大气二次有机气溶胶研究进展  

Research progress of secondary organic aerosol

作　　者：胡若兰[1] 王书肖[1] HU Ruolan;WANG Shuxiao(School of Environment,Tsinghua University,Beijng 100084,China)

机构地区：[1]清华大学环境学院,北京100084

出　　处：《科技导报》2021年第15期95-109,共15页Science & Technology Review

基　　金：国家自然科学基金杰出青年基金项目(21625701)。

摘　　要：大气二次有机气溶胶(SOA)严重影响着空气质量、大气辐射平衡和人体健康等,对SOA生成和控制的研究对于揭示颗粒物污染成因、为打赢蓝天保卫战提供决策依据都具有重要意义。但由于SOA的组成成分和生成过程复杂、来源繁多、具体机理难以识别,有关SOA的研究仍然面临着众多挑战。在调研近2年表在环境及大气化学等领域的国际重要学术期刊上的研究成果的基础上,总结了在SOA的分子组成、污染特征、前体物或来源、生成与老化过程的机理、关键影响因素、对大气光学性质和人体健康的影响等方面的研究进展。Secondary organic aerosol(SOA) is one of the most important components of PM2.5. It significantly influences air quality, radiation balance and human health. Thus, studying the formation and control of SOA has a significant meaning in revealing the cause of particulate pollution and improving eco-environment. However, there are still many challenges in the field of SOA study because of the complexity of organic compounds, reactions and atmospheric conditions. The purpose of the paper is to summarize the progress of SOA research based on investigating the literature published on the top international academic journals in the field of environment and atmospheric chemistry in 2019. The molecular characteristics and sources of SOA are delved into with a variety of novel or modified methods and instruments in both field studies and laboratory simulations. The formation process and major influence factors of SOA from some natural and anthropogenic precursors are investigated.Atmospheric aqueous chemistry and the interaction between organic and inorganic compounds are found playing an important role in the formation and aging of SOA. In addition, the contribution of SOA to the change of aerosol optical property and the impact of aerosol on human health are estimated. In conclusion, it is necessary to pay attention to the further research of SOA so as to take effective actions to control particulate pollution.

关 键 词：细颗粒物 二次有机气溶胶 生物与老化机制 

分 类 号：X513[环境科学与工程—环境工程]