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

作者：Xueqi Ma, Kun Li, Shan Zhang, Zhaomin Yang, Li Xu, Narcisse T. Tsona, Lin Du · 发表于：ACS ES&T Air · 年份：2025 · DOI：10.1021/acsestair.5c00047 · 被引用次数：6 · 研究领域：Atmospheric chemistry and aerosols、Air Quality and Health Impacts、Air Quality Monitoring and Forecasting

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.