Search Results - "Koponen, I. K."

Ozone-initiated VOC and particle emissions from a cleaning agent and an air freshener: Risk assessment of acute airway effects by Nørgaard, A.W., Kudal, J.D., Kofoed-Sørensen, V., Koponen, I.K., Wolkoff, P.

“…Emissions of volatile organic compounds and ultrafine particles from a kitchen cleaning agent (cream) and plug-in air freshener were investigated in a 20m3…”
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Measurements in a highly polluted Asian mega city: observations of aerosol number size distribution, modal parameters and nucleation events by Mönkkönen, P., Koponen, I. K., Lehtinen, K. E. J., Hämeri, K., Uma, R., Kulmala, M.

“…Diurnal variation of number size distribution (particle size 3-800nm) and modal parameters (geometric standard deviation, geometric mean diameter and modal…”
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On the growth of nucleation mode particles: source rates of condensable vapor in polluted and clean environments by Kulmala, M., Petäjä, T., Mönkkönen, P., Koponen, I. K., Dal Maso, M., Aalto, P. P., Lehtinen, K. E. J., Kerminen, V.-M.

“…The growth properties of nucleation mode particles were investigated. The variation of source rates of condensable vapors in different locations and…”
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Toxicity of pristine and paint-embedded TiO 2 nanomaterials by Saber, A T, Mortensen, A, Szarek, J, Jacobsen, N R, Levin, M, Koponen, I K, Jensen, K A, Vogel, U, Wallin, H

“…Little is known on the toxicity of nanomaterials in the user phase. Inclusion of nanomaterials in paints is a common nanotechnology application. This study…”
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Chemical composition of boundary layer aerosol over the Atlantic Ocean and at an Antarctic site by Virkkula, A., Teinilä, K., Hillamo, R., Kerminen, V.-M., Saarikoski, S., Aurela, M., Viidanoja, J., Paatero, J., Koponen, I. K., Kulmala, M.

“…Aerosol chemical composition was measured over the Atlantic Ocean in November–December 1999 and at the Finnish Antarctic research station Aboa in January 2000…”
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Sub-micron atmospheric aerosols in the surroundings of Marseille and Athens: physical characterization and new particle formation by Petäjä, T., Kerminen, V.-M., Dal Maso, M., Junninen, H., Koponen, I. K., Hussein, T., Aalto, P. P., Andronopoulos, S., Robin, D., Hämeri, K., Bartzis, J. G., Kulmala, M.

“…The properties of atmospheric aerosol particles in Marseille and Athens were investigated. The studies were performed in Marseille, France, during July 2002…”
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Relationship and variations of aerosol number and PM10 mass concentrations in a highly polluted urban environment New Delhi, India by MÖNKKÖNEN, P, UMA, R, SRINIVASAN, D, KOPONEN, I. K, LEHTINEN, K. E. J, HÄMERI, K, SURESH, R, SHARMA, V. P, KULMALA, M

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Effective real refractive index of dry aerosols in the Antarctic boundary layer by Virkkula, A., Koponen, I. K., Teinilä, K., Hillamo, R., Kerminen, V-M., Kulmala, M.

“…The real refractive index (nr) of dry aerosols measured at an Antarctic site was calculated using two methods. Number size distributions were applied in a Mie…”
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Insulation fiber deposition in the airways of men and rats. A review of experimental and computational studies by Nielsen, G.D., Koponen, I.K

“…The typical insulation rock, slag and glass wool fibers are high volume materials. Current exposure levels in industry (generally ≤ 1 fiber/cm3 with a median…”
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Evaluation of air samplers and filter materials for collection and recovery of airborne norovirus by Uhrbrand, K., Koponen, I. K., Schultz, A. C., Madsen, A. M.

“…Aims The aim of this study was to identify the most efficient sampling method for quantitative PCR‐based detection of airborne human norovirus (NoV). Methods…”
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Evaluation and modeling of the size fractionated aerosol particle number concentration measurements nearby a major road in Helsinki – Part II: Aerosol measurements within the SAPPHIRE project by Hussein, T., Kukkonen, J., Korhonen, H., Pohjola, M., Pirjola, L., Wraith, D., Härkönen, J., Teinilä, K., Koponen, I. K., Karppinen, A., Hillamo, R., Kulmala, M.

“…This study presents an evaluation and modeling exercise of the size fractionated aerosol particle number concentrations measured nearby a major road in…”
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Death of nucleation and Aitken mode particles: observations at extreme atmospheric conditions and their theoretical explanation by Mönkkönen, P., Koponen, I.K., Lehtinen, K.E.J., Uma, R., Srinivasan, D., Hämeri, K., Kulmala, M.

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The particle detection efficiency of the TSI-3007 condensation particle counter by Hämeri, K, Koponen, I.K, Aalto, P.P, Kulmala, M

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Limitations in the Use of Unipolar Charging for Electrical Mobility Sizing Instruments: A Study of the Fast Mobility Particle Sizer by Levin, M., Gudmundsson, A., Pagels, J. H., Fierz, M., Mølhave, K., Löndahl, J., Jensen, K. A., Koponen, I. K.

“…A comparison between three different types of particle sizing instruments (fast mobility particle sizer, FMPS; electrical low pressure impactor, ELPI; and…”
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Testing the near field/far field model performance for prediction of particulate matter emissions in a paint factory by Koivisto, A J, Jensen, A C Ø, Levin, M, Kling, K I, Maso, M Dal, Nielsen, S H, Jensen, K A, Koponen, I K

“…A Near Field/Far Field (NF/FF) model is a well-accepted tool for precautionary exposure assessment but its capability to estimate particulate matter (PM)…”
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Exposure to Air Pollution inside Electric and Diesel-Powered Passenger Trains by Andersen, Maria Helena G, Johannesson, Sandra, Fonseca, Ana Sofia, Clausen, Per Axel, Saber, Anne Thoustrup, Roursgaard, Martin, Loeschner, Katrin, Koponen, Ismo K, Loft, Steffen, Vogel, Ulla, Møller, Peter

“…Diesel-powered trains are used worldwide for passenger transport. The present study aimed to assess air pollution concentrations in passenger cars from diesel…”
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Evaporation of ternary inorganic/organic aqueous droplets: Sodium chloride, succinic acid and water by Zardini, A.A., Riipinen, I., Koponen, I.K., Kulmala, M., Bilde, M.

“…We studied the evaporation of submicrometer-sized, aqueous solution aerosol particles containing different mixing ratios of succinic acid, sodium chloride, and…”
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Number size distributions and concentrations of the continental summer aerosols in Queen Maud Land, Antarctica by Koponen, Ismo K., Virkkula, Aki, Hillamo, Risto, Kerminen, Veli-Matti, Kulmala, Markku

“…Total particle number concentrations and particle size distributions in the diameter range 3–800 nm were measured in continental Antarctica during the austral…”
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ONE-YEAR DATA OF SUBMICRON SIZE MODES OF TROPOSPHERIC BACKGROUND AEROSOL IN SOUTHERN FINLAND by Mäkelä, Jyrki M., Koponen, Ismo K., Aalto, Pasi, Kulmala, Markku

“…Number size distributions of submicron atmospheric aerosol were measured between February 1, 1996 and January 31, 1997 at a forest site in Southern Finland…”
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Number size distributions and concentrations of marine aerosols: Observations during a cruise between the English Channel and the coast of Antarctica by Koponen, Ismo K., Virkkula, Aki, Hillamo, Risto, Kerminen, Veli-Matti, Kulmala, Markku

“…Submicron aerosol number size distributions were measured on board the research ship Akademic Fedorov during a cruise from the English Channel to the coast of…”
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