Aerosol formation in the cyclohexene-ozone system
Aerosol formation in the cyclohexene-ozone system
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DOI：
10.1021/es001180f
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发表时间：
2000-12-01
影响因子：
11.4
通讯作者：
Seinfeld, JH
中科院分区：
文献类型：
--
作者：
Kalberer, M;Yu, J;Seinfeld, JH
某些挥发性有机化合物在大气中的氧化作用可产生蒸气压足够低的产物，从而使这些产物分解成气溶胶相，产生所谓的二次有机气溶胶。众所周知，环己烯光氧化后会产生气溶胶。在这项研究中，我们获得了分子产物的信息，特别是那些在气相和颗粒相之间划分的物种。在气溶胶相中鉴定的化合物包括羟基戊二酸、己二酸和羟基己二酸。与先前的研究一致，发现戊醛是主要的鉴定气相产物，摩尔产率为17%。提出了在气溶胶相中存在相对高蒸气压化合物的可能解释。
Atmospheric oxidation of certain volatile organic compounds can lead to products of sufficiently low vapor pressure that the products partition into the aerosol phase, producing what is termed secondary organic aerosol. Cyclohexene has long been known to produce aerosol upon photooxidation. In this study, we obtain molecular product information especially for those species that partition between the gas and particle phases. Compounds identified in the aerosol phase include hydroxyglutaric acid, adipic acid, and hydroxyadipic acid. In accord with previous studies, pentanal is found to be the predominant identified gasphase products, at a molar yield of 17%. Possible explanations for the presence of relatively high vapor pressure compounds in the aerosol phase are advanced.