共 41 条
Condensation of organic vapors on an externally mixed aerosol population
被引:14
作者:
Cruz, CN
[1
]
Pandis, SN
[1
]
机构:
[1] Carnegie Mellon Univ, Dept Chem Engn, Pittsburgh, PA 15213 USA
关键词:
D O I:
10.1080/027868299304110
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
The condensation of organic vapors on a nearly monodisperse externally mixed aerosol population was measured in order to test the hypothesis that organic species may preferentially condense on specific substrates. The organic species tested were glutaric acid, a typical secondary organic species, and DOP, a model organic for primary species. A series of organic and inorganic substrate pairs were investigated: NaCl, (NH4)(2)SO4, glutaric acid, and adipic acid. The growth of these aerosol populations was measured using a Tandem Differential Mobility Analyzer and the results were analyzed using transition regime mass transfer theory. The results show that no detectable preferential condensation occurs for either species on any of the substrates studied. The implications of these results to SOA formation models are discussed.
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页码:392 / 407
页数:16
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