典型电子废物集中处置场地及周边土壤中多溴联苯醚的污染特征

摘要

Concentrations of 8 kinds of PBDE congeners ( BDE - 28, BDE - 47, BDE - 99, BDE - 100, BDE - 153,BDE - 154, BDE - 183, BDE -209) in soils of a typical e-waste disposal site and its surrounding area in Taizhou, Zhejiang were determined with the accelerated solvent extraction (ASE) - gel permeation chromatography technology (GPC)-GC - MS method, to study concentration level, composition characteristics and vertical distribution of the pollutants in the area.Results show that BDE - 209 was the major pollutant, accounting for 90％ of the content of the total 8 PBDEs in the soil.The total concentration of the pollutants in soil was higher in the site per se than in its surrounding area, being O.625 and 0.209 mg · kg-1 , respectively.PBDE concentration decreased with the distance from the center of the disposal site.%采用快速溶剂萃取-凝胶净化-气相色谱质谱法(GC-MS)测定了浙江省台州市某典型电子废物集中处置场地及周边土壤中多溴联苯醚(poly brominated diphenyl ethers,PBDEs)浓度,研究了8种PBDEs(BDE-28、BDE-47、BDE-99、BDE-100、BDE-153、BDE-154、BDE-183、BDE-209)的浓度水平、组成特征和垂直分布规律.结果表明,BDE-209污染与其他几种PBDEs污染之间具有很大的关联性;BDE-209是主要污染物,占8种PBDEs总含量的90%左右;处置场地内8种PBDEs的浓度高于其周边土壤,其平均质量含量分别为0.625和0.209 mg·kg-1;随着与场地集中区域中心距离的增加,PBDEs总含量呈逐渐下降趋势.