Fundamental Heterogeneous Reaction Chemistry Related to Secondary Organic Aerosols (SOA) in the Atmosphere
Fundamental Heterogeneous Reaction Chemistry Related to Secondary Organic Aerosols (SOA) in the Atmosphere
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DOI：
10.5047/meep.2016.00401.0001
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发表时间：
2016-11
影响因子：
5
通讯作者：
H. Akimoto
中科院分区：
文献类型：
--
作者：
H. Akimoto
二羧酸，较大的多功能化合物，低聚物，和有机硫和有机氮化合物在二次有机气溶胶（SOA）的形成的典型反应途径，通过实验室实验研究揭示了与简短的介绍现场观测。在形成这些化合物的大多数反应中，乙二醛，甲基乙二醛和相关的双官能羰基化合物作为前体起着重要的作用，因此它们在气相中的形成途径进行了讨论。然后提出了一个实质性的讨论，OH引发的水相自由基氧化反应的乙二醛和其他羰基形成的二羧酸，较大的多官能化合物和低聚物，和水相非自由基反应，形成低聚物，有机硫酸盐和有机氮化合物。最后，讨论了与SOA在大气中老化有关的气-固界面上气态O3、OH和NO3与液态和固态有机气溶胶的非均相氧化反应。
Typical reaction pathways of formation of dicarboxylic acids, larger multifunctional compounds, oligomers, and organosulfur and organonitrogen compounds in secondary organic aerosols (SOA), revealed by laboratory experimental studies are reviewed with a short introduction to field observations. In most of the reactions forming these compounds, glyoxal, methyl glyoxal and related difunctional carbonyl compounds play an important role as precursors, and so their formation pathways in the gas phase are discussed first. A substantial discussion is then presented for the OH-initiated aqueous phase radical oxidation reactions of glyoxal and other carbonyls which form dicarboxylic acids, larger multifunctional compounds and oligomers, and aqueous-phase non-radical reactions which form oligomers, organosulfates and organonitrogen compounds. Finally, the heterogeneous oxidation reaction of gaseous O3, OH and NO3 with liquid and solid organic aerosols at the air-particle interface is discussed relating to the aging of SOA in the atmosphere.