VOCs走航观测在化工园区污染源排查中的应用——以江苏省如东园区为例  

Application of VOCs Cruise Observation in Pollution Sources Investigation of Chemical ParksTake Rudong Park in Jiangsu Province as An Example

作　　者：陈刚 童颂颖 王旭涛 诸露露 金辰晨 CHEN Gang;TONG Song-ying;WANG Xu-tao;ZHU Lu-lu;JIN Chen-chen(Focused Photonics(Hangzhou),Inc.,Hangzhou 310052,China)

机构地区：[1]聚光科技(杭州)股份有限公司,浙江杭州310052

出　　处：《环境科技》2023年第3期66-70,共5页Environmental Science and Technology

基　　金：国家重点研发计划项目(2017YFD0401302);浙江省尖兵领雁计划项目(2022C03084)。

摘　　要：基于单光子电离飞行时间质谱(SPI-TOFMS)数据,研究如东化工园夏季大气中VOCs排放水平、变化特征及污染来源。结果表明,走航观测VOCs质量浓度范围为16.65~107.91μg/m3,均值为37.66μg/m3,主要组分为含氧有机物、芳香烃、卤代烃、有机硫和有机胺等;前10位VOCs组分依次为2-己酮、氯苯、甲苯、2-丁酮、DMF、二甲苯、二甲二硫醚、四氯乙烯、苯和丙酮,占总VOCs浓度的78.7%;累计32次走航样本共出现高值点60次,出现高值频次的组分主要为芳香烃(40%)、卤代烃(35%)和OVOCs(15%);观测期间二甲苯、2-己酮、甲苯和异戊二烯对臭氧生成贡献较大,OFP贡献前3的组分为芳香烃、OVOCs和烯烃。利用走航观测能够快速获取VOCs排放特征,且时空分辨率较高,在化工园区污染源排查中具有广泛应用前景。Based on the single-photon ionization time-of-flight mass spectrometry(SPI-TOFMS) data,variation characteristics and pollution sources of VOCs in the atmosphere of Rudong Chemical Park in summer were studied.The results showed that the average concentration range of VOCs during navigation was 16.65 ~ 107.91 μg/m3,the average VOCs was37.66 μg/m3,and mainly composed of oxygen-containing compounds,aromatic hydrocarbons,halogenated hydrocarbons,organic sulfur and organic amines.The top 10 VOCs species in order were 2-hexanone,chlorobenzene,toluene,2-butanone,DMF,xylene,dimethyl disulfide,tetrachloroethylene,benzene and acetone,accounting for 78.7% of the TVOC concentration.Among the 32 navigation observations,60 high-concentration monitoring points were found,the main species with high frequency were aromatic hydrocarbons(40%),halogenated hydrocarbons(35%) and OVOCs(15%).Xylenes,2-hexanone,toluene and isoprene contributed more to ozone generation during the observation period,and the top 3 components contributing to OFP were aromatic hydrocarbons,OVOCs and olefins.The research shows that the VOCs emission characteristics can be quickly obtained by using the navigation observation,with high spatial and temporal resolution,and it has a wide application prospect in pollution sources investigation of chemical industry park.

关 键 词：SPI-TOFMS VOCS 走航观测 化工园区 污染源排查 

分 类 号：X8[环境科学与工程—环境工程]