Poster presentations If your poster has an odd number, you are especially asked to be by your poster in the session on Thursday afternoon, if it has an even number please be there in the Friday morning session. P1 H. Bladh, J. Johnsson, and P.-E. Bengtsson Experimental and theoretical aspects of soot particle sizing using laser-induced incandescence P2 J. Boman, M. J. Gatari, S. M. Gaita, X. Zhang, B. Xue, and A. Wagner Seasonal variation in trace elemental concentrations in PM2.5 particles in Nairobi, Kenya P3 J. Brejcha, and L. Vaidišová Issue of fugitive emission of dust from open pit mines in the North-western Bohemia region P4 S. Bycenkiene, V. Ulevicius, S. Kecorius, and D. Jasineviciene Impact of the biomass burning in spring of 2008 on the aerosol physico-chemical properties in Lithuania P5 A. Dahl, C. Isaxon, E. Nordin, A. Gudmundsson, and M. Bohgard Miniaturized Nanoparticle Monitors P6 M. Dal Maso, A. Kiendler-Scharr, E. Kleist, T. Hohaus, L. Liao, T. F. Mentel, R. Tillmann, and J. Wildt Studying the role of OH oxidation in aerosol formation from biogenic precursors P7 U. Dusek, R. Holzinger, and T. Röckmann Relation between stable carbon isotopes and oxygen content of organic aerosols P8 A. M. L. Ekman, R. Krejci, and P. Tunved The boundary layer Amazonian aerosol population: A combined semi-Lagrangiancloud-resolving model approach. P9 K. Elihn, and P. Berg Particle deposition in the respiratory tract with respect to mass, number and elemental composition in seven industrial plants P10 A. Eriksson, P. Roldin, J. Pagels, and E. Swietlicki. Non-Refractory Chemical Composition of the Submicron Regional Background Aerosol in southern Sweden measured with HR-ToF-AMS P11 J. Friberg, B. G. Martinsson, C. A. M. Brenninkmeijer, M. Hermann, P. P.F. van Velthoven, and A. Zahn Carbonaceous aerosol in UT/LS studied from the CARIBIC platform P12 S. Gagné, T. Nieminen, T. Kurtén, T. Petäjä, V.-M. Kerminen, M. Boy, L. Laakso, and M. Kulmala Factors influencing ion-induced nucleation in a Finnish boreal forest P13 J. Genberg, M. Hyder, E. Nilsson, A. Kristensson, K. Stenström, and E. Swietlicki Carbonaceous aerosol at Vavihill field station in southern Sweden P14 P. Glantz, A. Kokhanovsky, and W. von Hoyningen-Huene Validation of satellite aerosol retrievals over Europe according to diverse algorithms P16 E. Herrmann, D. Brus, A. Hyvärinen, and M. Kulmala Binary nucleation in CFD simulations P17 K. A. H. Hultin, E. D. Nilsson, L. Gomez-Consarnau, J. Pinhassi, R. Krejci, E. M. Mårtensson, and Å. Hagström Aerosol emissions and sea-atmosphere bacteria transfer during bubble-bursting experiments using Baltic Sea water P18 C. E. Jessen, A. Gross, and S. Jørgensen Nitration of Pollen P19 H. Junninen, M. Ehn, T. Petäjä, M. Sipilä, D. Worsnop, and M. Kulmala Novel instrumentation to measure ambient atmospheric ion composition P20 S. Jørgensen, and H. G. Kjaergaard Catalytic effect of H2O on the hydrogen abstraction by OH in dimethylsulfide and dimethylsulfoxide P21 S. Krause, M. Lenz, and A. Behn In-Cylinder-Measurement of particle size spectra P22 K. Kristensen, M. F. Lauridsen, J. R. Norup, S. H. Skov, C. Østerballe, and M. Glasius Monoterpene oxidation products and organosulfates in aerosols from a Danish forest P23 A. Kristensson, J. Rissler, E. Swietlicki, J. Löndahl, and C. Johansson PM2.5: A good proxy for the lung deposited particle dose in residential areas with extensive domestic wood combustion? P24 K. Lehtipalo, H. E. Manninen, S. Gagné , A. Franchin, S. Schobesberger, and M. Kulmala 2nd Ion spectrometer calibration and intercomparison WS in Helsinki 25.5.