Lu Keding, Guo Song, Tan Zhaofeng, Wang Haichao, Shang Dongjie, Liu Yuhan, Li Xin, Wu Zhijun, Hu Min, Zhang Yuanhang
State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China.
CAS Center for Excellence in Regional Atmospheric Environment, Chinese Academy of Sciences, Xiamen 361021, China.
Natl Sci Rev. 2019 May;6(3):579-594. doi: 10.1093/nsr/nwy073. Epub 2018 Jul 19.
Since 1971, it has been known that the atmospheric free radicals play a pivotal role in maintaining the oxidizing power of the troposphere. The existence of the oxidizing power is an important feature of the troposphere to remove primary air pollutants emitted from human beings as well as those from the biosphere. Nevertheless, serious secondary air-pollution incidents can take place due to fast oxidation of the primary pollutants. Elucidating the atmospheric free-radical chemistry is a demanding task in the field of atmospheric chemistry worldwide, which includes two kinds of work: first, the setup of reliable radical detection systems; second, integrated field studies that enable closure studies on the sources and sinks of targeted radicals such as OH and NO. In this review, we try to review the Chinese efforts to explore the atmospheric free-radical chemistry in such chemical complex environments and the possible link of this fast gas-phase oxidation with the fast formation of secondary air pollution in the city-cluster areas in China.
自1971年以来，人们已经知道大气自由基在维持对流层的氧化能力方面起着关键作用。氧化能力的存在是对流层的一个重要特征，它能够去除人类以及生物圈排放的主要空气污染物。然而，由于一次污染物的快速氧化，可能会发生严重的二次空气污染事件。阐明大气自由基化学是全球大气化学领域一项艰巨的任务，这包括两项工作：第一，建立可靠的自由基检测系统；第二，开展综合实地研究，以便对诸如OH和NO等目标自由基的来源和汇进行闭合研究。在这篇综述中，我们试图回顾中国在如此复杂化学环境中探索大气自由基化学的努力，以及这种快速气相氧化与中国城市群地区二次空气污染快速形成之间可能存在的联系。
