Analysis of selected phthalates in Canadian indoor dust collected using household vacuum and standardized sampling techniques C. Kubwabo1*, P. E. Rasmussen1, X. Fan1, I. Kosarac1, F. Wu1, A. Zidek2, S.L. Kuchta2 1 Health Canada, Healthy Environments and Consumer Safety Branch, Environmental Health Science and Research Bureau, Ottawa (Ontario), Canada K1A 0K9 2 Health Canada, Healthy Environments and Consumer Safety Branch, Existing Substances Risk Assessment Bureau, Ottawa (Ontario), Canada K1A 0K9 *E-mail: Cariton.Kubwabo@hc-sc.gc.ca; Tel: +1 (613) 941-6081; Fax: +1 (613) 946-3573 Table S1. Published Studies on Phthalates in House Dust Reference Origin (number of samples) Øie et al., 1997 Norway (n= 38) Phthalates reported Detection Method LOD/MDL (µg/g) LOQ (µg/g) Mean (µg/g) Median (µg/g) Range (µg/g) GC/MS (SIM) DBP 100 10-1030 Rudel et al., 2003 110 0-440 640 100-1610 0-110 DEP 10 DIBP 10 0-300 DINP 100 0-1380 GC/MS (SIM) USA (n=120) Fromme et al., 2004 (MRL) DEP 4 4.98 <MRL-111 DNBP 24 20.1 <MRL-352 BzBP 3 45.4 3.87-1310 DEHP 8 340 16.7-7700 DCHP 0.8 1.88 <MRL-62.7 DEHA 0.4 5.97 0.935-391 DNHP 0.1 1.1 <MRL-30.6 DIBP 1 1.91 <MRL-39.1 DBP Germany (n=30) Becker et al., 2004 BzBP DEHP GC/MS (SIM) 0.5 47 BzBP 0.5 86.1 29.7 DEHP 0.5 775.5 703.4 6.1 DEP 0.5 44.6 DMP 0.5 10.8 1.5 DMPP 0.5 54.6 37.5 DNOP Not reported DPP Not reported DCHP Not reported Germany (n=252) GC/MS and LC/MS DEHP Bornehag et al., 2005 55.6 20 508 22-5330 GC/MS (SIM) Sweden (n=346) DEP 40 31 0 0-2425 DINP 40 639 41 0-40667 DIBP 40 97 45 0-3810 BzBP 40 319 135 0-45549 DnBP 40 226 150 0-5446 DEHP 40 1310 770 0-40459 DMP Not reported 260 280 DEP Not reported 350 340 DnBP Not reported 7860 9930 DEHP Not reported 960 1050 BzBP Not reported 320 340 DnOP Not reported 250 300 Not specified Kolarik et al., 2008 Bulgaria (n=177) Abb et al., 2009 Langer et al., 2010 Bergh et al., 2011 LC/ESIMS/MS Germany (n=30) BzBP 5 15.2 DBP 14 87.4 DEHP 4 604 DINP 10 129 DIDP 10 33.6 GC/MS (SIM) Sweden DEP 3.1 1.7 Homes (n=497) Daycare centers (n=151) DnBP 8.1 15 DiBP 16.6 27 BzBP 4.2 3.7 DEHP 220 210 Sweden (n=30) GC/MS/MS DMP Not reported 0.1 0.04 DEP Not reported 11 3.7 DiBP Not reported 6 4 DBP Not reported 130 130 BzBP Not reported 31 17 DEHP Kim et al., 2011 Guo and Kannan, 2011 Hsu et al., 2012 Gevao et al., 2012 980 680 GC/MS (SIM) Korea (n=335) DEP Not reported 19.46 DBP 0.657 118.56 29-542 BzBP 0.017 385.02 <LOD-100 DEHP 0.015 389.27 131-705 <LOD-72 GC/MS (SIM) China (n=75) USA (n=33) Not reported DMP 0.002 2 0.2 n.d.-8.2 n.d.-45.5 DEP 0.002 2 0.4 DIBP 0.002 2 17.2 0.7-299 DBP 0.002 2 20.1 1.5-1160 DNHP 0.002 2 n.d. n.d.-11.4 BzBP 0.002 2 0.2 n.d.-393 DCHP 0.002 2 n.d. n.d.-0.3 DEHP 0.002 2 228 9.9-9650 DNOP 0.01 10 0.2 n.d.-45.7 GC/MS (SIM) Taiwan (n=101) DMP Not reported DEP Not reported 0.1 1 DBP Not reported 20.2 BzBP Not reported 1 DEHP Not reported 753.3 GC/MS (SIM) Kuwait (n=21) DMP 0.004 DEP DBP DnHP 3.15 0.01 0.03 1.5 1.8 < d. l.-0.1 0.1-16 51 45 8.3-160 0.2 0.39 < d. l.-4.0 BzBP 6.4 8.6 < d. l.-160 DcHP 0.3 2.9 < d. l.-910 1700 2256 380-7800 14 14 < d. l.-1300 DEPH 96 DnOP This study Canada (n = 126) GC/MS/MS DMP 0.04 0.13 0.12 <MDL-22 DEP 0.47 1.57 1.96 <MDL-193 DIBP 0.51 1.71 5.17 <MDL-69 DBP 0.30 0.98 16.8 <MDL-1392 DHxP 0.11 0.37 0.47 <MDL-20 BzBP 0.14 0.45 42 0.57-944 DIHepP 0.52 1.75 19 <MDL-1223 DEHP 2.93 9.76 462 36-3836 DCHP 0.17 0.58 0.21 <MDL-3 DMCHP1a 0.04 0.13 ND <MDL-4 a 0.06 0.22 0.53 <MDL-24 DMCHP2 DBzP+ BzEHPb 0.36 1.18 3.1 <MDL-61 B79P 0.12 0.39 1 <MDL-52 DINP 1.07 3.58 112 3.3-1364 DIDP 1.22 4.06 111 5.3-1428 DUP 0.15 0.49 4 <MDL-259 a The DMCHP standard (from ChemService Inc., West Chester, PA, USA) was listed as bis(4-methylcyclohexyl) phthalate showed two well-resolved peaks during GC/MS analysis and they gave similar EI mass spectra. We hypothesized that the first compound eluted earlier on ZB-5 column to be bis(1-methylcyclohexyl) and the second bis(4-methylcyclohexyl). However, their identity needs further confirmation. b DBzP and BzEHP could not be separated on ZB-5 chromatographic column; they also have same MRM transitions. Therefore, the concentration presented is the total concentration of both DBzP and BzEHP. References Abb, M., Heinrich, T., Sorkau, E. and Lorenz, W. (2009) Phthalates in house dust, Environ Int, 35, 965-970. Becker, K., Seiwert, M., Angerer, J., Heger, W., Koch, H.M., Nagorka, R., Rosskamp, E., Schluter, C., Seifert, B. and Ullrich, D. (2004) DEHP metabolites in urine of children and DEHP in house dust, Int J Hyg Environ Health, 207, 409-417. Bergh, C., Torgrip, R., Emenius, G. and Ostman, C. (2011) Organophosphate and phthalate esters in air and settled dust - a multilocation indoor study, Indoor Air, 21, 67-76. 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