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环境化学  2015 

西沙永兴岛海域鱼体中non-PBDE类卤系阻燃剂的分布特征及人体暴露评估

Keywords: ,卤系阻燃剂,生物富集,永兴岛

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Abstract:

在西沙永兴岛海域采集了鲍氏绿鹦嘴鱼、条纹胡椒鲷、太平洋裸颊鲷和黑边石斑鱼4种鱼类,分析研究了鱼样肌肉组织中非多溴联苯醚(non-PBDE)类卤系阻燃剂的含量、组成并对其人体暴露风险进行了评估.结果表明,十溴二苯乙烷(DBDPE)、德克隆(DP)、1,2-(2,4,6-三溴苯氧基)乙烷(BTBPE)、五溴甲苯(PBT)、六溴苯(HBB)、1,4-二(二溴甲基)苯(pTBX)、六溴联苯(PBB153)等non-PBDE类卤系阻燃剂在永兴岛海域鱼体中均被检出,其浓度变化范围分别为17.2—137.1、21.1—88.8、nd—8.9、nd—4.3、nd—6.8、nd—15.9、nd—6.2pg·g-1ww(湿重).条纹胡椒鲷、太平洋裸颊鲷和黑边石斑鱼3种肉食性鱼类中DBDPE和DP含量均显著高于草食性鱼类鲍氏绿鹦嘴鱼.DBDPE和DP是鱼体中最主要的non-PBDE类卤系阻燃剂,两者的平均贡献值达到了86%以上.人体食用永兴岛海鱼对non-PBDE类卤系阻燃剂的每日摄入量为3.4—8.6ng·d-1,低于已有的相关报道值,食用永兴岛鱼类处于相对较低的暴露风险.

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