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Full-Text Articles in Physical Sciences and Mathematics
Phase Considerations In The Gas/Particle Partitioning Of Organic Amines In The Atmosphere, James F. Pankow
Phase Considerations In The Gas/Particle Partitioning Of Organic Amines In The Atmosphere, James F. Pankow
Chemistry Faculty Publications and Presentations
Amines in the atmosphere are of interest because of their likely role in new particle formation, and because of anthropogenic emissions of amines at post-combustion carbon capture (PCCC) facilities. A conceptual framework for considering the partitioning of a monobasic amine (Am = unprotonated "free-base form) from the gas phase to atmospheric particulate matter (PM) is presented for cases when the PM may be composed of multiple liquid phases. Three types of liquid phases are considered as being individually or simultaneously possible for absorptive uptake of atmospheric amines: w) a mostly water phase; α ) a mostly (by mass) organic phase …
Molecular View Modeling Of Atmospheric Organic Particulate Matter: Incorporating Molecular Structure And Co-Condensation Of Water, James F. Pankow, Marguerite Colasurdo Marks, Kelley C. Barsanti, Abdullah Mahmud, William E. Asher, Jingyi Li, Qi Ying, Shantanu H. Jathar, Michael J. Kleeman
Molecular View Modeling Of Atmospheric Organic Particulate Matter: Incorporating Molecular Structure And Co-Condensation Of Water, James F. Pankow, Marguerite Colasurdo Marks, Kelley C. Barsanti, Abdullah Mahmud, William E. Asher, Jingyi Li, Qi Ying, Shantanu H. Jathar, Michael J. Kleeman
Chemistry Faculty Publications and Presentations
Most urban and regional models used to predict levels of organic particulate matter (OPM) are based on fundamental equations for gas/particle partitioning, but make the highly simplifying, anonymized-view (AV) assumptions that OPM levels are not affected by either: a) the molecular. characteristics of the condensing organic compounds (other than simple volatility); or b) co-condensation of water as driven by non-zero relative humidity (RH) values. The simplifying assumptions have allowed parameterized chamber results for formation of secondary organic aerosol (SOA) (e.g., “two-product” (2p) coefficients) to be incorporated in chemical transport models. However, a return towards a less simplistic (and more computationally …