Influence of an organic coating on the reactivity of aqueous aerosols probed by the heterogeneous hydrolysis of N2O5 -: art. no. 1644

被引：111

作者：

Folkers, M ^{[1
]}

Mentel, TF ^{[1
]}

Wahner, A ^{[1
]}

机构：

[1] Forschungszentrum Julich, D-52425 Julich, Germany

来源：

GEOPHYSICAL RESEARCH LETTERS | 2003年 / 30卷 / 12期

关键词：

D O I：

10.1029/2003GL017168

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

[1] Surface-active organic compounds are common constituents of atmospheric aerosol particles. In this work, the effects of organic coatings on the heterogeneous hydrolysis of N2O5 was investigated. For this purpose aqueous NH4HSO4 particles were coated in situ in a large aerosol chamber. The experiments show that films composed of the ozonolysis products of alpha-pinene can reduce the reaction probability by more than an order of magnitude. Model calculations indicate that the main cause for the retardation of the hydrolysis is a slower uptake possibly due to a lower solubility of N2O5 in the organic film.

引用

页数：4

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