电子废物拆解区农业土壤中PCNs的污染水平、分布特征与来源解析  

Level,Distribution,and Source Identification of Polychlorinated Naphthalenes in Surface Agricultural Soils from an Electronic Waste Recycling Area

作　　者：王学彤[1] 贾金盼[1] 李元成[1] 孙阳昭[2] 吴明红[1] 盛国英[1,3] 傅家谟[1,3] 

机构地区：[1]上海大学环境与化学工程学院环境污染与健康研究所,上海200444 [2]中华人民共和国环境保护部,北京100035 [3]中国科学院广州地球化学研究所有机地球化学国家重点实验室,广州510640

出　　处：《环境科学》2012年第1期247-252,共6页Environmental Science

基　　金：国家自然科学基金重点项目(40830744);上海市重点学科项目(S30109)

摘　　要：用GC-NCI-MS法测定了路桥农业表层土壤中46种多氯萘(PCNs)的含量.目的是了解该地区表层土壤中PCNs的污染水平、空间分布特征和来源.结果表明,所有表层土壤样品中ΣPCNs的含量为0.062～2.92 ng.g-1,平均值为0.630 ng.g-1.多数样品中tetra-CNs和penta-CNs是最主要的同族体,分别占18.4%～88.8%(平均值为46.7%)和8.40%～53.1%(平均值为30.7%),其次是tri-CNs,范围为0～47.3%,平均值为10.6%.聚类分析和燃烧指示物分析表明,采样点主要受Halowax1014和Halowax 1013工业品污染,PCBs工业品和电子废物燃烧也可能对污染有贡献.与国内外其它研究相比,研究区域内土壤中PCNs污染处于中等水平.The concentration of 46 polychlorinated naphthalenes （PCNs） in the agricultural soils from Luqiao was analyzed by GC-NCI-MS. The objectives of this study were to investigate the contents, spatial distribution and sources of PCNs. The total concentrations of PCNs （ΣPCNs） in soil samples were in the range of 0.062 to 2.92 ng·g-1, with a mean of 0.630 ng·g-1.Tetra-CNs and penta-CNs were the predominant homologues in most of the samples, accounting for 18.4% - 88.8% and 8.40% - 53.1%, with average values of 46.7% and 30.7%, respectively, followed by tri-CNs, accounting for 0 - 47.3%, with a mean of 10.6%. Cluster analysis and combustion marker analysis showed that the sampling sites were mainly polluted by Halowax 1014 and Halowax 1013, also possibly polluted by PCBs mixtures and e-waste combustion process. Compared to other studies, the PCNs concentration in this study was at a medium level.

关 键 词：电子废物 土壤 多氯萘 含量 分布 来源 

分 类 号：X131.3[环境科学与工程—环境科学]