重庆市涪陵区秋季VOCs浓度特征及来源解析

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关键词：挥发性有机物（VOCs）；臭氧生成潜势（OFP）；二次有机气溶胶（SOA）；来源解析中图分类号：X701 文献标识码：A 文章编号：1008-9500（2025）08-0216-05DOI： 10.3969/j.issn.1008-9500.2025.08.066

Concentration Characteristics and Source Apportionment of VOCs in Autumn in Fuling District of Chongqing

TIAN Jing，TENGPing （Chongqing Fuling Ecological Environment Monitoring Station，Chongqing 408ooo，China）

Abstract：Usinganonlinegas chromatographycontinuous monitoring system，56VolatileOrganicCompounds （VOCs）were monitoredonlineinFuling District，Chongqingfrom August4thto August19th，2O23.Theresults showedthattheaverage detected mass concentration of VOCs in Fuling District during the monitoring period was 13.209×10-9 .The Ozone FormationPotential（OFP）of VOCsisestimatedbythe Maximum Incremental Reactivity（MIR）.Theaverage estimated potential for the generation of Secondary Organic Aerosol （SOA） is 20.638μg/m3 .Using the Positive Matrix Factorization （PMF） model，fourfactorswerederived，amelypetrochemicalsoures，utomotiveeustources，ologicalourcs，ndfuel volatilizationsources，withpetrochemical sourcesandautomotiveexhaustsources contributingsignificantly.Therefore，itis necessrytofocusonthecontrolofactivitiesrelated topetrochemicalfuels，suchasroadtrafic，shipoilproductsandgas stations.

KeyWord：Volatile Organic Compounds （VOCs）; Ozone Formation Potential （OFP）; Secondary Organic Aerosol （SOA） source apportionment

挥发性有机物（VolatileOrganicCompounds，VOCs）是指具有较低的熔点、较高的饱和蒸气压、在常温下容易挥发成气体的有机化合物。（剩余7706字）