Linsey C. Marr
1145 Perry St. (0246), Durham 411, Blacksburg, VA 24061
(540) 231-6071, lmarr@vt.edu, http://www.air.cee.vt.edu
EDUCATION
Ph.D. University of California at Berkeley, Civil and Environmental Engineering, 2002
Changes in ozone sensitivity to precursor emissions on multiple time scales
Minor areas of study: Mathematics, Public Health
B.S.
Harvard, Engineering Science, Summa cum laude, 1996
ACADEMIC APPOINTMENTS
2018 – present
2013 – present
2008 – 2013
2003 – 2008
Charles P. Lunsford Professor
Professor
Associate Professor
Assistant Professor
Civil and Environmental Engineering
Virginia Tech
2002 – 2003
Postdoctoral Associate
Earth, Atmospheric, and Planetary Sciences
Massachusetts Institute of Technology
AWARDS AND HONORS
• Virginia Tech Ut Prosim Scholar Award, highest honor for faculty, March 2021
• Appointee, National Academies of Sciences, Engineering, and Medicine’s Board on
Environmental Studies and Toxicology, 2020-2022
• Excellence in Teaching Award, Virginia Tech Center for Excellence in Teaching and
Learning, 2019
• Outstanding Reviewer for Environmental Science: Processes and Impacts, 2019
• Fellow of the International Society of Indoor Air Quality and Climate, 2018
• Fulbright Scholar to Taiwan, 2017-2018
• Outstanding Reviewer Award, Aerosol Science and Technology, 2017
• US Environmental Protection Agency Level III Scientific and Technological Achievement
Award, 2016
• Virginia Tech Innovator Award, 2014
• Virginia Tech Dean’s Award for Excellence in Research, 2014
• National Institutes of Health Director’s New Innovator Award, 2013
This is a $2.3 million grant to support exceptionally creative new investigators who propose highly
innovative projects that have the potential for unusually high impact. There were 41 such awards
across all areas of biomedical research in 2013.
• Virginia Tech Civil Engineering Alumni Teaching Excellence Award, 2010
• Virginia Tech College of Engineering Faculty Fellow, 2007
• National Science Foundation CAREER Award, 2006
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Virginia Tech College of Engineering Outstanding New Assistant Professor, 2006
US Environmental Protection Agency STAR Graduate Research Fellowship, 1999-2002
National Science Foundation Graduate Research Fellowship, 1996-1999
Outstanding Graduate Student Instructor, University of California at Berkeley, 1999
Harvard Phi Beta Kappa, 1996
TEACHING EXPERIENCE
I have taught courses at the undergraduate and graduate level in air quality engineering and
an introductory course in environmental engineering. I strive to be an excellent teacher. My
teaching ratings have averaged 5.4 out of 6.0, and I have received a teaching award that is
based on feedback from recent graduates.
Professor, Virginia Tech, Blacksburg
CEE 2804: Introduction to Civil and Environmental Engineering
CEE 3104: Introduction to Environmental Engineering
CEE 4144: Air Resources Engineering
CEE 5154: Air Pollution Transport and Chemistry
CEE 5794: Principles of Environmental Engineering
Teaching Assistant, University of California at Berkeley
CE 218A: Air Quality Engineering, 1998
Head Teaching Fellow or Teaching Fellow, Harvard
CS 50: Computer Programming, 1995
ES 96: Engineering Design Project, 1996
ES 123: Fluid Mechanics, 1995
PUBLICATIONS
Journal articles (Cited >8800 times, h-index of 49 according to Google Scholar)
1.
Pan, J., Tang, J., Caniza, M., Heraud, J.-M., Koay, E., Lee, H.K., Lee, C.K., Li, Y., Nava Ruiz,
A., Santillan-Salas, C.F., Marr, L.C. (2021). Correlating indoor and outdoor temperature and
humidity in a sample of buildings in tropical climates, Indoor Air, doi:10.1111/ina.12876.
2.
Tang, J.W., Marr, L.C., Milton, D.K. (2021). Aerosols should not be defined by distance
travelled, Journal of Hospital Infection, doi:10.1016/j.jhin.2021.05.007.
3.
Morawska, L., Allen, J., Bahnfleth, W., Bluyssen, P.M., Boerstra, A., Buonanno, G., Cao, J.,
Dancer, S.J., Floto, A., Franchimon, F., Greenhalgh, T., Haworth, C., Hogeling, J., Isaxon, C.,
Jimenez, J.L., Kurnitski, J., Li, Y., Loomans, M., Marks, G., Marr, L.C., Mazzarella, L.,
Melikov, A.K., Miller, S., Milton, D.K., Nazaroff, W., Nielsen, P.V., Noakes, C., Peccia, J.,
Prather, K., Querol, X., Sekhar, C., Seppänen, O., Tanabe, S.-i., Tang, J.W., Tellier, R., Tham,
K.W., Wargocki, P., Wierzbicka, A., Yao, M. (2021). A paradigm shift to combat indoor
respiratory infection, Science, 372, 689-691, doi:10.1126/science.abg2025.
4.
Tong, Y., Pan, J., Kucukdeger, E., Johnson, A.L., Marr, L.C., Johnson, B.N. (2021). 3D
printed mask frames improve the inward protection efficiency of a cloth mask, ACS ES&T
Engineering, 1, 1000-1008, doi:10.1021/acsestengg.1c00028.
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5.
Morris, D.H., Yinda, K.C., Gamble, A., Rossine, F.W., Huang, Q., Bushmaker, T., Fischer,
R.J., Matson, M.J., Van Doremalen, N., Vikesland, P.J., Marr, L.C., Munster, V.J., LloydSmith, J.O. (2021). Mechanistic theory predicts the effects of temperature and humidity on
inactivation of SARS-CoV-2 and other enveloped viruses, eLife, 10, e65902,
doi:10.7554/eLife.65902.
6.
Pan, J., Harb, C., Leng, W., Marr, L.C. (2021). Inward and outward effectiveness of cloth
masks, a surgical mask, and a face shield, Aerosol Science and Technology, 55, 718-733,
doi:10.1080/02786826.2021.1890687.
7.
Tang, J.W., Marr, L.C., Li, Y., Dancer, S.J. (2021). Covid-19 has redefined airborne
transmission, BMJ, 373, n913, doi:10.1136/bmj.n913.
8.
Harb, C., Pan, J., DeVilbiss, S., Badgley, B., Marr, L.C., Schmale, D.G., Foroutan, H. (2021).
Increasing freshwater salinity impacts aerosolized bacteria, Environmental Science and
Technology, doi:10.1021/acs.est.0c08558.
9.
Baffoe-Bonnie, A.W., Zhang, K.S., Pan, J., Simpkins, K., Marr, L.C. (2021). Filtration
evaluation of expired elastomeric P-100 filter cartridges after months of real-world use
during the coronavirus disease 2019 (COVID-19) pandemic, Infection Control & Hospital
Epidemiology, 1-2, doi:10.1017/ice.2021.104.
10. Patolia, H.H., Pan, J., Harb, C., Marr, L.C., Baffoe-Bonnie, A.W. (2021). Filtration evaluation
and clinical use of expired elastomeric P-100 filter cartridges during the COVID-19
pandemic, Infection Control & Hospital Epidemiology, 42, 367-369, doi:10.1017/ice.2020.257.
11. Miller, S.L., Nazaroff, W.W., Jimenez, J.L., Boerstra, A., Buonanno, G., Dancer, S.J.,
Kurnitski, J., Marr, L.C., Morawska, L., Noakes, C. (2021). Transmission of SARS-CoV-2 by
inhalation of respiratory aerosol in the Skagit Valley Chorale superspreading event, Indoor
Air, 31, 314-323, doi:10.1111/ina.12751.
12. Garner, E., Davis, B.C., Milligan, E., Blair, M.F., Keenum, I., Maile-Moskowitz, A., Pan, J.,
Gnegy, M., Liguori, K., Gupta, S., Prussin Ii, A.J., Marr, L.C., Heath, L.S., Vikesland, P.J.,
Zhang, L., Pruden, A. (2021). Next generation sequencing approaches to evaluate water
and wastewater quality, Water Research, 116907, doi:10.1016/j.watres.2021.116907.
13. Bezek, L.B., Pan, J., Harb, C., Zawaski, C.E., Molla, B., Kubalak, J.R., Marr, L.C., Williams,
C.B. (2021). Additively manufactured respirators: quantifying particle transmission and
identifying system-level challenges for improving filtration efficiency, Journal of
Manufacturing Systems, doi:10.1016/j.jmsy.2021.01.002.
14. Gandhi, M., Marr, L.C. (2021). Uniting infectious disease and physical science principles on
the importance of face masks for COVID-19, Med, 2, 29-32, doi: 10.1016/j.medj.2020.12.008.
