电子废物拆解区河流沉积物中多氯萘的污染水平、分布特征及来源  

Concentration,distribution,and source identification of polychlorinated naphthalenes in sediments 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：《环境科学学报》2011年第12期2707-2713,共7页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金重点项目(No.40830744);上海市重点学科项目(No.S30109)~~

摘　　要：为了解路桥地区河流沉积物中多氯萘(PCNs)的污染水平、空间分布特征及来源,用GC-NCI-MS法测定了该区38个沉积物样品中PCNs的含量.结果表明,所有沉积物样品中∑PCNs在0.13～350.00ng·g-1之间,平均值为17.30ng·g-1.多数样品中主要的同族体为tri-CNs,占10.2%～85.0%(平均值为55.3%),其次是tetra-CNs和penta-CNs,分别占3.9%～50.6%和2.4%～59.6%.聚类分析和燃烧指示物分析表明,大部分采样点主要受HW1000污染,少部分采样点分别受HW1013、Ar1016和HW1014、Ar1232、1248、1254污染,6个采样点电子废物燃烧对其有贡献.与其它研究相比,研究区域内沉积物中PCNs污染处于中低水平,主要表现为点源污染,值得关注.毒性分析显示,研究区域内PCNs毒性当量(TEQs)低于其它的研究区域.In order to understand the contents,spatial distribution and sources of polychlorinated naphthalenes（PCNs） in the river sediments from Luqiao,the concentrations of PCNs in 38 sediment samples were analyzed by GC-NCI-MS.The total concentrations of PCNs（∑PCNs） in all samples ranged from 0.13 to 350.00 ng · g^-1,with a mean of 17.30 ng · g^-1.Tri-CNs was the most predominant homologue in most of the samples,accounting for 10.2%～85.0% with a mean of 55.3%,followed by tetra-CNs and penta-CNs accounting for 3.9%～50.6% and 2.4%～59.6%,respectively.Cluster analysis and combustion marker analysis showed that most of the sampling sites were mainly polluted by HW1000,and a small number of sites were mainly polluted by HW1013,Ar1016 and HW1014,Ar1232,1248 and 1254,respectively.Among them,6 sites were affected by e-waste burning process.Compared to other studies,the PCNs concentrations in the present study were at a lower-middle level.However,it should be noted that a few of sampling sites were characterized by point source pollution.The toxic assessment suggested that the TEQs of PCNs in Luqiao were lower than those in other areas.

关 键 词：电子废物 沉积物 多氯萘 含量 分布 来源 

分 类 号：X131[环境科学与工程—环境科学]