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中文摘要：
有机硫酸酯是近年来新发现的二次有机气溶胶化合物,是大气PM2.5的重要组分,是人为活动和生物排放的产物,不仅危害人体健康,还对全球气候产生影响。本文综述在不同大气环境下有机硫酸酯的种类结构,即：森林（清洁地区）以植被排放的异戊二烯和α-/β-蒎烯为前体物、城市（污染地区）以多环芳烃为前体物、受植被和人类活动共同影响的地区则以羰基化合物为前体物,与不同大气氧化剂在SO2/H2SO4作用下形成有机硫酸酯的大气光化学过程;总结了到目前为止,有机硫酸酯类化合物在世界各地大气PM2.5中的浓度水平;以及各技术手段在分析、检测有机硫酸酯类化合物时的优势和缺陷;讨论了影响有机硫酸酯形成的因素;提出了有机硫酸酯研究亟待解决的问题,并对未来研究方向进行了展望。
英文摘要：
Organosulfates which have been discovered in secondary organic aerosols are important constituents of PM2.5in the atmosphere. Formed through anthropogenic activities and biogenic emissions,they have negative impacts on not only human health but also global climate change. Based on major precursors in different atmospheric environments,i. e.,biogenic volatile organic compounds isoprene and α-/β-pinene in forest（ clean area）,anthropogenic polycyclic aromatic hydrocarbons in urban（ polluted area）,and biogenic and anthropogenic mixed sources carbonyls in areas affected by both vegetation and human activities,we elaborated systematically the categories and structures of organosulfates and their photooxidation formation pathway under various atmospheric conditions with different atmospheric oxidants in the presence of SO2/H2SO4. Then,relevant literatures have been reviewed as much as possible and the concentration levels in PM2.5in reported areas worldwide aresummarized.Moreover,up-to-date analytical techniques are described,as well as their benefits and drawbacks. Finally,impact factors of organosulfates formation are discussed. At the end of context,several issues are proposed which need to be addressed urgently,and future research directions in organosulfates are also prospected.
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