摘要
采用质子转移反应飞行时间质谱法走航监测技术,于2021年6—7月对某典型工业城市城区及周边开展走航及驻点监测,监测数据分析城市挥发性有机物(volatile organic compounds,VOCs)组分特征、污染分布以及转化臭氧活性等。VOCs来源贡献中溶剂使用源占61.01%,自然源占23.3%,机动车尾气源占15.69%。VOCs臭氧生成潜势前10物质占82.47%,浓度为500.35μg/m3,其中OVOCs占42.93%、苯系物占8.49%、烃类31.05%。中心城区VOCs受周边区域的集群企业溶剂使用污染源影响较大,且溶剂中乙酸乙烯酯、二甲苯、环己酮应为该城市臭氧与VOCs污染防治的管控重点。
The proton transfer reaction time-of-flight mass spectrometry(ptr-tof-ms)navigation monitoring technology was used to carry out navigation and station monitoring in the urban area and surrounding areas of a typical industrial city from June to July 2021.The monitoring data were used to analyze the composition characteristics,pollution distribution and ozone conversion activity of VOCs in the city.Among the sources of VOCs,solvent usage accounted for 61.01%,natural sources accounted for 23.3%,and motor vehicle exhaust sources accounted for 15.69%.The top 10 substances with ozone generation potential of VOCs accounted for 82.47%,and the concentration was 500.35μg/m3,of which OVOCs accounted for 42.93%,benzene series accounted for 8.49%,and hydrocarbons accounted for 31.05%.VOCs in the central urban area were greatly affected by the pollution sources used by cluster enterprises in the surrounding areas,and vinyl acetate,xylene and cyclohexanone in the solvent should be the control focus of ozone and VOCs Pollution Prevention and control in the city.
作者
张怡娟
黄绍祥
高明
ZHANG Yi-juan;HUANG Shaoxiang;GAO Ming(Nankang Technology Service Station of Ganzhou Ecological Environment Technology Service Center,Ganzhou Jiangxi 341000,China)
出处
《环境科学导刊》
2023年第4期65-69,共5页
Environmental Science Survey
关键词
VOCS
臭氧
走航监测
质子转移反应飞行时间质谱
工业城市
volatile organic compounds
ozone
navigation monitoring
proton transfer reaction time of flight mass spectrometry
industrial city
