State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China.
Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, P. R. China.
J Phys Chem A. 2021 May 13;125(18):3813-3825. doi: 10.1021/acs.jpca.0c10236. Epub 2021 Mar 9.
Oxidants are central species in the atmosphere, where they not only determine secondary particle formation but also impact human health and climate change. In general, they are unstable, highly reactive, and recyclable and have been studied in field observations, laboratory studies, and model simulations. The most widely investigated oxidants, such as OH radicals, O, and Cl atom, HONO, NO, NO, and Criegee Intermediates (CIs) have attracted more attention recently. Furthermore, secondary particles formed in the oxidations processes impact the particle physicochemical properties, such as hygroscopicity and optical properties and therefore impact the atmospheric radiation balance. Therefore, the newest investigation results of important oxidants (HONO, NO, NO, and CIs) are reviewed in this manuscript, and the environmental effects of secondary particles formed through corresponding oxidation processes are also stated. Furthermore, some perspectives are further discussed in the article.
氧化剂是大气中的中心物质，它们不仅决定了二次粒子的形成，还影响着人类健康和气候变化。一般来说，氧化剂不稳定、反应活性高、可循环利用，已经在现场观测、实验室研究和模型模拟中进行了研究。最近，人们对最广泛研究的氧化剂，如 OH 自由基、O 和 Cl 原子、HONO、NO、NO 和 Criegee 中间体 (CIs) ，引起了更多的关注。此外，氧化过程中形成的二次粒子会影响粒子的物理化学性质，如吸湿性和光学性质，从而影响大气辐射平衡。因此，本文综述了重要氧化剂（HONO、NO、NO 和 CIs）的最新研究结果，并说明了相应氧化过程形成的二次粒子的环境影响。此外，文章还进一步讨论了一些观点。
