湖北某工业园区夏季VOCs特征及臭氧生成潜势分析  

Analysis of VOCs characteristics and ozone formation potential in an industrial park in Hubei Province

作　　者：王立娟 秦萌 WANG Lijuan;QIN Meng(Sinosteel Wuhan Sepri Green Century Safety Management&Consultancy Co.,Ltd.,Wuhan Hubei 430081,China;不详)

机构地区：[1]中钢武汉安环院绿世纪安全管理顾问有限公司,湖北武汉400081 [2]襄阳市大气污染防治管理中心,湖北襄阳441000

出　　处：《工业安全与环保》2024年第3期92-97,共6页Industrial Safety and Environmental Protection

摘　　要：为了解湖北某工业园区的VOCs排放特征和臭氧生成潜势,基于2021年6月的在线监测数据,对该工业园区的VOCs浓度、组分、日间变化及臭氧生成潜势(OFP)进行了分析。结果表明,该工业园区的VOCs平均体积分数为(55.3±32.3)×10^(-9),且呈现从深夜到日间逐渐下降的趋势。在VOCs组分中,卤代烃占比最大,占VOCs总浓度的33.3%。以二氯甲烷为主要污染物的卤代烃在夜间的排放和积累是VOCs在该时段高浓度的主要原因。该工业园区的总OFP平均值为241.7±156.6 g/m^(3),组分中芳香烃和烯烃对OFP的贡献最大,两者共占OFP的73.4%。PSCF表明,园区本地的臭氧生成和累积是导致该区域臭氧污染的重要因素。这些结果表明,加强对该工业园区VOCs排放企业的管理可能有助于这一区域臭氧污染的消除。To study the VOCs emission characteristics and ozone formation potential of an industrial park in Hubei Province,based on the online monitoring data in June 2021,the VOCs concentration,composition,daytime variation and ozone formation potential(OFP)of the industrial park are analyzed.The results show that the total mixing ratio of VOCs is(55.3±32.3)×10^(-9) in the industrial park during the observed period,and the VOCs level constantly declined from midnight to daytime.Halohydrocarbons are the most abundant VOCs,accounting for 33.3%of the total VOCs.Dichloromethane is the majority component in halohydrocarbons,which is probably exhausted by medical industries in midnight.The strong emission and accumulation behavior of halohydrocarbons,such as dichloromethane and chloroethane,is the main reason of high levels of VOCs during midnight.The ozone formation potential during the monitoring period is 241.7±156.6 g/m^(3).Aromatics and alkenes are major contributors to OFP,accounting for 73.4%of the total OFP.Ethylene and propylene are possibly from the fuel and gasoline evaporation and vehicle emission,lead-ing to a higher OFP levels during the morning time.

关 键 词：工业园区 VOCS 组分特征 日内变化 OFP 

分 类 号：X51[环境科学与工程—环境工程]