氯碱厂颗粒物中持久性有毒污染物污染特征  

Distribution Characteristics of Persistent Toxic Substances in PM_(10) in Chlorine Alkali Factory

作　　者：程金平[1] 赵文昌[1] 吴澄[1] 王文华[1] 

机构地区：[1]上海交通大学环境科学与工程学院,上海200240

出　　处：《同济大学学报（自然科学版）》2008年第3期366-369,共4页Journal of Tongji University:Natural Science

基　　金：国家"九七三"重点基础研究发展计划资助项目(2003CB415003)

摘　　要：为了研究上海市某工业区氯碱厂可吸入颗粒物(PM10)中多氯联苯(PCBs)、有机氯农药(OCPs)和多环芳烃(PAHs)污染特征及其来源,应用大流量采样器,每2个月采取其周边大气PM10,连续采样1年,参照美国EPA系列方法进行分析.结果发现,PCBs,OCPs和PAHs年平均值分别为396.11,94.69,69 365.17 pg.m-3;污染物质量浓度冬春季高于夏秋季;PM10中,PCBs同类物的分布呈现出冬季以高氯取代的PCBs占优势,而夏季以低氯取代的PCBs为主;OCPs分布与PCBs相似,并且冬季有滴滴涕(DDTs)的近期输入;大气颗粒物中,3,4,5环的多环芳烃PAHs占较大比例,主要受石油源和燃煤源的复合污染.In order to study the distributions characteristics of PCBs, OCPs and PAHs in PM10 in chlorine alkali factory in a typical chemical industry zone in Shanghai, the samples of PM10 around the factory were collected with the great flux sampling instrument every two months for one year. The PCBs, OCPs and PAHs were analyzed according to the US EPA method 8000 series. The average concentrations of PCBs, OCPs and PAHs in one year were 396.11,94.69 and 69 365.17 pg·m^-3 respectively. The pollutants concentrations in PM10 in winter and in spring were higher than those in summer and in autumn. The congeners distribution was characterized by lower molecular weight PCB congeners in summer and higher molecular weight in winter. The OCPs concentrations in the area were rather similar to PCBs distribution and there were new inputs of DDTs in the investigated area in winter. 3, 4 and 5 ring PAHs make up a large proportion of the atomospheric particulates, and they are mainly from petroleum and coal-fired compound source.

关 键 词：氯碱厂 可吸入颗粒物 多氯联苯 有机氯农药 多环芳烃 

分 类 号：X131.1[环境科学与工程—环境科学] X52