摘要
利用濮阳市2021年夏季臭氧重污染时段VOCs在线监测数据,分析VOCs污染特征并对来源进行解析。结果表明:监测期间VOCs平均体积分数为47.88×10^(-9),各组分占比表现为烷烃>OVOCs>芳香烃>炔烃>烯烃>卤代烃>含硫化合物,体积分数排名前三的物种是乙炔、苯乙烯和乙烷,臭氧超标日主要由芳香烃转化导致。芳香烃是臭氧生成潜势的主要贡献者,苯乙烯、间/对二甲苯、甲苯、异戊烷应作为优控物种。PMF模型识别出6个VOCs排放源,按贡献率依次为工业排放源>机动车尾气及油品挥发源>石油化工源>溶剂使用源>燃料燃烧源>植物源。
Based on the online monitoring data of VOCs during the heavy ozone pollution period in summer of 2021 in Puyang,the pollution characteristics of VOCs and the pollution sources were analyzed.The results showed that the average volume fraction of VOCs during the monitoring period was 47.88×10^(-9),and the proportion of each component in an descending order was alkanes>OVOCs>aromatic hydrocarbons>alkynes>alkenes>halogenated hydrocarbons>sulfur compounds.The top three species in volume fraction were acetylene,styrene and ethane.Excessive ozone periods were mainly caused by aromatic hydrocarbon transformation.Aromatic hydrocarbons were the major contributors to ozone formation potential of VOCs.Styrene,m/p-xylene,toluene and isopentane and should be used as the priority control species.Six VOCs emission sources were identified by PMF model.According to contribution rate,industrial emission sources>vehicle exhaust and oil volatile sources>petrochemical sources>solvent sources>fuel combustion sources>plant emission sources.
作者
肖静
郭锐利
王冰
郝晓丹
金阳
Xiao Jing;Guo Ruili;Wang Bing;Hao Xiaodan;Jin Yang(Puyang Radiation Environmental Safety Technology Center,Puyang 457000,China;Puyang Ecological Environment Monitoring Center of Henan Province,Puyang 457000,China;Puyang Ecological Environment Monitoring and Emergency Center,Puyang 457000,China)
出处
《环境科学与管理》
CAS
2023年第1期122-127,共6页
Environmental Science and Management
基金
濮阳市重大科技专项(200119)。
关键词
挥发性有机物
臭氧生成潜势
优控物种
来源解析
volatile organic compounds
ozoneformationpotential
priority control species
sourceapportionment
