State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, [corrected] Chinese Academy of Sciences, Guangzhou, China.
Environ Toxicol Chem. 2011 Dec;30(12):2688-96. doi: 10.1002/etc.668. Epub 2011 Oct 12.
Polybrominated diphenyl ethers (PBDEs) were determined in 60 surface soils from two e-waste recycling sites (Qingyuan and Guiyu, China) and their surrounding areas to assess the extent and influence of PBDEs from e-waste recycling sites on the surrounding areas. A total of 32 surface soils from industrial areas in South China were also investigated for comparison. The mean concentrations of total PBDEs in the e-waste recycling sites of Guiyu and Qingyuan were 2,909 and 3,230 ng/g dry weight, respectively, whereas the PBDE concentrations decreased dramatically (1-2 orders of magnitude) with increasing distance from the recycling site, suggesting that the e-waste recycling activities were the major source of PBDEs in the surrounding areas. Decabromodiphenyl ethers accounted for 77.0 to 85.8% of total PBDEs in e-waste recycling areas, whereas it accounted for 90.2% in industrial areas. Principal component analysis showed that the major source of PBDEs in e-waste recycling areas were a combination of penta-, octa-, and deca-BDE commercial formulations, whereas deca-BDE commercial formulations were the major source of PBDE congeners in industrial areas. The inventories of PBDEs gave preliminary estimates of 6.22 tons and 13.4 tons for the e-waste recycling areas and industrial areas. The results suggested that significantly higher PBDEs in the e-waste recycling sites have already affected surrounding areas negatively within a relatively large distance. Because of the environmental persistence, bioaccumulation, and toxicity of PBDEs, improving the recycling techniques employed at such facilities and developing e-waste management policies are necessary.
多溴二苯醚（PBDEs）在来自中国两个电子废物回收地（清远和贵屿）及其周边地区的 60 个表层土壤中被测定，以评估电子废物回收地对周边地区的多溴二苯醚的影响和程度。同时，还对来自华南工业地区的 32 个表层土壤进行了调查作为比较。贵屿和清远电子废物回收地的多溴二苯醚总浓度分别为 2909 和 3230ng/g 干重，而多溴二苯醚浓度随着距回收地距离的增加而显著降低（1-2 个数量级），这表明电子废物回收活动是周边地区多溴二苯醚的主要来源。十溴二苯醚占电子废物回收地多溴二苯醚总量的 77.0%至 85.8%，而在工业地区则占 90.2%。主成分分析表明，电子废物回收地多溴二苯醚的主要来源是五溴、八溴和十溴商用配方的组合，而十溴商用配方则是工业地区多溴二苯醚同系物的主要来源。多溴二苯醚的清单初步估计电子废物回收区为 6.22 吨，工业地区为 13.4 吨。结果表明，电子废物回收地的多溴二苯醚含量较高，已经在相对较大的范围内对周边地区产生了负面影响。由于多溴二苯醚具有环境持久性、生物累积性和毒性，因此有必要改进这些设施中采用的回收技术，并制定电子废物管理政策。
