臭氧重污染时期VOCs污染特征数值建模研究  

Numerical Modeling Analysis of VOCs Pollution Characteristics During Heavy Ozone Pollution

作　　者：邢昱 Xing Yu(Ecological Environment Monitoring Center of Henan Province, Zhengzhou 450004, China)

机构地区：[1]河南省生态环境监测中心,河南郑州450004

出　　处：《环境科学与管理》2022年第4期73-77,共5页Environmental Science and Management

摘　　要：VOCs是造成臭氧污染的关键体物,建模分析臭氧重污染时期VOCs污染特征,获取生成臭氧的关键VOCs物种,明确造成臭氧污染的主要来源,为制定臭氧污染防治策略提供依据。选取某臭氧污染严重区域为研究区域,选取CAMx O_(3)模拟系统为分析VOCs污染特征的数值模拟平台,分析臭氧重污染时期VOCs污染特征。结果表明,研究区域臭氧污染较为严重,乙烯和甲苯是VOCs生成臭氧贡献度最高的化学组分;烷烃在VOCs组分中的体积分数最大;机动车尾气排放和工业污染源是造成VOCs含量过高,臭氧污染严重的重要来源,应重点控制研究区域工业排放以及机动车尾气排放问题。VOCs are the key for causing ozone pollution.By modeling and analyzing the characteristics of VOCs during heavy ozone pollution,this study obtained the key VOCs species that generate ozone,clarifying the main sources of ozone pollution,and providing a basis for formulating ozone pollution prevention strategies.An area with severe ozone pollution was selected as the research area,the CAMx O_(3) simulation system was selected as a numerical simulation platform for analyzing the characteristics of VOCs pollution.The characteristics of VOCs pollution in the process of heavy ozone pollution were analyzed.The results show that the ozone pollution in the study area is relatively serious.Ethylene and toluene are the chemical components with the highest contribution to the generation of ozone from VOCs.The volume fraction of alkanes in the VOCs components is the largest.Motor vehicle exhaust emissions and industrial pollution sources are important sources of excessive VOCs content and serious ozone pollution.The control of industrial emissions and motor vehicle exhaust emissions in the study area should be focused.

关 键 词：臭氧重污染 VOCS 污染特征 数值建模分析 贡献度 

分 类 号：X51[环境科学与工程—环境工程]