Persistent organic pollutants in fish tissue in the mid-continental great rivers of the United States
Persistent organic pollutants in fish tissue in the mid-continental great rivers of the United States
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DOI：
10.1016/j.scitotenv.2009.11.040
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发表时间：
2010-02-01
影响因子：
9.8
通讯作者：
Bolgrien, David W.
中科院分区：
文献类型：
--
作者：
Blocksom, Karen A.;Walters, David M.;Bolgrien, David W.
美国中部的大河（密西西比河上游、密苏里河和俄亥俄河）是宝贵的经济和文化资源，但直到最近，它们的生态状况还没有得到很好的量化。 2004-2005年，作为大河生态系统环境监测和评估计划（EMAP-GRE）的一部分，我们测量了整条鱼中遗留的有机氯（OC）（农药和多氯联苯，PCB）和新兴化合物（多溴二苯醚，PBDE），以估计人类和野生动物因食用鱼类而暴露的风险。 PCB、PBDE。所有河流的大多数样品中都检测到了氯丹、狄氏剂和二氯苯三氯乙烷 (DDT)，俄亥俄河的大多数样品中都检测到了六氯苯。俄亥俄河的浓度最高，其次是密西西比河和密苏里河。狄氏剂和多氯联苯对人类构成的风险最大。它们的浓度分别超过了 27-54% 和 16-98% 河流公里的人类癌症风险筛查值。 11-96% 的河流公里数中氯丹超出了翠鸟的野生动物风险值。密苏里河和俄亥俄河的大型鱼类中 PBDE 浓度最高（平均>1000 ng g(-1) 脂质），其中同类物 47 最为普遍。 OC 和 PBDE 浓度与鱼的大小、脂质含量、营养类别和距离城市地区的距离呈正相关。尽管暴露风险似乎更加局部化且范围有限，但受有机污染物污染的鱼类在各大河流中普遍存在。作为生态状况的一项指标，鱼类组织污染有助于对美国大河生态系统的总体评估 由 Elsevier B.V. 出版
Great rivers of the central United States (Upper Mississippi, Missouri, and Ohio rivers) are valuable economic and cultural resources, yet until recently their ecological condition has not been well quantified. In 2004-2005, as part of the Environmental Monitoring and Assessment Program for Great River Ecosystems (EMAP-GRE), we measured legacy organochlorines (OCs) (pesticides and polychlorinated biphenyls, PCBs) and emerging compounds (polybrominated diphenyl ethers, PBDEs) in whole fish to estimate human and wildlife exposure risks from fish consumption. PCBs, PBDEs. chlordane, dieldrin and dichlorocliphenyltrichloroethane (DDT) were detected in most samples across all rivers, and hexachlorobenzene was detected in most Ohio River samples. Concentrations were highest in the Ohio River, followed by the Mississippi and Missouri Rivers, respectively. Dieldrin and PCBs posed the greatest risk to humans. Their concentrations exceeded human screening values for cancer risk in 27-54% and 16-98% of river km, respectively. Chlordane exceeded wildlife risk values for kingfisher in 11-96% of river km. PBDE concentrations were highest in large fish in the Missouri and Ohio Rivers (mean>1000 ng g(-1) lipid), with congener 47 most prevalent. OC and PBDE concentrations were positively related to fish size, lipid content, trophic guild, and proximity to urban areas. Contamination of fishes by OCs is widespread among great rivers, although exposure risks appear to be more localized and limited in scope. As an indicator of ecological condition, fish tissue contamination contributes to the overall assessment of great river ecosystems in the U.S. Published by Elsevier B.V.