摘要
大气过氧自由基化学是对流层大气化学的重要组成部分,对于理解大气氧化性、光化学臭氧和二次有机气溶胶生成等核心科学问题具有重要意义。基于实地测量,准确掌握大气过氧自由基的浓度水平、进行相关化学行为分析以及实测结果模拟分析一直是大气过氧自由基化学研究的重点和难点。本文总结了大气过氧自由基实地测量的技术方法,回顾了涉及大气过氧自由基的大型实地观测实验,分析了已有观测实验中大气过氧自由基的浓度水平和差异,归纳了实地测量数据在化学机理研究中的应用,讨论了模拟分析实地测量结果中的主要科学发现。最后,提出该领域中尚存在的问题及可能的重点研究方向。
Peroxy radical chemistry is the main component of tropospheric chemistry, which is critical for the understanding of essential tropospheric issues such as atmospheric cleansing capacity, photochemical ozone production and secondary organic aerosol formations. Field measurements of peroxy radical concentrations and related analysis with observation based model are the prominent steps to foster the current understanding of peroxy radical chemistry. This paper reviews the state of measurement techniques for peroxy radical, extensively revisits the previous field studies with direct measurements of peroxy radical, outlins the peroxy radical concentrations reported in previous field observations, summarizes the tests of photochemical mechanism with direct field measurement results and discusses the major scientific findings achieved so far. Finally, an outlook for the new directions in the study of atmospheric peroxy radical chemistry is proposed.
出处
《化学进展》
SCIE
CAS
CSCD
北大核心
2014年第4期682-694,共13页
Progress in Chemistry
基金
国家自然科学基金项目(No.41005066)
环境模拟与污染控制国家重点联合实验室专项经费(No.13K03ESPCP
13Z02ESPCP)资助~~
关键词
大气过氧自由基
实地测量
测量技术
化学机理
peroxy radical
field measurement
measurement technique
chemical mechanism
