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台州水系表层沉积物典型POPs污染现状及生态风险

张 烃 陈社军 李 楠 刘爱民 郑 森 麦碧娴 黄业茹

张 烃, 陈社军, 李 楠, 刘爱民, 郑 森, 麦碧娴, 黄业茹. 台州水系表层沉积物典型POPs污染现状及生态风险[J]. 环境科学研究, 2014, 27(12): 1540-1548.
引用本文: 张 烃, 陈社军, 李 楠, 刘爱民, 郑 森, 麦碧娴, 黄业茹. 台州水系表层沉积物典型POPs污染现状及生态风险[J]. 环境科学研究, 2014, 27(12): 1540-1548.
ZHANG Ting, CHEN She-jun, LI Nan, LIU Ai-min, ZHENG Sen, MAI Bi-xian, HUANG Ye-ru. Occurrence and Ecological Risks of Typical POPs in Surface Sediments from the Taizhou River System[J]. Research of Environmental Sciences, 2014, 27(12): 1540-1548.
Citation: ZHANG Ting, CHEN She-jun, LI Nan, LIU Ai-min, ZHENG Sen, MAI Bi-xian, HUANG Ye-ru. Occurrence and Ecological Risks of Typical POPs in Surface Sediments from the Taizhou River System[J]. Research of Environmental Sciences, 2014, 27(12): 1540-1548.

台州水系表层沉积物典型POPs污染现状及生态风险

基金项目: 国家重点基础研究发展计划(973)项目(2009CB1602);国家环境保护公益性行业科研专项(201109001)

Occurrence and Ecological Risks of Typical POPs in Surface Sediments from the Taizhou River System

  • 摘要: 为探讨典型废物拆解地工业结构转型期环境POPs(persistent organic pollutants,持久性有机污染物)污染特征变化情况,使用气相色谱/高分辨质谱法测定了台州水系表层沉积物中PCDD/Fs(二英类)、dl-PCBs(共平面多氯联苯)和PBDEs(多溴联苯醚),并利用主因子分析等手段分析了其来源. 结果表明,台州椒江和金清闸海湾2387-PCDD/Fs毒性当量浓度(以WHO2005-TEQ计,下同)中位值分别为3.18和1.91 ng/kg,dl-PCBs毒性当量浓度分别为0.26和0.62 ng/kg,w(∑PBDEs)分别为22.5和19.7 μg/kg,处于我国和全球河流(海湾)表层沉积物POPs污染的中等水平,低于其他电子废物拆解地等严重污染区. 台州河流(海湾)表层沉积物PCDD/Fs主要来源于燃煤,dl-PCBs主要来源于历史上多氯联苯的使用或电子废物拆解活动,PBDEs主要来源于相关阻燃剂的使用和电子废物拆解活动. 位于化工园区排水口的YTZ采样点PCDD/Fs和dl-PCBs的毒性当量浓度分别达到6.54×104和7.84×103 ng/kg,污染可能来源于化工废料加工和再生金属生产,表明台州在工业结构转型期出现的新POPs污染源,应引起重视. 台州部分表层沉积物样品中的PCDD/Fs和dl-PCBs的总毒性当量浓度超过美国和加拿大的沉积物质量指导值,存在一定的生态风险.

     

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出版历程
  • 收稿日期:  2014-03-10
  • 修回日期:  2014-06-04
  • 刊出日期:  2014-12-25

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