Xing Guan Hua, Chan Janet Kit Yan, Leung Anna Oi Wah, Wu Sheng Chun, Wong M H
Croucher Institute for Environmental Sciences, and Department of Biology, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China.
Environ Int. 2009 Jan;35(1):76-82. doi: 10.1016/j.envint.2008.07.025. Epub 2008 Sep 19.
PCB levels in fish (collected from local rivers), atmosphere and human milk samples have been studied to determine the exposure levels of PCBs for local residents and e-waste workers in Guiyu, a major electronic waste scrapping center in China. The source appointment and correlation analyses showed that homologue composition of PCBs in 7 species of fish were consistent and similar to commercial PCBs Aroclor 1248. PCB levels in air surrounding the open burning site were significantly higher than those in residential area. Inhalation exposure contributed 27% and 93% to the total body loadings (the sum of dietary and inhalation exposure) of the local residents, and e-waste workers engaged in open burning respectively. Total PCB concentrations in human milk ranged from N.D. to 57.6 ng/g lipid, with an average of 9.50 ng/g lipid. The present results indicated that commercial PCBs derived from e-waste recycling are major sources of PCBs accumulating in different environmental media, leading to the accumulation of high chlorinated biphenyls in human beings.
对从当地河流采集的鱼类、大气和母乳样本中的多氯联苯（PCB）水平进行了研究，以确定中国主要电子垃圾拆解中心贵屿当地居民和电子垃圾工人的多氯联苯暴露水平。来源鉴定和相关性分析表明，7种鱼类中多氯联苯的同系物组成一致，且与商用多氯联苯Aroclor 1248相似。露天焚烧场地周围空气中的多氯联苯水平显著高于居民区。吸入暴露分别占当地居民和从事露天焚烧的电子垃圾工人全身负荷（饮食和吸入暴露之和）的27%和93%。母乳中多氯联苯的总浓度范围为未检出至57.6纳克/克脂质，平均为9.50纳克/克脂质。目前的结果表明，电子垃圾回收产生的商用多氯联苯是不同环境介质中多氯联苯积累的主要来源，导致高氯代联苯在人体内的积累。
