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环境化学  2015 

DOI:10.7524/j.issn.0254-6108.2014.10.010

Keywords: 电子垃圾,多氯联苯,母乳,婴儿,暴露风险

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Abstract:

本文对浙江省台州市路桥和温岭两个电子垃圾循环区域母乳中多氯联苯(PCBs)污染现状进行了研究.路桥本地人群(n=16)、温岭本地人群(n=27)及在台州居住不足5年的外地人群(n=9)母乳中PCBs的中值浓度分别为195ng·g-1脂重(lw)、138ng·g-1lw和59.1ng·g-1lw.路桥和温岭人群母乳中PCBs浓度显著高于在台州居住不足5年的外地人群(P<0.001),也远高于浙江省及中国背景区域水平.CB-118、CB-153和CB-138是台州母乳中最主要的3种同类物,与台州膳食样本中PCBs的指纹特征类似.路桥本地人群婴儿通过饮用母乳日摄入的PCBs量(EDI)(1024ng·kg-1bw·d-1)略高于加拿大卫生部建议的成人对PCBs日耐受量(1000ng·kg-1bw·d-1),温岭本地人群乳儿的EDI值(491ng·kg-1bw·d-1)远高于我国12个省市EDI的均值(54.6ng·kg-1bw·d-1),表明台州本地人群母乳喂养的婴儿处于较高的PCBs暴露风险中.母乳中PCBs浓度与母亲年龄、孕前体重指数、产次和婴儿的体重及性别无显著相关性.

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