电子废物拆解区农业土壤中多溴二苯醚的分布与来源  

Distribution and possible sources of PBDEs in agricultural soils from an electronic waste recycling area

作　　者：王学彤[1] 王飞[1] 贾金盼[1] 李元成[1] 孙阳昭[2] 吴明红[1] 盛国英[3] 傅家谟[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,广东广州510640

出　　处：《中国环境科学》2010年第12期1664-1669,共6页China Environmental Science

基　　金：国家自然基金资助项目(40830744);国家科技支撑计划项目(2008BAC32B03;2009BAA24B04);上海市重点学科(S30109)

摘　　要：用GC-NCI-MS测定了浙江台州路桥表层农业土壤中41种多溴二苯醚(PBDEs)的含量,并对其分布及来源进行了分析.结果表明:所有样品中Σ41PBDEs的含量为0.193～91.0ng/g,平均值为8.96ng/g,其中BDE209的含量为0.0452～61.5ng/g,平均值为5.41ng/g.在多数样品中十溴BDE及九溴BDEs是主要的同族体,四溴和七溴BDEs同族体次之.同族体组成特征和聚类分析表明,多数采样点主要受到deca-BDE工业品的污染,另有一些采样点受到octa-BDE和deca-BDE工业品的污染,个别采样点主要受到penta-BDE工业品污染.与国内外相关研究相比,研究区域内土壤中PBDEs的污染水平较低,但少数采样点受点源污染影响较大.The concentrations of 41 polybrominated diphenyl ethers （PBDEs） in the agricultural soils from Luqiao were analyzed by GC-NCI-MS,and their distribution and possible sources were also investigated. The total concentrations of 41 PBDEs （Σ41PBDEs） in soils ranged from 0.193 to 91.0 ng/g dry weight, with a mean of 8.96 ng/g,and the concentrations of BDE209 were from 0.0452 to 61.5 ng/g dry weight, with a mean of 5.41 ng/g. Deca-BDE and nona-BDEs were the predominant homologues in most of samples, followed by tetra-BDEs and hepta-BDEs. The homologue composition and cluster analysis showed that most of sampling sites were polluted by deca-BDE formulation, and others polluted by octa-BDE and deca-BDE formulations. Comparing with other studies, the levels of PBDEs in the present study were lower, but it should be concerned that a few of sampling sites were highly contaminated.

关 键 词：电子废物 农业土壤 多溴二苯醚 分布 来源 

分 类 号：X131.3[环境科学与工程—环境科学]