海洋环境保护

广州市食用鱼体内PCBs和DDTs的残留水平及食用风险评估

  • 郝青 ,
  • 孙毓鑫 ,
  • 徐向荣 ,
  • 罗孝俊 ,
  • 王帅龙 ,
  • 张再旺 ,
  • 麦碧娴
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  • 1. 中国科学院南海海洋研究所热带海洋生物资源与生态重点实验室, 广东 广州 510301; 2. 中国科学院广州地球化学研究所有机地球化学国家重点实验室, 广东 广州 510640; 3. 中国科学院大学, 北京 100049
作者简介:郝青(1986~), 女, 河北省邢台市人, 博士研究生, 从事有机污染物的环境地球化学行为研究。E-mail: haoqing@scsio.ac.cn

收稿日期: 2013-12-02

  修回日期: 2014-03-12

  网络出版日期: 2014-09-29

基金资助

国家自然科学基金项目(51378488); 广东省自然科学基金项目(S2013040016910); 中国科学院百人计划项目; 国家海洋局近岸海域生态环境重点实验室开放基金项目(201307)

Residual levels of PCBs and DDTs in wholesale fish in Guangzhou, China and potential health risks

  • HAO Qing ,
  • SUN Yu-xin ,
  • XU Xiang-rong ,
  • LUO Xiao-jun ,
  • WANG Shuai-long ,
  • ZHANG Zai-wang ,
  • MAI Bi-xian
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  • 1. Key Laboratory of Tropical Marine Bio-resources and Ecology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China

Received date: 2013-12-02

  Revised date: 2014-03-12

  Online published: 2014-09-29

摘要

研究了广州市场7种食用鱼体中多氯联苯(polychlorinated biphenyls, PCBs)和滴滴涕(dichlorodipheny-ltrichloroethane, DDTs)的残留水平、组成特征及其人体饮食暴露风险。结果表明, PCBs和DDTs在广州食用鱼体中普遍检出, 其浓度范围分别为71~1488和695~38044pg·g-1(湿重)。鱼体中PCBs和DDTs浓度均与脂肪含量存在极显著的正相关关系, 表明高的脂肪含量有利于鱼体中PCBs和DDTs的富集。不同食性鱼体间PCBs和DDTs含量存在显著差异(p<0.001)。鱼体中PCBs主要单体为PCB 28和PCB 153, DDTs的主要成分为2,2-双(p-氯苯基)-1,1-二氯乙烯(p,p′-DDE)和2,2-双(p-氯苯基)-1,1-二氯乙烷(p,p′-DDD)。81.3%的鱼样中(DDE+DDD)/∑DDTs比值大于0.5, 表明鱼体内DDTs主要是由历史残留所致。居民摄食广州市场鱼类对PCBs和DDTs的每日暴露量分别为1.93~71.9和23.0~1875.6ng·d-1

本文引用格式

郝青 , 孙毓鑫 , 徐向荣 , 罗孝俊 , 王帅龙 , 张再旺 , 麦碧娴 . 广州市食用鱼体内PCBs和DDTs的残留水平及食用风险评估[J]. 热带海洋学报, 2014 , 33(5) : 84 -91 . DOI: 10.11978/j.issn.1009-5470.2014.05.011

Abstract

Residual levels and composition profiles of polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane and its metabolites (DDTs) were determined in seven species of fish at a wholesale fish market in Guangzhou, China. Concentrations of PCBs and DDTs ranged from 71~1488 and 695~38044 pg·g-1 (wet weight), respectively. Significant positive correlations existed between lipid contents in the fish and log normalized concentrations of PCBs and DDTs, implying that high lipid content is conducive to the enrichment of these contaminants. Significant differences in concentrations of PCBs and DDTs were observed in different fish species. PCB 28 and PCB 153 were the predominant congeners of PCBs; and 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethylene, (p,p′-DDE) and 1,1-dichloro-2,2-bis-(p-chlorophenyl)ethane, (p,p′-DDD) were the dominant components of DDTs. We found that 81.3% of samples with values of (DDE+DDD)/∑DDTs larger than 0.5, indicating that DDTs in these fish were mainly derived from historical residue. The estimated daily intakes per person of PCBs and DDTs via fish consumption in Guangzhou were 1.93~71.9 and 23.0~1875.6 ng·d-1, respectively.

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