15. Samet, J.M., Prather, K., Benjamin, G., Lakdawala, S., Lowe, J.-M., Reingold, A., Volckens,
J., Marr, L. (2021). Airborne transmission of SARS-CoV-2: what we know, Clinical Infectious
Diseases, doi:10.1093/cid/ciab039.
16. Tang, J.W., Bahnfleth, W.P., Bluyssen, P.M., Buonanno, G., Jimenez, J.L., Kurnitski, J., Li, Y.,
Miller, S., Sekhar, C., Morawska, L., Marr, L.C., Melikov, A.K., Nazaroff, W.W., Nielsen,
P.V., Tellier, R., Wargocki, P., Dancer, S.J. (2021). Dismantling myths on the airborne
transmission of severe acute respiratory syndrome coronavirus (SARS-CoV-2), Journal of
Hospital Infection, doi:10.1016/j.jhin.2020.12.022.
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17. Huang, Q., Wei, H., Marr, L.C., Vikesland, P.J. (2021). Direct quantification of the effect of
ammonium on aerosol droplet pH, Environmental Science and Technology, 55, 778-787,
doi:10.1021/acs.est.0c07394.
18. Jatta, M., Kiefer, C., Patolia, H., Pan, J., Harb, C., Marr, L.C., Baffoe-Bonnie, A. (2021). N95
reprocessing by low temperature sterilization with 59% vaporized hydrogen peroxide
during the 2020 COVID-19 pandemic, American Journal of Infection Control, 49, 8-14,
doi:10.1016/j.ajic.2020.06.194.
19. Lin, K., Schulte, C.R., Marr, L.C. (2020). Survival of MS2 and Φ6 viruses in droplets as a
function of relative humidity, pH, and salt, protein, and surfactant concentrations, PLoS
One, 15, e0243505, doi:10.1371/journal.pone.0243505.
20. Prather, K.A., Marr, L.C., Schooley, R.T., McDiarmid, M.A., Wilson, M.E., Milton, D.K.
(2020). Airborne transmission of SARS-CoV-2, Science, eabf0521,
doi:10.1126/science.abf0521.
21. Allen, J.G., Marr, L.C. (2020). Recognizing and controlling airborne transmission of SARS‐
CoV‐2 in indoor environments, Indoor Air, 30, 557-558, doi:10.1111/ina.12697.
22. Morawska, L., Tang, J.W., Bahnfleth, W., Bluyssen, P.M., Boerstra, A., Buonanno, G., Cao,
J., Dancer, S., Floto, A., Franchimon, F., Haworth, C., Hogeling, J., Isaxon, C., Jimenez, J.L.,
Kurnitski, J., Li, Y., Loomans, M., Marks, G., Marr, L.C., Mazzarella, L., Melikov, A.K.,
Miller, S., Milton, D.K., Nazaroff, W., Nielsen, P.V., Noakes, C., Peccia, J., Querol, X.,
Sekhar, C., Seppänen, O., Tanabe, S.-I., Tellier, R., Tham, K.W., Wargocki, P., Wierzbicka,
A., Yao, M. (2020). How can airborne transmission of COVID-19 indoors be minimised?,
Environment International, 142, 105832, doi:10.1016/j.envint.2020.105832.
23. Blocken, B., van Druenen, T., van Hooff, T., Verstappen, P.A., Marchal, T., Marr, L.C.
(2020). Can indoor sports centers be allowed to re-open during the COVID-19 pandemic
based on a certificate of equivalence?, Building and Environment, 180, 107022,
doi:10.1016/j.buildenv.2020.107022.
24. Dancer, S.J., Tang, J.W., Marr, L.C., Miller, S., Morawska, L., Jimenez, J.L. (2020). Putting a
balance on the aerosolization debate around SARS-CoV-2, Journal of Hospital Infection, 105,
569-570, doi:10.1016/j.jhin.2020.05.014.
25. Prussin II, A.J., Belser, J.A., Bischoff, W., Kelley, S.T., Lin, K., Lindsley, W.G.,
Nshimyimana, J.P., Schuit, M., Wu, Z., Bibby, K., Marr, L.C. (2020). Viruses in the Built
Environment (VIBE) meeting report, Microbiome, 8, 1, doi:10.1186/s40168-019-0777-4.
26. Satterwhite, E., Bell, S.E., Marr, L.C., Thompson, C.K., Prussin II, A.J., Buttling, L., Pan, J.,
Gohlke, J.M. (2020). Building interdisciplinary partnerships for community-engaged
environmental health research in Appalachian Virginia, International Journal of
Environmental Research and Public Health, 17, 1695, doi:10.3390/ijerph17051695.
27. Lin, K., Marr, L.C. (2020). Humidity-dependent decay of viruses, but not bacteria, in
aerosols and droplets follows disinfection kinetics, Environmental Science and Technology, 54,
1024-1032, doi:10.1021/acs.est.9b04959.
28. Alsved, M., Bourouiba, L., Duchaine, C., Löndahl, J., Marr, L.C., Parker, S.T., Prussin II,
A.J., Thomas, R.J. (2020). Natural sources and experimental generation of bioaerosols:
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challenges and perspectives, Aerosol Science and Technology, 54, 547-571,
doi:10.1080/02786826.2019.1682509.
29. Bakker, A., Siegel, J.A., Mendell, M.J., Prussin II, A.J., Marr, L.C., Peccia, J. (2020). Bacterial
and fungal ecology on air conditioning cooling coils is influenced by climate and building
factors, Indoor Air, 30, 326-334, doi:10.1111/ina.12632.
30. Guo, H., Huang, Q., Leng, W., Zhan, Y., Behkam, B., Willner, M.R., Wei, H., Marr, L.C.,
Vikesland, P.J. (2019). Bromide ion-functionalized nanoprobes for sensitive and reliable pH
measurement by surface-enhanced Raman spectroscopy, Analyst, 144, 7326-7335,
doi:10.1039/C9AN01699F.
31. Kormuth, K.A., Lin, K., Qian, Z., Myerburg, M.M., Marr, L.C., Lakdawala, S.S. (2019).
Environmental persistence of influenza viruses is dependent upon virus type and host
origin, mSphere, 4, e00552-00519, doi:10.1128/mSphere.00552-19.
32. Yao, W., Gallagher, D.L., Marr, L.C., Dietrich, A.M. (2019). Emission of iron and aluminum
oxide particles from ultrasonic humidifiers and potential for inhalation, Water Research, 164,
114899, doi:10.1016/j.watres.2019.114899.
33. Manuja, A., Ritchie, J., Buch, K., Wu, Y., Eichler, C.M.A., Little, J.C., Marr, L.C. (2019). Total
surface area in indoor environments, Environmental Science: Processes and Impacts, 21, 13841392, doi:10.1039/C9EM00157C.
34. Edwards, R., et al. (2019). Global phylogeography and ancient evolution of the widespread
human gut virus crAssphage, Nature Microbiology, 4, 1727-1736, doi:10.1101/527796.
35. Garcia, E.B., Hanlon, R., Makris, M.R., Powers, C.W., Jimenez-Sanchez, C., Karatum, O.,
Marr, L.C., Sands, D.C., Schmale III, D.G. (2019). Microbial diversity of individual
raindrops collected from simulated and natural precipitation events, Atmospheric
Environment, 209, 102-111, doi:10.1016/j.atmosenv.2019.04.023.
36. Garcia, E.B., Alms, C., Hinman, A.W., Kelly, C., Smith, A., Vance, M., Loncarek, J., Marr,
L.C., Cimini, D. (2019). Single-cell analysis reveals that chronic silver nanoparticle exposure
induces cell division defects in human epithelial cells, International Journal of Environmental
Research and Public Health, 16, 2061, doi:10.3390/ijerph16112061.
37. Hochella, M.F., Mogk, D.W., Ranville, J., Allen, I.C., Luther, G.W., Marr, L.C., McGrail,
B.P., Murayama, M., Qafoku, N.P., Rosso, K.M., Sahai, N., Schroeder, P.A., Vikesland, P.,
Westerhoff, P., Yang, Y. (2019). Natural, incidental, and engineered nanomaterials and their
impacts on the Earth system, Science, 363, eaau8299, doi:10.1126/science.aau8299.
38. Prussin II, A.J., Torres, P.J., Shimashita, J., Head, S.R., Bibby, K.J., Kelley, S.T., Marr, L.C.
(2019). Seasonal dynamics of DNA and RNA viral bioaerosol communities in a daycare
center, Microbiome, 7, 53, doi:10.1186/s40168-019-0672-z.
