@article{
 title = {Towards closing the gap between hygroscopic growth and activation for secondary organic aerosol - Part 2: Theoretical approaches},
 type = {article},
 year = {2009},
 identifiers = {[object Object]},
 keywords = {alpha-pinene,beta-pinene,cloud,condensation nucleus activity,counter,cycloalkenes,equilibrium,model,monoterpenes,o-3,oxidation,ozonolysis,particles,single-parameter representation,size,soot,surface-tension},
 pages = {3987-3997},
 volume = {9},
 websites = {<Go to ISI>://000267324700011,<Go to ISI>://000267324700010},
 id = {91ff9ce7-54d6-3971-8d1f-705433d9b35c},
 created = {2015-05-08T02:33:08.000Z},
 file_attached = {false},
 profile_id = {f8c267c4-4c39-31dc-80fa-3a9691373386},
 group_id = {63e349d6-2c70-3938-9e67-2f6483f6cbab},
 last_modified = {2015-05-08T12:58:04.000Z},
 read = {false},
 starred = {false},
 authored = {false},
 confirmed = {true},
 hidden = {false},
 source_type = {Journal Article},
 notes = {        <b>From Duplicate 1 ( </b>        <b>          </b><b><i>Towards closing the gap between hygroscopic growth and activation for secondary organic aerosol - Part 2: Theoretical approaches</i></b><b>        </b>        <b> - Petters, M D; Wex, H; Carrico, C M; Hallbauer, E; Massling, A; McMeeking, G R; Poulain, L; Wu, Z; Kreidenweis, S M; Stratmann, F )<br/>        </b>        <br/>Petters, M. D. Wex, H. Carrico, C. M. Hallbauer, E. Massling, A. McMeeking, G. R. Poulain, L. Wu, Z. Kreidenweis, S. M. Stratmann, F.<br/>        <br/>        <b>From Duplicate 2 ( </b>        <b>          </b><b><i>Towards closing the gap between hygroscopic growth and activation for secondary organic aerosol: Part 1-Evidence from measurements</i></b><b>        </b>        <b> - Wex, H; Petters, M D; Carrico, C M; Hallbauer, E; Massling, A; McMeeking, G R; Poulain, L; Wu, Z; Kreidenweis, S M; Stratmann, F )<br/>        </b>        <br/>Wex, H. Petters, M. D. Carrico, C. M. Hallbauer, E. Massling, A. McMeeking, G. R. Poulain, L. Wu, Z. Kreidenweis, S. M. Stratmann, F.<br/>        <br/>      },
 abstract = {We examine the hygroscopic properties of secondary organic aerosol particles generated through the reaction of alpha-pinene and ozone using a continuous flow reaction chamber. The water activity versus composition relationship is calculated from measurements of growth factors at relative humidities up to 99.6% and from measurements of cloud condensation nuclei activity. The observed relationships are complex, suggesting highly non-ideal behavior for aerosol water contents at relative humidities less than 98%. We present two models that may explain the observed water activity-composition relationship equally well. The first model assumes that the aerosol is a pseudo binary mixture of infinitely water soluble compounds and sparingly soluble compounds that gradually enter the solution as dilution increases. The second model is used to compute the Gibbs free energy of the aerosol-water mixture and shows that the aerosol behaves similarly to what can be expected for single compounds that contain a certain fraction of oxygenated and non-polar functional groups.},
 bibtype = {article},
 author = {Wex, H and Petters, M D and Carrico, C M and Hallbauer, E and Massling, A and McMeeking, G R and Poulain, L and Wu, Z and Kreidenweis, S M and Stratmann, F},
 journal = {Atmospheric Chemistry and Physics},
 number = {12}
}

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D. Wex, H. Carrico, C. M. Hallbauer, E. Massling, A. McMeeking, G. R. Poulain, L. Wu, Z. Kreidenweis, S. M. Stratmann, F.<br/> <br/> <b>From Duplicate 2 ( </b> <b> </b><b><i>Towards closing the gap between hygroscopic growth and activation for secondary organic aerosol: Part 1-Evidence from measurements</i></b><b> </b> <b> - Wex, H; Petters, M D; Carrico, C M; Hallbauer, E; Massling, A; McMeeking, G R; Poulain, L; Wu, Z; Kreidenweis, S M; Stratmann, F )<br/> </b> <br/>Wex, H. Petters, M. D. Carrico, C. M. Hallbauer, E. Massling, A. McMeeking, G. R. Poulain, L. Wu, Z. Kreidenweis, S. M. Stratmann, F.<br/> <br/> ","abstract":"We examine the hygroscopic properties of secondary organic aerosol particles generated through the reaction of alpha-pinene and ozone using a continuous flow reaction chamber. The water activity versus composition relationship is calculated from measurements of growth factors at relative humidities up to 99.6% and from measurements of cloud condensation nuclei activity. The observed relationships are complex, suggesting highly non-ideal behavior for aerosol water contents at relative humidities less than 98%. We present two models that may explain the observed water activity-composition relationship equally well. The first model assumes that the aerosol is a pseudo binary mixture of infinitely water soluble compounds and sparingly soluble compounds that gradually enter the solution as dilution increases. 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