二次有机气溶胶的水相形成研究  

Studies on Formation of Aqueous Secondary Organic Aerosols

作　　者：祁骞 周学华[1] 王文兴[1] 

机构地区：[1]山东大学环境研究院,济南250100

出　　处：《化学进展》2014年第2期458-466,共9页Progress in Chemistry

基　　金：山东省自然科学基金项目(No.ZR2010DQ022);山东大学自主创新基金项目(No.2012TS041)资助~~

摘　　要：二次有机气溶胶是大气颗粒物中的主要成分,对大气环境、气候以及人类健康等有重要影响。近年来的研究表明,水相形成二次有机气溶胶与传统气相形成二次有机气溶胶对二次有机气溶胶的贡献相当,且能够解释用传统气相形成方法无法解释的野外观测与模型模拟以及野外观测与室内烟雾箱模拟二次有机气溶胶在颗粒大小、分布、浓度以及老化程度等方面的差异,因而成为研究的热点。本综述重点介绍了目前大气中二次有机气溶胶水相形成的实验室研究,包括黑暗条件下的非自由基反应(水合、缩醛/半缩醛、醇醛缩合和催化反应)和光照条件下的自由基反应。同时,对二次有机气溶胶水相形成研究的发展方向进行了展望。Secondary organic aerosol （SOA） is the major species in the atmospheric particles and has an important impact on the atmospheric environment, climate and human health. In recent years, the formation of aqueous SOA has been becoming a research hotspot. This is due to its comparable contribution to SOA budget to that from the traditional reaction of gas phase, and the important roles in explaining the discrepancies between field observation and model results, field observation and chamber simulation results in the laboratory on size, distribution, concentration and aging degree of SOA, which cann＇t be understood by the traditional SOA formation through gas phase. In this article, we introduce current major ways to form aqueous SOA in laboratory studies, including non-radical reactions in the dark （related to hydration, acetal/hemiacetal, aldol condensation and catalytic reactions） and radical reactions under the light. Meanwhile, the prospects for the study direction of the formation of aqueous SOA are given.

关 键 词：二次有机气溶胶的水相形成 黑暗条件下反应 光化学反应 

分 类 号：X131.1[环境科学与工程—环境科学] O648.18[理学—物理化学]