39. Marr, L.C., Tang, J.W., Mullekom, J.V., Lakdawala, S.S. (2019). Mechanistic insights into the
effect of humidity on airborne influenza virus survival, transmission and incidence, Journal
of The Royal Society Interface, 16, 20180298, doi: 10.1098/rsif.2018.0298.
40. Milazzo, M.J., Gohlke, J.M., Gallagher, D.L., Scott, A.A., Zaitchik, B.F., Marr, L.C. (2019).
Potential for city parks to reduce exposure to BTEX in air, Environmental Science: Processes
and Impacts, 21, 40-50, doi:10.1039/C8EM00252E.
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41. Kormuth, K.A., Lin, K., Prussin II, A.J., Vejerano, E.P., Tiwari, A.J., Cox, S.C., Myerburg,
M.M., Lakdawala, S.S., Marr, L.C. (2018). Influenza virus infectivity is retained in aerosols
and droplets independent of relative humidity, Journal of Infectious Diseases, 218, 739-747,
doi:10.1093/infdis/jiy221.
42. Wei, H., Vejerano, E.P., Leng, W., Huang, Q., Willner, M.R., Marr, L.C., Vikesland, P.J.
(2018). Aerosol droplets exhibit a stable pH gradient, Proceedings of the National Academy of
Sciences, 115, 7272-7277, doi:10.1073/pnas.1720488115.
43. Powers, C., Hanlon, R., Grothe, H., Prussin II, A.J., Marr, L., Schmale III, D.G. (2018).
Coordinated sampling of microorganisms over freshwater and saltwater environments
using an unmanned surface vehicle (USV) and a small unmanned aircraft system (sUAS),
Frontiers in Microbiology, 9, 1668.
44. Prussin II, A. J., Schwake, D.O., Lin, K., Gallagher, D.L., Buttling, L., Marr, L.C. (2018).
Survival of the enveloped virus phi6 in droplets as a function of relative humidity, absolute
humidity, and temperature, Applied and Environmental Microbiology, 84, e00551-18, doi:
10.1128/AEM.00551-18.
45. Vejerano, E.P., Marr, L.C. (2018). Physico-chemical characteristics of evaporating
respiratory fluid droplets, Journal of The Royal Society Interface, 15, 20170939,
doi:10.1098/rsif.2017.0939.
46. Wei, H., Leng, W., Song, J., Willner, M.R., Marr, L.C., Zhou, W., Vikesland, P.J. (2018).
Improved quantitative SERS enabled by surface plasmon enhanced elastic light scattering,
Analytical Chemistry, 90, 3227-3237, doi:10.1021/acs.analchem.7b04667.
47. Wu, Y., Eichler, C.M.A., Cao, J., Benning, J., Olson, A., Chen, S., Liu, C., Vejerano, E.P.,
Marr, L.C., Little, J.C. (2018). Particle/gas partitioning of phthalates to organic and
inorganic airborne particles in the indoor environment, Environmental Science and
Technology, 52, 3583-3590, doi:10.1021/acs.est.7b05982.
48. Graham, K.E., Prussin II, A.J., Marr, L.C., Sassoubre, L.M., Boehm, A.B. (2018). Microbial
community structure of sea spray aerosols at three California beaches, FEMS Microbiology
Ecology, 94, fiy005, doi:10.1093/femsec/fiy005.
49. Sain, A.E., Zook, J., Davy, B.M., Marr, L.C., Dietrich, A.M. (2018). Size and mineral
composition of airborne particles generated by an ultrasonic humidifier, Indoor Air, 28, 8088.
50. Krometis, L., Gohlke, J., Kolivras, K., Satterwhite, E., Marmagas, S.W., Marr, L.C. (2017).
Environmental health disparities in the Central Appalachian region of the United States,
Reviews on Environmental Health, 32, 253-266, doi:10.1515/reveh-2017-0012.
51. Prussin II, A.J., Schwake, D.O., Marr, L.C. (2017). Ten questions concerning the
aerosolization and transmission of Legionella in the built environment, Building and
Environment, 123, 684-695, doi:10.1016/j.buildenv.2017.06.024.
52. Vance, M.E., Pegues, V., Van Montfrans, S., Leng, W., Marr, L.C. (2017). Aerosol emissions
from fuse-deposition modeling 3D printers in a chamber and in real indoor environments,
Environmental Science and Technology, 51, 9516-9523, doi:10.1021/acs.est.7b01546.
53. Dai, D., Prussin II, A.J., Marr, L.C., Vikesland, P.J., Edwards, M.A., Pruden, A. (2017).
Factors shaping the human exposome in the built environment: opportunities for
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engineering control, Environmental Science and Technology, 51, 7759-7774,
doi:10.1021/acs.est.7b01097.
54. Lin, K., Marr, L.C. (2017). Aerosolization of Ebola virus surrogates in wastewater systems,
Environmental Science and Technology, 51, 2669–2675, doi:10.1021/acs.est.6b04846.
55. Dale, J.G., Cox, S.S., Vance, M.E., Marr, L.C., Hochella, M.F. (2017). Transformation of
cerium oxide nanoparticles from a diesel fuel additive during combustion in a diesel
engine, Environmental Science and Technology, 51, 1973–1980.
56. Wu, Y., Eichler, C.M.A., Leng, W., Cox, S.S., Marr, L.C., Little, J.C. (2017). Adsorption of
phthalates on impervious indoor surfaces, Environmental Science and Technology, 51, 2907–
2913.
57. David, R.F., Reinisch, M., Trail, F., Marr, L.C., Schmale III, D.G. (2016). Compression tests
of Fusarium graminearum ascocarps provide insights into the strength of the perithecial wall
and the quantity of ascospores, Fungal Genetics and Biology, 96, 25-32.
58. Wang, D., Wang, Z., Lee, A., Marr, L.C., Heflin, J.R., Xu, Y. (2016). Highly sensitive nanoaerosol detection based on the whispering-gallery-mode in cylindrical optical fiber
resonators, Aerosol Science and Technology, 50, 1366-1374.
59. Adams, R.I., Bhangar, S., Dannemiller, K.C., Eisen, J.A., Fierer, N., Gilbert, J.A., Green, J.L.,
Marr, L.C., Miller, S.L., Siegel, J.A., Stephens, B., Waring, M.S., Bibby, K. (2016). Ten
questions concerning the microbiomes of buildings, Building and Environment, 109, 224-234.
60. Wei, H., Willner, M., Marr, L., Vikesland, P. (2016). Highly stable SERS pH nanoprobes
produced by co-solvent controlled AuNP aggregation, Analyst, 141, 5159-5169.
61. David, R.F., Marr, L.C., Schmale III, D.G. (2016). Ascospore release and discharge distances
of Fusarium graminearum under controlled temperature and relative humidity, European
Journal of Plant Pathology, 146, 59-69.
62. Wu, Y., Cox, S.S., Xie, M., Marr, L.C., Little, J.C. (2016). A simple method to measure the
gas-phase SVOC concentration in equilibrium with a material phase, Indoor Air, 26, 903-912.
63. Titcombe Lee, M., Pruden, A., Marr, L.C. (2016). Partitioning of viruses in wastewater
systems and potential for aerosolization, Environmental Science and Technology Letters, 3, 210215.
64. Prussin II, A.J., Vikram, A., Bibby, K.J., Marr, L.C. (2016). Seasonal dynamics of the
airborne bacterial community and selected viruses in a children's daycare center, PLoS
ONE, 11, e0151004.
65. David, R.F., BozorgMagham, A.E., Schmale III, D.G., Ross, S.D., Marr, L.C. (2016).
Identification of meteorological predictors of Fusarium graminearum ascospore release
using correlation and causality analyses, European Journal of Plant Pathology, 145, 483-492.
66. Tiwari, A.J., Ashraf-Khorassani, M., Marr, L.C. (2016). C60 fullerenes from combustion of
common fuels, Science of the Total Environment, 547, 254-60,
doi:10.1016/j.scitotenv.2015.12.142.
67. Xie, M., Wu, Y., Little, J.C., Marr, L.C. (2016). Phthalates and alternative plasticizers and
potential for contact exposure from children’s backpacks and toys, Journal of Exposure
Analysis and Environmental Epidemiology, 26, 119-24.
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68. Prussin II, A.J., Marr, L.C. (2015). Sources of airborne microorganisms in the built
environment, Microbiome, 3, Art. no. 78.
69. Khare, P., Marr, L.C. (2015). Simulation of vertical concentration gradient of influenza
viruses in dust resuspended by walking, Indoor Air, 25, 428-440, doi:10.1111/ina.12156.
