基于PMF模型的南京市VOCs污染特征与来源解析研究  

Research on the characteristics and source analysis of VOCs pollution in Nanjing City based on PMF model

作　　者：胡玲[1] 宋兴伟[1] 吴祺 李莉莉 纪乔木 Hu Ling;Song Xingwei;Wu Qi;Li Lili;Ji Qiaomu(Jiangsu Environmental Monitoring Centre,Nanjing Jiangsu 210019,China;Centre Testing International Corporation(Huai fan)Co.,Ltd9 Huai/an Jiangsu 223001,China)

机构地区：[1]江苏省环境监测中心,江苏南京210019 [2]淮安市华测检测技术有限公司,江苏淮安223001

出　　处：《环境与发展》2022年第4期131-138,143,共9页Environment & Development

基　　金：江苏省生态环境科研课题(课题编号2020020)。

摘　　要：2018-2019年选取南京市四个环境空气监测点位对大气挥发性有机物(Volatile Organic Compounds, VOCs)进行连续采样监测,以了解其排放特征、臭氧生成潜势(Ozone Formation Potential, OFP)及污染来源。结果表明,四个点位中草场门采样点的VOCs浓度和OFP最高,烷烃和含氧有机物的占比较高,OFP的主要贡献物种为含氧有机物(46.50%)。VOCs浓度相关性和PMF源解析结果显示,南京市VOCs的主要来源分别是机动车排放源(25.75%)、燃烧源(22.27%)、溶剂涂料源(15.18%)、工业源(13.71%)、天然源(11.29%)和燃料挥发源(10.37%)。From 2018 to 2019, select four ambient air monitoring points in Nanjing to continuously sample and monitor atmospheric VOCs to understand their emission characteristics, OFP and the sources of pollution. The results showed that the VOCs concentration and OFP at the Cao Chang Men point sampling point were the highest among the four points. Alkanes and oxygenated organic matter accounted for a higher proportion. The main contributing species of OFP was oxygenated organic matter(46.50%). VOCs concentration correlation and PMF source analysis results show that the main sources of VOCs in Nanjing are motor vehicle emission sources(25.75%), combustion sources(22.27%),solvent coating sources(15.18%), industrial sources(13.71%), Natural sources(11.29%) and fuel volatilization sources(10.37%).

关 键 词：VOCS OFPs 排放特征 来源解析 浓度相关性 

分 类 号：X831[环境科学与工程—环境工程]