摘要
大气氧化性(AOC)是大气氧化的主要驱动力,表现为大气通过氧化反应清除痕量气体并形成二次污染物,是决定大气自净能力的关键因素。羟基自由基(HO·)作为大气氧化过程中的主要参与者,控制多种痕量气体的去除率以及在大气的滞留时间,对全球空气质量和气候有着深远影响。梳理分析了大气HO·的作用机制与环境效应,回顾了大气HO·的研究历史与研究方法,探讨了O_(3)对大气HO·的影响以及HO·来源的时空分异,预测HO·变化趋势的不确定性,阐述了相关大气污染治理技术和政策,最后提出了当前AOC研究中仍待解决的问题和未来的研究方向,以期为深入探索AOC与二次污染物内在联系提供参考。
Atmospheric oxidizing capacity(AOC)was the main driving force of atmospheric oxidation,which was manifested in the removal of trace gases and the formation of secondary pollutants through oxidation reaction,which was the key factor determining the self-purification ability of the atmosphere.HO·as a major participant in the process of atmospheric oxidation,could control the removal rate of various trace gases and the residence time in the atmosphere,and had a far-reaching impact on global air quality and climate.This article analyzed the action mechanism and environmental effects of atmospheric HO·,reviewed the research history of HO·,discussed the impact of O_(3)on HO·,as well as the spatial-temporal differentiation of HO·sources and the uncertainty of predicting HO·change trend,expounded the air pollution control technology and policy,and finally prospected the problems to be solved in the current AOC research and the future research direction,in order to provide a reference for further exploring the internal relationship between AOC and secondary pollutants.
作者
陈妍捷
黎华寿
李晶
秦俊豪
CHEN Yanjie;LI Huashou;LI Jing;QIN Junhao(College of Natural Resources and Environment,South China Agricultural University,Guangzhou Guangdong 510642;South China Key Laboratory of Agro-environment in the Tropics,Ministry of Agriculture and Rural Affairs of China,Guangdong Engineering Research Center for Modern Eco-agriculture and Circular Agriculture,Guangzhou Guangdong 510642)
出处
《环境污染与防治》
CAS
CSCD
北大核心
2023年第2期225-232,共8页
Environmental Pollution & Control
基金
国家自然科学基金资助项目(No.31770479)
广东省基础与应用基础研究基金资助项目(No.2019A1515011823)。