70. Onasch, T.B., Fortner, E.C., Trimborn, A.M., Lambe, A.T., Tiwari, A.J., Marr, L.C., Corbin,
J.C., Mensah, A.A., Williams, L.R., Davidovits, P., Worsnop, D.R. (2015). Investigations of
SP-AMS carbon ion distributions as a function of refractory black carbon particle types,
Aerosol Science and Technology, 49, 409-422.
71. Prussin II, A.J., Garcia, E.B., Marr, L.C. (2015). Total concentrations of virus and bacteria in
indoor and outdoor air, Environmental Science and Technology Letters, 2, 84-88.
72. Tulve, N.S., Stefaniak, A.B., Quadros, M.E., Rogers, K., Mwilu, S., LeBouf, R.F., SchweglerBerry, D., Willis, R., Thomas, T.A., Marr, L.C. (2015). Characterization of silver
nanoparticles in selected consumer products and its relevance for predicting children's
potential exposures, International Journal of Hygiene and Environmental Health, 218, 345-357.
73. Garg, A., Akbar, M., Vejerano, E., Narayanan, S., Nazhandali, L., Marr, L.C., Agah, M.
(2015). Zebra GC: A mini gas chromatography system for trace-level determination of
hazardous air pollutants, Sensors and Actuators B: Chemical, 212, 145-154.
74. Hong, A., Schweitzer, L., Yang, W., Marr, L.C. (2015). The impact of temporary freeway
closure on regional air quality: A lesson from Carmageddon in Los Angeles, United States,
Environmental Science and Technology, 5, 3211-3218, doi:10.1021/es505185c.
75. Vance, M.E., Marr, L.C. (2015). Exposure to airborne engineered nanoparticles in the indoor
environment, Atmospheric Environment, 106, 503-509.
76. Vejerano, E., Ma, Y., Holder, A., Pruden, A., Subbiah, E., Marr, L. (2015). Toxicity of
particulate matter from incineration of nanowaste, Environmental Science: Nano, 2, 143-154
doi:10.1039/C4EN00182F.
77. Pietsch, R.B., David, R.F., Marr, L.C., Vinatzer, B., Schmale III, D.G. (2015). Aerosolization
of two strains (Ice+ and Ice-) of Pseudomonas syringae in a Collison nebulizer at different
temperatures, Aerosol Science and Technology, 49, 159-166.
78. Heidari, B., Marr, L.C. (2015). Real-time emissions from construction equipment compared
with model predictions, Journal of the Air and Waste Management Association, 65, 115-125,
doi:10.1080/10962247.2014.978485.
79. Prussin II, A.J., Marr, L.C., Schmale III, D.G., Stoll, R., Ross, S.D. (2015). Experimental
validation of a long-distance transport model for plant pathogens: Application to Fusarium
graminearum, Agricultural and Forest Meteorology, 203, 118-130.
80. Ma, Y., Metch, J.W., Vejerano, E.P., Miller, I.J., Leon, E.C., Marr, L.C., Vikesland, P.J.,
Pruden, A. (2015). Microbial community response of nitrifying sequencing batch reactors to
silver, zero-valent iron, titanium dioxide and cerium dioxide nanomaterials, Water Research,
68, 87-97.
81. Ma, Y., Elankumaran, S., Marr, L.C., Vejerano, E.P., Pruden, A. (2014). Toxicity of
engineered nanomaterials and their transformation products following wastewater
treatment on A549 human lung epithelial cells, Toxicology Reports, 1, 871-876.
8 of 23
82. Prussin II, A.J., Marr, L.C., Bibby, K.J. (2014). Challenges of studying viral aerosol
metagenomics and communities in comparison with bacterial and fungal aerosols, FEMS
Microbiology Letters, 357(1), 1–9.
83. Tiwari, A.J., Morris, J.R., Vejerano, E.P., Hochella Jr., M.F., Marr, L.C. (2014). Oxidation of
C60 aerosols by atmospherically relevant levels of O3, Environmental Science and Technology,
48(5), 2706-2714.
84. Vejerano, E.P., Leon, E.C., Holder, A.L., Marr, L.C. (2014). Characterization of particle
emissions and fate of nanomaterials during incineration, Environmental Science: Nano, 1(2),
133-143 (JOURNAL COVER).
85. Takahama, S., Russell, L.M., Shores, C.A., Marr, L.C., Zheng, J., Levy, M., Zhang, R.,
Castillo, E., Rodriguez-Ventura, J.G., Quintana, P.J.E., Subramanian, R., Zavala, M., Molina,
L.T. (2014). Diesel vehicle and urban burning contributions to black carbon concentrations
and size distributions in Tijuana, Mexico, during the Cal-Mex 2010 campaign, Atmospheric
Environment, 88, 341-352.
86. Tiwari, A.J., Fields, C.G., Marr, L.C. (2013). A cost-effective method of aerosolizing dry
powdered nanoparticles, Aerosol Science and Technology, 47(11), 1267-1275.
87. Holder, A.L., Vejerano, E.P., Zhou, X., Marr, L.C. (2013). Nanomaterial disposal by
incineration, Environmental Science: Processes and Impacts, 15(9), 1652-1664.
88. Quadros, M.E., Pierson IV, R., Tulve, N.S., Willis, R., Rogers, K., Thomas, T.A., Marr, L.C.
(2013). Release of silver from nanotechnology-based consumer products for children,
Environmental Science and Technology, 47(15), 8894-8901.
89. Vejerano, E.P., Holder, A.L., Marr, L.C. (2013). Emissions of polycyclic aromatic
hydrocarbons, polychlorinated dibenzo-p-dioxins, and dibenzofurans from incineration of
nanomaterials, Environmental Science and Technology, 47(9), 4866-4874.
90. Benning, J.L., Liu, Z., Tiwari, A., Little, J.C., Marr, L.C. (2013). Characterizing gas-particle
interactions of phthalate plasticizer emitted from vinyl flooring, Environmental Science and
Technology, 47(6), 2696-2703.
91. Marr, L.C., Moore, T.O., Klapmeyer, M.E., Killar, M.B. (2013). Comparison of NOx fluxes
measured by eddy covariance to emission inventories and land use, Environmental Science
and Technology, 47(4), 1800-1808.
92. Shores, C.A., Klapmeyer, M.E., Quadros, M.E., Marr, L.C. (2013). Sources and transport of
black carbon at the California-Mexico border, Atmospheric Environment, 70, 490-499.
93. Holder, A.L., Marr, L.C. (2013). Toxicity of silver nanoparticles at the air-liquid interface,
BioMed Research International, 2013, Article ID 328934.
94. Klapmeyer, M.E., Marr, L.C. (2012). CO2, NOx, and particle emissions from aircraft and
support activities at a regional airport, Environmental Science and Technology, 46, 1097410981.
95. Yang, W., Elankumaran, S., Marr, L.C. (2012). Relationship between humidity and
influenza A viability in droplets and implications for influenza's seasonality, PLoS ONE,
7(10), e46789.
9 of 23
96. Yang, W., Marr, L.C. (2012). Mechanisms by which ambient humidity may affect viruses in
aerosols, Applied and Environmental Microbiology, 78, 6781-6788.
97. Quadros, M.E., Marr, L.C. (2011). Silver nanoparticles and total aerosols emitted by
nanotechnology-related consumer spray products, Environmental Science and Technology, 45,
10713-10719.
98. Yang, W., Marr, L.C. (2011). Dynamics of airborne influenza A viruses indoors and
dependence on humidity, PLoS ONE, 6(6), e21481.
99. Yang, W., Subbiah, E., Marr, L.C. (2011). Concentrations and size distributions of airborne
influenza A viruses measured indoors at a health centre, a daycare center, and on
aeroplanes, Journal of the Royal Society Interface, 8(61), 1176-1184, doi:10.1098/rsif.2010.0686.
100. Sparks, J.A., Ogejo, J.A., Cyriac, J., Hanigan, M.D., Knowlton, K.F., Gay, S.W., Marr, L.C.
(2011). The effects of dietary protein content and manure handling technique on ammonia
emissions during short-term storage of dairy cow manure, Transactions of the ASABE, 54,
675-683.
101. Quadros, M.E., Marr, L.C. (2010). Environmental and human health risks of aerosolized
silver nanoparticles, Journal of the Air and Waste Management Association, 60, 770-781.
102. Marr, L.C., Ely, M.R. (2010). The effect of air pollution on marathon running performance,
Medicine and Science in Sports and Exercise, 42, 585-591.
103. Tiwari, A.J., Marr, L.C. (2010). The role of atmospheric transformations in determining the
environmental impacts of carbonaceous nanoparticles, Journal of Environmental Quality, 39,
1883-1895.
