中文摘要：

气相条件下的烯烃臭氧化反应是大气中极其重要的反应之一,是多种自由基以及二次有机气溶胶的重要来源,与大气环境和人类生活密切相关.综合以往的研究成果,对早期提出的Criegee机理做了简介,着重阐述了Criegee中间体（CI）的结构及其相关反应、羟自由基的形成机理及萜烯臭氧化形成二次有机气溶胶产物的机理.最后,对未来的研究方向进行了探讨.

英文摘要：

The gas-phase reactions of ozone with alkenes are very important reactions in the atmosphere.They are significant sources of secondary organic aerosol and a number of free radicals,and they are closely related to air quality and human life.Based on previous research findings,this article introduced the Criegee mechanism for the ozonolysis reaction,followed by discussions on the structure and reaction pathways of Criegee intermediates,the mechanisms of formation of the · OH radical,and the formation mechanisms of secondary organic aerosol products.Aspects of futher research were then suggested.