-26.6.2009 P25 M. Lindskog, A. Malik, J. Pagels, J. Rissler, and M. Sanati Lab-Scale Development of a High Temperature Aerosol Particle Sampling Probe for Field Measurements in Thermochemical Conversion of Biomass P26 V. Loukonen, T. Kurtén, I. K. Ortega, H. Vehkamäki, A. A. H. Pádua, K. Sellegri, and M. Kulmala The role of dimethylamine in sulfuric acid nucleation P27 A. Malik, J. Pagels, M. Lindskog, and M. Sanati Investigation of catalyst deactivation by deposition of size selected soot particles P28 H. E. Manninen, T. Nieminen, E. Asmi, S. Gagné, M. Sipilä, S. Häkkinen, L. Laakso, M. Vana, A. Mirme, S. Mirme, U. Hõrrak, C. Plass-Dülmer, G. Stange, G. Kiss, A. Hoffer, M. Moerman, M. Brinkenberg, G. N. Kouvarakis, K. Bougiatioti, C. O’Dowd, D. Ceburnis, B. Svenningsson, L. Tarozzi, S. Decesari, A. Sonntag, W. Birmili, J. Boulon, K. Sellegri, I. Riipinen, V.-M. Kerminen, and M. Kulmala Long-term field measurements using ion cluster spectrometers in Europe P29 D. Martuzevicius, L. Kliucininkas, T. Prasauskas, E. Krugly, G. Denafas, and B. Strandberg Experimental simulation of particle-bound PAHs resuspension from street dust P30 J. Mikkilä, M. Ehn, and T. Petäjä Hygroscopicity of ambient aerosol particles at Cab P31 P. Molnár, and G. Sällsten Contribution of wood smoke to PM2.5 in a Swedish community during the winter season 2007-08 P32 L . Mölter, M. Weiß, and S. Schuetz Measuring of atmospheric particle size distributions PM2.5 and PM10 with a new environmental monitoring system in Greenland P33 T. Nieminen, K. E. J. Lehtinen, and M. Kulmala Growth of clusters and particles in sub 10 nm size range P34 E. Nordin, M. Lindskog, P. Nilsson, J. Rissler, E. Swietlicki, M. Bohgard, and J. Pagels Lund University Smog Chamber P35 J. K. Nøjgaard Sampling artifacts of aerosol Organic Carbon/ Elemental Carbon (OC/EC) P36 A. Osite, A. Viksna, J. Katkevich, J. Kleperis, and I. Steinberga Black carbon and particulate matter concentrations in Riga city centre P37 K.S. Patel, D. Sahu, J. Nicolás, E. Yubero, and J. Hoinkis Resuspended dust pollution in India P38 A. Pike, Z. Martinsone, M. A. Bake, and D. Sprudza The Affect of Air Ionization to Particles in the Indoor Air P39 S. M. Platt, A. A. Zardini, and M. Bilde Thermodynamics of Organic Aerosols P40 N. L. Prisle, T. Raatikainen, A. Laaksonen, and M. Bilde Cloud Droplet Activation of Mixed Surfactant-Salt Particles P41 A. Reinap, B. L. B. Wiman, B. Svenningsson, and S. Gunnarsson Oak leaves as aerosol collectors P42 P. Roldin, G. Schurgers, B. Svenningsson, E. Swietlicki, A. Eriksson, J. Pagels, E. Nilsson, A. Arneth, M. Ketzel, and S. Gustafson Modeling of aerosol dynamics and particle chemistry using the PSA nucleation theory P43 K. Ruusuvuori, T. Kurtén, H. Vehkamäki, I. K. Ortega, M. Toivola, and M. Kulmala Modelling the sign preference in heterogeneous nucleation P44 M. Schmidt, M. Weiß, and L. Mölter A new calibration method for optical particle counters in the size range of 0.2 to 8 µm P45 J. Spielvogel, L. Keck, X. Guo, and M. Pesch Comprehensive Measurement of Atmospheric Aerosols with a Wide Range Aerosol Spectrometer P46 J. Spielvogel, X. Guo, M. Pesch, L. Keck, and R. Hagler A New Real-time Exposure Monitor for Measuring Airborne Nanoparticles P47 M. Sporre, P. Glantz, and P. Tunved A study of the indirect aerosol effect over a cold ocean using MODIS satellite data and ground-based aerosol measurements P48 V. Ulevicius, G. Raciukaitis, P.Gecys, S. Kecorius, and N. Spirkauskaite Aerosol particle formation and evolution during laser ablation P49 A. Wallén, H. Fricke, and G. Lidén Intercomparison of elementary carbon from source samples of carbonaceous aerosols using the BGI 505-44, the VDI 2465 and the NIOSH 5040 method. P50 F. Wang, P. Roldin, A. Massling, A. Kristensson, E. Swietlicki, D. Fang, and M. Ketzel Modelling of aerosol dynamics under the regional transport from Copenhagen area to southern Sweden P51 H. Vehkamäki, T. Kurtén, and M. Kulmala Nucleation in the Köhler theory? P52 A. A. Zardini, I. Riipinen, I. K. Koponen, M. Kulmala, and M. Bilde Evaporation of multicomponent aerosol particles P53 T. Öberg, and P. Peltola Deposition of persistent organic pollutants under a high voltage power line