104. Thornhill, D.A., Williams, A.E., Onasch, T.B., Wood, E., Herndon, S.C., Kolb, C.E.,
Knighton, W.B., Zavala, M., Molina, L.T., Marr, L.C. (2010). Application of positive matrix
factorization to on-road measurements for source apportionment of diesel- and gasolinepowered vehicle emissions in Mexico City, Atmospheric Chemistry and Physics, 10, 3629-3644.
105. Cross, E.S., Onasch, T.B., Ahern, A., Wrobel, W., Slowik, J.G., Olfert, J., Lack, D.A., Massoli,
P., Cappa, C.D., Schwarz, J.P., Spackman, J.R., Fahey, D.W., Sedlacek, A., Trimborn, A.,
Jayne, J.T., Freedman, A., Willaims, L.R., Ng, N.L., Mazzoleni, C., Dubey, M., Brem, B.,
Kok, G., Subramanian, R., Freitag, S., Clarke, A., Thornhill, D., Marr, L.C., Kolb, C.E.,
Worsnop, D.R., Davidovits, P. (2010). Soot particle studies - instrument inter-comparison project overview, Aerosol Science and Technology, 44, 592-611.
106. Zavala, M., Herndon, S.C., Wood, E.C., Onasch, T.B., Knighton, W.B., Marr, L.C., Kolb,
C.E., Molina, L. T. (2009). Evaluation of mobile emissions contributions to Mexico City’s
emissions inventory using on-road and cross-road emission measurements and ambient
data, Atmospheric Chemistry and Physics, 9, 6305-6317.
107. Moore, T.O., Doughty, D.C., Marr, L.C. (2009). Demonstration of a mobile Flux Laboratory
for the Atmospheric Measurement of Emissions (FLAME) to assess emissions inventories,
Journal of Environmental Monitoring, 11, 259-268, JOURNAL COVER.
108. Li, L.F., Cyriac, J., Knowlton, K.F., Marr, L.C., Gay, S.W., Hanigan, M.D., Ogejo, J.A. (2009).
Effects of reducing dietary nitrogen on ammonia emissions from manure on the floor of a
naturally ventilated free stall dairy barn at low (0-20 degrees C) temperatures, Journal of
Environmental Quality, 38, 2172-2181.
10 of 23
109. Schweitzer, L.A., Marr, L.C., Linford, J.C., Darby, M.A. (2008). The Sustainable Mobility
Learning Laboratory: Interactive web-based education on transportation and the
environment, Applied Environmental Education and Communication, 7, 20-29.
110. Thornhill, D.A., de Foy, B., Herndon, S.C., Onasch, T.B., Wood, E.C., Zavala, M., Molina,
L.T., Gaffney, J.S., Marley, N.A., Marr, L.C. (2008). Particulate polycyclic aromatic
hydrocarbon spatial variability and aging in Mexico City, Atmospheric Chemistry and
Physics, 8, 3093-3105.
111. Yeganeh, B., Kull, C.M., Hull, M.A., Marr, L.C. (2008). Characterization of airborne
particles during production of carbonaceous nanomaterials, Environmental Science and
Technology, 42, 4600-4606.
112. Andersen, R.G., Booth, E.C., Marr, L.C., Widdowson, M.A., Novak, J.T. (2008).
Volatilization and biodegradation of naphthalene in the vadose zone impacted by
phytoremediation, Environmental Science and Technology, 42, 2575-2581.
113. Sheesley, R.J., Schauer, J.J., Smith, T.J., Garshick, E., Laden, F., Marr, L.C., Molina, L.T.
(2008). Assessment of diesel particulate matter exposure in the workplace: freight
terminals, Journal of Environmental Monitoring, 10, 305-314.
114. Dzepina, K., Arey, J., Marr, L.C., Worsnop, D.R., Salcedo, D., Zhang, Q., Onasch, T.B.,
Molina, L.T., Molina, M.J., Jimenez, J.L. (2007). Detection of particle-phase polycyclic
aromatic hydrocarbons in Mexico City using an Aerosol Mass Spectrometer, International
Journal of Mass Spectrometry, 263, 152-170.
115. Marr, L.C., Booth, E.C., Andersen, R.G., Widdowson, M.A., Novak, J.T. (2006). Direct
volatilization of naphthalene to the atmosphere at a phytoremediation site, Environmental
Science and Technology, 40, 5560-5566.
116. Marr, L.C., Dzepina, K., Jimenez, J.L., Reisen, F., Bethel, H.L., Arey, J., Gaffney, J.S., Marley,
N.A., Molina, L.T., Molina, M.J. (2006). Sources and transformations of particle-bound
polycyclic aromatic hydrocarbons in Mexico City, Atmospheric Chemistry and Physics, 6,
1733-1745.
117. Zavala, M., Herndon, S.C., Slott, R.S., Dunlea, E.J., Marr, L.C., Shorter, J.H., Zahniser, M.,
Knighton, W.B., Rogers, T.M., Kolb, C.E., Molina, L.T., Molina, M.J. (2006). Characterization
of on-road vehicle emissions in the Mexico City Metropolitan Area using a mobile
laboratory in chase and fleet average measurement modes during the MCMA-2003 field
campaign, Atmospheric Chemistry and Physics, 6, 5129-5142.
118. Salcedo, D., Onasch, T.B., Dzepina, K., Canagaratna, M.R., Zhang, Q., Huffman, J.A.,
DeCarlo, P.F., Jayne, J.T., Mortimer, P., Worsnop, D.R., Kolb, C.E., Johnson, K.S., Zuberi, B.,
Marr, L.C., Volkamer, R., Molina, L.T., Molina, M.J., Cardenas, B., Bernabé, R.M., Márquez,
C., Gaffney, J.S., Marley, N.A., Laskin, A., Shutthanandan, V., Xie, Y., Brune, W., Lesher, R.,
Shirley, T., Jimenez, J.L. (2006). Characterization of ambient aerosols in Mexico City during
the MCMA-2003 campaign with Aerosol Mass Spectrometry: results from the CENICA
Supersite, Atmospheric Chemistry and Physics, 6, 925-946.
119. Jiang, M., Marr, L.C., Dunlea, E.J., Herndon, S.C., Jayne, J.T., Kolb, C.E., Knighton, W.B.,
Rogers, T.M., Zavala, M., Molina, L.T., Molina, M.J. (2005). Vehicle fleet emissions of black
carbon, polycyclic aromatic hydrocarbons, and other pollutants measured by a mobile
laboratory in Mexico City, Atmospheric Chemistry and Physics, 5, 3377-3387.
11 of 23
120. Herndon, S., Onasch, T., Frank, B., Marr, L., Jayne, J., Canagaratna, M., Lanni, T.,
Anderson, B., Worsnop, D., Miake-Lye, R. (2005). Particulate emissions from in-use
commercial aircraft, Aerosol Science and Technology, 39, 799–809.
121. Harley, R.A., Marr, L.C., Lehner, J.K., Giddings, S.N. (2005). Changes in motor vehicle
emissions on diurnal to decadal time scales and effects on atmospheric composition,
Environmental Science and Technology, 39, 5356-5362.
122. Marr, L.C., Grogan, L.A., Wohrnschimmel, H., Molina, L.T., Molina, M.J., Smith, T.J.,
Garshick, E. (2004). Vehicle traffic as a source of particulate polycyclic aromatic
hydrocarbon exposure in the Mexico City Metropolitan Area, Environmental Science and
Technology, 38, 2584-2592.
123. Marr, L.C., Harley, R.A. (2002). Modeling the effect of weekday-weekend differences in
motor vehicle emissions on photochemical air pollution in central California, Environmental
Science and Technology, 36, 4099-4106.
124. Marr, L.C., Harley, R.A. (2002). Spectral analysis of ambient ozone, nitrogen oxide, and
non-methane hydrocarbon time series in California, Atmospheric Environment, 36, 2327-2335.
125. Marr, L.C., Black, D.R., Harley, R.A. (2002). Formation of photochemical air pollution in
central California. 1. Development of a revised motor vehicle emission inventory, Journal of
Geophysical Research, 107, Art. no. 4047.
126. Marr, L.C., Noblet, G.S., Harley, R.A. (2002). Formation of photochemical air pollution in
central California. 2. Evaluation of an Eulerian model, Journal of Geophysical Research, 107,
Art. no. 4048.
127. Yi, C., Davis, K.J., Bakwin, P.S., Berger, B., Marr L.C. (2000). The influence of advection on
measurements of the net ecosystem-atmosphere exchange of CO2 from a very tall tower,
Journal of Geophysical Research, 105, 9991-9999.
128. Marr, L.C., Kirchstetter, T.W., Harley, R.A., Miguel, A.H., Hering, S.V., Hammond, S.K.
(1999). Characterization of polycyclic aromatic hydrocarbons in motor vehicle fuels and
exhaust emissions, Environmental Science and Technology, 33, 3091-3099.
