Oxidation Flow Reactor and Its Application in Secondary Organic Aerosol Formation in Laboratory Studies

Xueqi Ma, Kun Li*, Shan Zhang, Zhaomin Yang, Li Xu, Narcisse Tsona Tchinda and Lin Du*, 
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Abstract

Secondary organic aerosol (SOA) is a key component of atmospheric particulate matter that affects air quality and climate. Oxidation flow reactors (OFRs) have been widely used in recent years to simulate the formation of SOA due to their ability to achieve high oxidation levels, thus becoming a promising complement to traditional smog chambers. This review comprehensively overviews existing OFRs and compares their structural differences. It also discusses the research progress on the formation of SOA in OFRs from various biogenic and anthropogenic organic gas precursors in laboratories. We evaluate the limitations and advancements of various OFRs by comparing the SOA yield and chemical characteristics obtained from different OFRs. Overall, OFR is crucial for understanding the formation mechanism of SOA and quantifying the contribution of different precursors to atmospheric particulate matter formation. Nevertheless, due to the complexity of SOA formation mechanisms in the troposphere, further research is still needed in the design of OFR, and the atmospheric oxidation mechanism under the composite system, to provide more accurate data for atmospheric models.

Abstract Image

氧化流动反应器及其在二次有机气溶胶形成中的应用
二次有机气溶胶(SOA)是影响空气质量和气候的大气颗粒物的关键组成部分。氧化流反应器(ofr)由于能够实现高氧化水平,近年来被广泛用于模拟SOA的形成,从而成为传统烟雾室的一个有希望的补充。本文全面概述了现有ofr,并比较了它们的结构差异。讨论了实验室中各种生物源和人为有机气体前体在ofr中形成SOA的研究进展。我们通过比较不同ofr获得的SOA产率和化学特性来评估各种ofr的局限性和进步。总的来说,OFR对于理解SOA的形成机制和量化不同前体对大气颗粒物形成的贡献至关重要。然而,由于对流层中SOA形成机制的复杂性,OFR的设计以及复合体系下的大气氧化机制仍需进一步研究,为大气模式提供更准确的数据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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