Exploring atmospheric free-radical chemistry in China: the self-cleansing capacity and the formation of secondary air pollution.

Exploring atmospheric free-radical chemistry in China: the self-cleansing capacity and the formation of secondary air pollution.
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探索中国大气自由基化学:自净能力与二次空气污染的形成

DOI:
10.1093/nsr/nwy073
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发表时间:
2019-05
影响因子:
20.6
通讯作者:
Zhang Y
Zhang Y
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Lu K;Guo S;Tan Z;Wang H;Shang D;Liu Y;Li X;Wu Z;Hu M;Zhang Y

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自1971年以来,人们已经知道大气中的自由基在维持对流层氧化能力方面起着关键作用。氧化力的存在是对流层消除人类排放的主要空气污染物以及生物圈排放的主要空气污染物的重要特征。然而,由于主要污染物的快速氧化,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世界大气化学领域的一项艰巨的任务,这包括两类工作:一是建立可靠的自由基检测系统;二是进行综合的实地研究,以便能够对目标自由基的源和汇进行研究,如羟基和硝酸根。在这篇综述中,我们试图回顾中国在这种化学复杂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的可能联系。
Abstract 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 NO3. 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.
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