129. Wills, Z., Marr, L., Zinn, K., Goodman, C.S., Van Vactor, D. (1999). Profilin and the Abl
tyrosine kinase are required for motor axon outgrowth in the Drosophila embryo, Neuron,
22, 291-299.
130. Marr, L.C., Morrison, G.C., Nazaroff, W.W., Harley, R.A. (1998). Reducing the risk of death
due to vehicle-related accidental carbon monoxide poisoning, Journal of the Air and Waste
Management Association, 48, 899-906.
131. Page, E., Siminovitch, M., Marr, L., Mitchell, J. (1998). Energy efficient alternatives to
halogen torchieres, Journal of the Illumination Engineering Society, 27, 28-32.
Book chapters
1. Pruitt, T. R., Hochella, M.F., Hull, M.S., Marr, L.C., Michel, F.M., Pruden, A., Vikesland, P.J.
(2018). NanoEarth (National Center for Earth and Environmental Nanotechnology
Infrastructure), Nanotechnology Environmental Health and Safety: Risks, Regulation, and
Management, 3rd edition, Eds: Hull, M.S., Bowman, D.M., Elsevier, Amsterdam.
12 of 23
2. Schweitzer, L., Marr, L. (2012). Environmental health and air quality, The Oxford Handbook of
Urban Planning, Oxford University Press, USA.
INVITED PRESENTATIONS AND SEMINARS
1. Humidity and Virus Survival in Droplets and Aerosols, Indoor Air and COVID
Transmission, Swiss Medical Weekly Expert Webinar, 10 May 2021.
2. The effect of humidity on the chemistry and biology of indoor air, Indoor Exposure to Fine
Particulate Matter and Practical Mitigation Approaches – Workshop on Sources of Indoor
Fine Particulate Matter, National Academies of Sciences, Engineering, and Medicine, 14
April 2021.
3. A paradigm shift in airborne transmission?, COVID-19: One Year Later, Keystone Symposia,
8 February 2021.
4. Transmission of viruses in droplets and aerosols, Department of Chemistry, University of
Toronto, 15 January 2021.
5. The role of aerosols in the transmission of COVID-19, Delta Dental Annual Lecture,
Virginia Tech Carilion School of Medicine, 6 January 2021.
6. What happens when you open your mouth?, COVID-19 and fostering informed decisions,
AEESP Webinar Series: Converging COVID-19, Environment, Health, and Equity,
Association of Environmental Engineering and Science Professors, 23 October 2020.
7. What does environmental engineering have to do with transmission of viruses?, Civil and
Environmental Engineering, University of California at Berkeley, 23 October 2020.
8. The role of aerosols in the transmission of COVID-19, Plenary speaker at American
Association for Aerosol Research Conference (online), 5-9 October 2020.
9. Transmission of SARS-CoV-2 by aerosols: challenges and knowledge gaps, Plenary speaker
at The Aerosol Society’s Covid-19 and Related Inhalational Infections - Focus Meeting 16, 30
September 2020.
10. Transmission of SARS-CoV-2 and other viruses in aerosols, National Oceanographic and
Atmospheric Administration, 23 September 2020.
11. Aerosols and transmission of respiratory viruses 101, Airborne Transmission of SARS-CoV2: A Virtual Workshop from the Environmental Health Matters Initiative, US National
Academies of Sciences, Engineering, and Medicine, 26 August 2020.
12. Sources and removal of SARS-CoV-2 in aerosols, CLEAN 2020 Summit, 13 August 2020.
13. SARS-CoV-2 in indoor air: principles and scenarios, Indoor Air Quality Science Webinar, US
Environmental Protection Agency, 16 July 2020.
14. SARS-CoV-2 in droplets and aerosols, Occupational Health Clinics for Ontario Workers, 7
July 2020.
15. Transmission of viruses in droplets and aerosols, Department of Environmental Science and
Engineering, Caltech, 6 May 2020.
13 of 23
16. Transmission of viruses in droplets and aerosols in the built environment, American Society
of Civil Engineers, Civil Engineering & the Coronavirus: Real World Applications - A
Coronavirus Series for Students Webinar Series: Spread of Infectious Diseases in Indoor
Environments, 17 April 2020.
17. Transmission of viruses in droplets and aerosols, ISIAQ Webinar Series: Spread of Infectious
Diseases in Indoor Environments, 14 April 2020.
18. What do environmental engineering and chemistry have to do with transmission of the flu?,
Department of Chemistry, Virginia Tech, 14 February 2020.
19. What do environmental engineering and nanotechnology have to do with transmission of
the flu?, Department of Civil and Environmental Engineering, University of Illinois,
February 2019.
20. Nanotechnology and nanoscience in indoor air, Plenary speaker at Indoor Air Conference
(Philadelphia, PA), 22-27 July 2018.
21. Building characteristics influence human exposure to respiratory viruses, Gordon Research
Conference on Microbiology of the Built Environment (Biddeford, ME), 16-20 July 2018.
22. Factors shaping the human exposome in the built environment, Keynote speaker at
International Society for Environmental Epidemiology / Exposure Science – Asia Chapter
conference (Taipei), 22-24 June 2018.
23. Influenza virus survival and dynamics in the atmosphere, College of Public Health,
National Yang Ming University, 26 February 2018.
24. Environmental engineering to forecast transmission of pathogens, Virginia Academy of
Sciences, Engineering, and Medicine Summit, 31 October 2017.
25. Engineered nanomaterials in the atmosphere, College of Public Health, National Taiwan
University, 26 October 2017.
26. Influenza virus survival and dynamics in the atmosphere, Department of Mechanical
Engineering, University of Hong Kong, 17 October 2017.
27. Characterization of engineered nanomaterials in the atmosphere, Gordon Research
Conference on Environmental Nanotechnology (Stowe, VT), 19 June 2017.
28. Engineered nanomaterials in the atmosphere, Department of Chemistry, Roanoke College,
21 April 2017.
29. Engineered nanomaterials in the atmosphere, Department of Chemical Engineering,
Columbia University, 21 March 2017.
30. Viruses in the built environment, National Academy of Sciences committee meeting on
Microbiomes of the Built Environment, Beckman Center, University of California at Irvine,
18 October 2016.
31. What does environmental engineering have to do with the flu? Environmental Health
Sciences, School of Public Health, University of South Carolina, 14 September 2016.
32. What does environmental engineering have to do with the flu? Civil and Environmental
Engineering, University of Michigan, 10 February 2016.
14 of 23
33. Sources and impacts of engineered nanoparticles, Plenary speaker at American Association
for Aerosol Research 34th Annual Conference (Minneapolis, MN), 12-16 October 2015.
34. Potential for aerosolization of Ebola in the indoor environment, WERF/WEF Invited Experts
Discussion on Ebola in Wastewater – What Are the Research Needs? 30 October 2014.
35. Engineered nanomaterials in the air we breathe, Chemical and Environmental Engineering,
Yale University, 9 April 2014.
36. Do engineered nanoparticles in air present a health risk? Invited seminar in the Center for
Environmental and Health Sciences, University of Montana, 28 February 2014.
37. Halving it all, Keynote speaker at Society of Women Engineers Region E Conference,
Blacksburg, VA, 28-30 March 2014.
38. Emissions and transformations of airborne nanomaterials, NSF Nanoscale Science and
Engineering Grantees Conference (Arlington, VA), 3-4 December 2012.
39. How the indoor environment affects influenza transmission, Sloan Foundation Conference
on Microbiology of the Built Environment (Boulder, CO), 30-31 May 2012.
40. Atmospheric transformations of carbonaceous nanomaterials, American Chemical Society
Spring 2012 National Meeting (San Diego, CA), 25-29 March 2012.
41. Neighborhood-scale measurement of air pollutant emissions by eddy covariance,
Department of Civil and Environmental Engineering, Cornell University, 2009.
42. Neighborhood-scale measurement of air pollutant emissions by eddy covariance,
Department of Civil and Environmental Engineering, University of Minnesota, 2009.
43. Megacity polycyclic aromatic hydrocarbon exposure, emissions, and transformations in
Mexico, Department of Civil and Environmental Engineering, Washington State University,
2008.
44. Megacity polycyclic aromatic hydrocarbon exposure, emissions, and transformations in
Mexico, Department of Civil and Environmental Engineering, University of Washington,
2007.
45. Megacity polycyclic aromatic hydrocarbon exposure, emissions, and transformations in
Mexico, Department of Civil and Environmental Engineering, Duke University, 2007.
46. Megacity polycyclic aromatic hydrocarbon exposure, emissions, and transformations in
Mexico, Department of Civil and Environmental Engineering, Rice University, 2007.
