摘要
本研究利用近地面O3 及其前体物(VOCs和NO2)监测数据,对宁东基地大气O3 及VOCs进行污染特征、臭氧生成潜势及污染来源解析.研究表明:宁东基地O3 生成过程主要受VOCs的控制;VOCs组分中烷烃、炔烃、OVOC、烯烃占比较高;烯烃浓度占比 10.06%,但其对臭氧的生成贡献OFP却高达 43.49%,丙烯、乙烯、丙醛、甲苯、间/对二甲苯、正丁烷、异戊二烯等是O3 防控的关键VCOs活性物质;加强工业源、燃料挥发、工业生产制造原料挥发逸散、机动车尾气是宁东基地夏季VOCs管控的关键环节.
Abstract
In this study,the pollution characteristics,ozone(O3)formation potential and pollution sources of atmospheric O3 and VOCs in Ningdong base were analyzed by using the monitoring data of near-surface O3 and its precursors(VOCs and NO2).The results show that the O3 formation process in Ningdong base is mainly controlled by VOCs.Alkanes,alkynes,OVOC,and olefins account for a relatively high proportion in VOCs.The olefin concentration accounted for 10.06%,but its contribution to O3 formation potential(OFP)was as high as 43.49%.Among them,propylene,ethylene,propionaldehyde,toluene,m/p-xylene,n-butane and isoprene were the key VCOs active substances for O3 prevention and control.Strengthening industrial sources,fuel volatilization,volatilization and emission of raw materials for industrial production and manufacturing,and motor vehicle exhaust were the key links of VOCs control in Ningdong base in summer.
NETL
NSTL
万方数据