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| 上海市西南郊区表层水体中多氯联苯分布特征与毒性评价 |
| The Distribution Characteristics and Toxicity Assessment of Polychlorinated Biphenyl at Surface Water of Southwest Suburb of Shanghai |
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| DOI： |
| 中文关键词: |
| 英文关键词: |
| 基金项目:上海市闵行区自然科学研究基金资助项目（2010MHZ004） |
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| 中文摘要: |
| 采用GC/MS方法测定了上海市西南郊区7条主要河流13的断面的多氯联苯（PCBs）含量，讨论了PCBs在水体中的含量分布、污染现状、组分特征和毒性当量。共有14种PCBs同系物有不同程度检出，其中五氯联苯含量最高，PCBs质量浓度在143.4 ng/L～201.8 ng/L之间，均值159.1 ng/L，处于中等污染水平。13个检测断面的PCBs对人类和鱼类毒性当量均值分别为1.781 pg/g和<0.084 pg/g。PCB 126对毒性当量的贡献值最大。由于PCBs具有生态累积效应，危害不容忽视。 |
| 英文摘要: |
| The concentration levels of PCBs in thirteen surface water samples of seven main rivers collected at southwest suburb of Shanghai were analyzed by GC/MS. The spatial distribution, pollution level, composition characteristics and toxic equivalency of PCBs were discussed. The results showed that fourteen PCBs congeners were detected in surface water, among which the penta chloinated biphenyls are abundant in all samples. Values of PCBs were in a range of (143.4~201.8)ng/L, with an average value of 159.1ng/L. The content of PCBs in water of Shanghai southwest suburb was on the average pollution level. TEQs of PCBs for human being and fish were 1.781 pg/ g and <0.084 pg/g respectively, and the maximum values were contributed by PCB 126. The potential hazards should not be ignored for their accumulative effect in the environment. |
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