47. Carbonaceous nanoparticles: exposure and cross-media environmental fate, Atlantic Nano
Forum, Alexandria, Virginia, 2007.
48. Engineering a sustainable atmosphere: from nano to micro to mega, Department of Civil
and Environmental Engineering, University of California at Berkeley, 2007.
49. Engineering a sustainable atmosphere: from nano to micro to mega, Department of Civil
and Environmental Engineering, University of California at Davis, 2007.
50. Quantification of air pollutant emissions over multiple spatial scales: from cow pies to cities,
Department of Biological Systems Engineering, Virginia Tech, 2006.
15 of 23
51. Weekly and decadal changes in NOx emissions and tropospheric ozone, American
Geophysical Union Fall Meeting (San Francisco, CA), 13-17 December 2004.
52. Diurnal, weekly, and decadal changes in photochemical air pollution, Department of
Mechanical Engineering, University of California at San Diego, 2002.
53. Diurnal, weekly, and decadal changes in photochemical air pollution, Department of Civil
and Environmental Engineering, Virginia Tech, 2002.
54. Diurnal, weekly, and decadal changes in photochemical air pollution, Department of
Geography and Environmental Engineering, Johns Hopkins, 2002.
55. Diurnal, weekly, and decadal changes in photochemical air pollution, Department of Civil
and Environmental Engineering, Rice University, 2002.
56. Diurnal, weekly, and decadal changes in photochemical air pollution, Atmospheric Sciences,
Harvard University, 2002.
57. The weekend ozone effect in central California, Department of Civil and Environmental
Engineering, Carnegie Mellon, 2000.
16 of 23
SPONSORED RESEARCH
PIs
Project title
Source
Role
and
share
PI
40%
Total
amount
Dates
Marr, L.C.
Pruden, A.
Ogejo, J.
The Spread of Antimicrobial
Resistance Through the
Atmosphere
NSF
Pruden, A.
Garner, E.
Vikesland, P.
Marr, L.
Zhang, L.
Heath, L. S.
The Use of Next Generation
Sequencing (NGS)
Technologies and
Metagenomics Approaches
to Evaluate Water and
Wastewater Quality
Monitoring and Treatment
Technologies
Water
Research
Foundation
Co-PI
5%
Agah, M.
Marr, L.C.
Alden, A.
Gohlke, J.M.
Kim, I.
Miller, A.M.
Nazhandali, L.
Marr, L.C.
Bibby, K.J.
Intelligent Wearable
Analyzer for Vapor
Exposure (iWAVE) in
Transportation Sector
National
Institute of
Occupational
Safety and
Health
Co-PI
24%
Workshop on Viruses in the
Built Environment
Sloan
Foundation
PI
50%
$30,000 1/198/19
Marr, L.C.
Prussin II, A.J.
Pruden, A.
Gohlke, J.M.
Kolivras, K.N.
Krometis, L.A.H.
Marr, L.C.
Ranganathan, S.
Probiotic Sprays
Industry
PI
40%
$68,318 7/186/19
Spatiotemporal analysis of
adverse birth outcomes in
Central Appalachia
National
Institutes of
Health
Co-PI
13%
$425,791 7/187/20
Vikesland, P.J.
Marr, L.C.
Quantification of the pH of
Aerosol Droplets via
Nanoprobe Based Sensing
National
Science
Foundation
Co-PI
30%
$330,000 8/177/20
Marr, L.C.
Tang, J.W.
Relationship Between
Indoor and Outdoor
Humidity in Temperate vs.
Tropical Regions
Sloan
Foundation
PI
50%
17 of 23
$329,999 5/204/23
$300,000 10/193/21
$2,342,024 6/195/23
$9,500 6/178/18
Dietrich, A.M.
Gallagher, D.L.
Gohlke, J.
Marr, L.C.
Assessing an Emerging
Human Health Threat:
Inhalation Exposure to
Aerosolized Contaminants
from Drinking Water
National
Science
Foundation
Co-PI
5%
$299,973 7/166/19
Marr, L.C.
Vejerano, E.P.
The Effect of Humidity and
Particle Composition on
Partitioning of Volatile
Organic Compounds
Army
Research
Office
PI
10%
$450,000 10/159/18
Hochella, M.F.
Marr, L.C.
Michel, F.M.
Pruden, A.
Vikesland, P.J.
NNCI: The VT National
Center for Earth and
Environmental
Nanotechnology
Infrastructure (VT NCE2NI)
National
Science
Foundation
Co-PI
5%
Marr, L.C.
Pruden, A.
RAPID: The Role of
Aerosolization from
Wastewater Systems in the
Fate and Transport of and
Exposure to Ebola Virus
National
Science
Foundation
PI
80%
$130,610 1/1512/15
Marr, L.C.
Pruden, A.
Potential for Exposure to
Ebola Virus Surrogates
Aerosolized from
Wastewater Systems
Water
Environment
Research
Foundation
PI
50%
$35,000 3/152/16
Marr, L.C.
Pruden, A.
Solving the Mystery of
Humidity's Effect on
Survival of Airborne
Microorganisms
National
Science
Foundation
PI
80%
$330,000 8/148/17
Little, J.C.
Marr, L.C.
Rapid Methods to Estimate
Exposure to SVOCs in
Indoor Environments
Environmental Co-PI
Protection
50%
Agency
Marr, L.C.
The Role of PathogenEnvironment Interactions in
the Pandemic Potential of
Influenza
National
Institutes of
Health
PI
100%
$2,282,173 8/137/18
Hochella, M.F.
Vikesland, P.J.
Marr, L.C.
Center for Environmental
Implications of
Nanotechnology
National
Science
Foundation
Co-PI
30%
$3,150,000 9/088/18
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$1,119,337 10/159/20
$900,000 8/148/17
Marr, L.C.
Subbiah, E.
Vikesland, P.J.
Paper-Based Sensors for
Airborne Pathogen
Detection
Virginia Tech
Institute for
Critical
Technology
and Applied
Science
PI
34%
$248,752 7/136/15
Marr, L.C.
Pruden, A.J.
Transformation and Fate of
Nanomaterials During
Wastewater Treatment and
Incineration
Environmental PI
Protection
50%
Agency
$599,859 2/111/15
Marr, L.C.
McClure, J.
Air Quality Modeling
System Services (AQMSS)
Virginia
PI
Department of 50%
Environmental
Quality
$830,796 10/1010/19
Agah, M.
Marr, L.C.
Nazhandali, L.
A Miniaturized GC with
MEMS-Enabled Selective
Preconcentration for
Monitoring Exposure to
Transportation-Related Air
Pollutants
National
Institutes of
Health
Co-PI
33%
$417,551 7/126/14
Golparvar, M.
Marr, L.C.
Vision-based Monitoring
and Control of Construction
Operations Carbon
Footprint
Environmental Co-PI
Protection
50%
Agency
$15,000 8/129/13
Marr, L.C.
Exposure Assessment of
Silver Nanoparticles in
Select Children’s Consumer
Products
Environmental PI
Protection
100%
Agency
$69,653 1/1112/12
Marr, L.C.
Collaborative Research:
Characterization of Sources
and Processes of Primary
and Secondary Particulate
Matter (PM) and Precursor
Gases in the CaliforniaMexico Border Region
National
Science
Foundation
PI
100%
$178,310 5/105/13
Waldon, J.
Klopfer, S.D.
Galbraith, J.
Marr, L.
Schoenholtz, S.
Assessment of Natural
Resources and Watershed
Conditions for Four NPS
Units in the Southeastern
Coastal Network of Parks
National Park
Service
Co-PI
20%
$126,495 6/073/09
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Marr, L.C.
CAREER: New Methods for
the Direct Quantification of
Air Pollutant Emissions and
Education of the Next
Generation of Engineers
National
Science
Foundation
PI
100%
$406,990 5/065/11
Marr, L.C.
Improved Quantification of
Particulate Emissions from
Motor Vehicles in Mexico
City
Molina Center PI
for Energy and 100%
the
Environment
$18,117 1/068/07
Gay, S.W.
Marr, L.C.
Hanigan, M.D.
Knowlton, K.F.
Ogejo, J.A.
Effects of Dietary Nitrogen
Manipulation on Ammonia
Emissions from Housing
and Manure Storage
Facilities
United States
Department of
Agriculture
PI
20%
$499,531 1/0612/09
Marr, L.C.
Schweitzer, L.A.
SHENAIR: Modeling Air
Quality in the Shenandoah
Valley
National
Oceanographic and
Atmospheric
Administration
PI
70%
$145,998 1/0612/08
Marr, L.C.
Vikesland, P.V.
Dorn, H.C.
Cross-Media Environmental
Transport, Transformation,
and Fate of Manufactured
Carbonaceous
Nanomaterials
National
Science
Foundation
PI
48%
$350,000 9/058/09
Little, J.C.
Marr, L.C.
Emission of Phthalates from
Vinyl Flooring and
Interaction with Fine
Particles
National
Science
Foundation
Co-PI
50%
$396,391 9/058/09
Schweitzer, L.A.
Marr, L.C.
Sustainable Mobility
Learning Laboratory
American
Honda
Foundation
Co-PI
50%
$78,986 9/058/06
Marr, L.C.
Analysis Of Photochemistry
In Power Plant And
Petrochemical Industry
Plumes
NOAA
PI
100%
$6,000 3/0510/05
Marr, L.C.
Analysis of Motor Vehicle
Particulate Emissions in
Mexico City
U.S.-Mexico
PI
Foundation for 100%
Science
$30,000 8/035/05
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Marr, L.C.
Measurement of Urban Air
Pollutant Emissions
AdvanceVT
PI
100%
$19,305 8/048/05
Marr, L.C.
A Nanoparticle Laboratory
for Environmental and
Public Health Research
Virginia Tech
ASPIRES
PI
100%
$133,426 5/056/06
GRADUATE STUDENTS
Name
Longest, A.
Kormos, D.
Degree
Ph.D.
Ph.D.
Date
2025*
2024*
Pan, J.
Gnegy, M.
Ph.D.
Ph.D.
2022*
2022*
Lin, K.
Ph.D.
2020
Powers, C.W.
Ph.D.
2017
David, R.
Ph.D.
2016
Tiwari, A.J.
Ph.D.
2014
Klapmeyer,
M.E.
Yang, W.
Ph.D.
2012
Ph. D.
2012
Quadros,
M.E.
Moore, T.O.
Ph.D.
2012
Ph.D.
2009
Garcia, E.B.
M.S.
2021
Manuja, A.
Milazzo, M.
M.S.
M.S.
2018
2018
Olson, A.
M.S.
2018
Lin, K.
M.S.
2016
Dissertation/thesis/project title
Survival of Viruses in Droplets and Aerosols
Emissions and Transport of Antimicrobial Resistance Genes
in the Atmosphere
Atmospheric Transport of Bioaerosols
Airborne Virus Community at Wastewater Treatment Plants
(Co-advised by Amy Pruden)
Viability of Viruses in Suspended Aerosols and Stationary
Droplets as a Function of Relative Humidity and Media
Composition
Monitoring the Transport of Microorganisms in Aquatic
Environments Using Unmanned Surface Vehicles (Coadvised by David Schmale)
Impact of Meteorological Conditions and Maturity of
Perithecia on the Release of Fusarium graminearum
Ascospores (Co-advised by David Schmale)
Aerosolization and Atmospheric Transformation of
Carbonaceous Nanomaterials
Characterization of Urban Air Pollutant Emissions by
Eddy Covariance using a Mobile Flux Laboratory
Airborne Transmission of Influenza A Virus in Indoor
Environments
Release of Silver from Nanotechnology Consumer Products
and Potential for Human Exposure
Application of a Mobile Flux Lab for the Atmospheric
Measurement of Emissions (FLAME)
Investigating the Cellular Toxicology of Silver Nanoparticles
Using a Single-Cell, Mitosis-Focused Approach (Co-advised
by Daniela Cimini)
Total Surface Area in Indoor Environments
Potential for City Parks to Reduce Exposure to Hazardous
Air Pollutants
Stable Generation of Submicron Organic Aerosols via
Vaporization-Condensation
Potential for Aerosolization of Ebola Virus Surrogates from
Wastewater Systems
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Wang, Z.
Zhou, X.
Khare, P.
M.S.
M.S.
M.S.
2016
2015
2014
Heidari, B.
M.S.
2014
Baggett, W.
Shores, C.
M.S.
M.S.
2013
2011
Bansal, G.
M.S.
2008
Sparks, J.A.
M.S.
2008
Thornhill,
D.A.
Yeganeh, B.
M.S.
2007
M.S.
2007
Kull, C.M.
M.S.
2005
Booth, E.C.
M.S.
2005
Jiang, M.
M.S.
2005
*Anticipated graduation date
Deposition of Silica Nanoparticles on a Fiber-Based Sensor
Development of Gold Nanocluster-Based Biosensors
Vertical Concentration Gradient of Influenza Viruses
Resuspended from Floor Dust
New Framework for Real-time Measurement, Monitoring,
and Benchmarking of Construction Equipment Emissions
Potential for Exposure to Particulate Matter from Campfires
Sources and Transport of Black Carbon at the United StatesMexico Border near San Diego-Tijuana
Sensitivity of Ozone and Fine Particulate Matter to Local
Emissions in the Shenandoah Valley
The Effects of Manure Handling and Dietary Protein on
Ammonia Emissions from a Flush Dairy
Sources, Transport, and Transformation of Particulate
Polycyclic Aromatic Hydrocarbons in Mexico City
Exposure to and Environmental Fate of Aerosolized
Nanoparticles
Characterization of Airborne Nanoparticles in a
Manufacturing Facility
Volatilization of Naphthalene at a Creosote-Contaminated
Site
Mobile Laboratory Measurement of Black Carbon, Particulate
Polycyclic Aromatic Hydrocarbons and Other Exhaust
Emissions in Mexico City
POST-DOCTORAL RESEARCHERS
Name
Schwake,
D.O.
Dates
2016-2017
Karatum, O.
2016-2017
Lee, M.
2015
Munir, M.
2015
Prussin II,
A.J.
2013-2015
Vejerano, E.
2011-2015
Ph.D.
Arizona State
University,
Microbiology
Duke University, Civil
and Environmental
Engineering
University of Minnesota,
Chemistry
Michigan State
University, Civil and
Environmental
Engineering
Virginia Tech, Plant
Pathology, Physiology,
and Weed Science
Louisiana State
University, Chemistry
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Next position
Visiting Assistant Professor, Methodist
University
Consultant, Exponent
Chemist, US Environmental Protection
Agency
Assistant Professor, University of North
Carolina at Charlotte
Research Scientist and Lab Manager,
Virginia Tech
Assistant Professor, University of South
Carolina
Xie, M.
2014-2015
Bowers, R.
2013-2014
Holder, A.
2009-2010
Benning, J.
2009-2010
University of Colorado,
Mechanical Engineering
University of Colorado,
Biology
UC Berkeley,
Mechanical Engineering
University of Alaska,
Environmental
Engineering
Lecturer, Nanjing University of
Information Science and Technology
Scientist, DOE Joint Genome Institute
Combustion Engineer, US
Environmental Protection Agency
Assistant Professor, South Dakota
School of Mines and Technology
PROFESSIONAL ACTIVITIES
•
Consensus Study on Public Health Interventions and Countermeasures for Advancing
Pandemic and Seasonal Influenza Preparedness and Response, National Academies of
Sciences, Engineering, and Medicine, 2021
•
Lancet COVID-19 Commission Task Force on Safe Work, Safe Schools, and Safe Travel,
2020-2021
•
Airborne Transmission of SARS-CoV-2: A Virtual Workshop, National Academies of
Sciences, Engineering, and Medicine, 2020
•
Board on Environmental Studies and Toxicology, National Academies of Sciences,
Engineering, and Medicine, 2021-2023
•
Associate Editor: Microbiome
•
Committee member for Grand Challenges for Environmental Engineering and Science in the
21st Century, 2017-2018, National Academies of Sciences, Engineering, and Medicine.
•
Editorial Advisory Board member: Environmental Science and Technology Letters; Aerosol
Science and Technology; Environmental Science: Atmospheres; Environmental Science: Processes
and Impacts
•
Treasurer, American Association for Aerosol Research, 2014-2016
•
Reviewer for California Air Resources Board, Environmental Protection Agency, National
Institutes of Health, National Science Foundation, Aerosol Science and Technology, Atmospheric
Chemistry and Physics, Atmospheric Environment, Atmospheric Pollution Research, Atmospheric
Research, Environment International, Environmental Monitoring and Assessment, Environmental
Pollution, Environmental Science: Policy and Impacts, Environmental Science and Technology,
Environmental Science and Technology Letters, Indoor Air, Journal of Applied Meteorology and
Climatology, Journal of Applied Microbiology, Journal of Environmental Engineering and Science,
Journal of Environmental Informatics, Journal of Geophysical Research, Journal of the Air and Waste
Management Association, Journal of the Royal Society Interface, Medicine and Science in Sports and
Exercise, Nature, Nature Communications, Nature Nano, Particle and Fibre Toxicology, Proceedings
of the National Academy of Sciences, Science, Science of the Total Environment, Scientific Reports
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