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首页> 外文期刊>Environmental Science & Technology >Age-Corrected Trends and Toxic Equivalence of PCDD/F and CP- PCBs in Lake Trout and Walleye from the Great Lakes: 2004-2014
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Age-Corrected Trends and Toxic Equivalence of PCDD/F and CP- PCBs in Lake Trout and Walleye from the Great Lakes: 2004-2014

机译：2004-2014年大湖鳟鱼和角膜白斑的年龄校正趋势和PCDD / F和CP-PCBs的毒性当量

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src="http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/esthag/2018/esthag.2018.52.issue-2/acs.est.7b05568/20180111/images/medium/es-2017-05568p_0007.gif">Our research reports polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs), and coplanar polychlorinated biphenyls (CP-PCBs) concentrations and age-corrected trends for lake trout and walleye in the Great Lakes over the 2004–2014 period. We determined that age–contaminant corrections are required to accurately report contaminant trends due to significant lake trout age structure changes. The age-trend model (ATM) described here uses a lake-specific age–contaminant regression to mitigate the effect of a fluctuating lake trout age structure to directly improve the log–linear regression model. ATM results indicate that half-life (t1/2) and percent decreases for PCDD/Fs, CP-PCBs, and toxic equivalence (TEQ) (average −56 to 70%) were fairly uniform and consistent across the Great Lakes over the 2004–2014 period. The vast majority of TEQ associated with all Great Lakes lake trout and walleye samples is due to the nonortho CP-PCBs (average = 79%) as compared with PCDD/Fs (average = 21%). On average, CP-PCB_126 individually accounted for over 95% of the total CP-PCB TEQ. A retrospective analysis (1977–2014) of 2378-TCDF and 2378-TCDD raw concentrations in Lake Ontario lake trout revealed decreases of 94% and 96%, respectively. Tissue residue guidelines for wildlife protection based on lake trout and walleye total TEQ were uniformly exceeded in all the Great Lakes.
机译：src =“ http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/esthag/2018/esthag.2018.52.issue-2/acs.est.7b05568/20180111/images/medium /es-2017-05568p_0007.gif“>我们的研究报告表明，多氯联苯-二苯并二恶英（PCDDs），多氯联苯并呋喃（PCDF）和共平面多氯联苯（CP-PCBs）的浓度和年龄校正2004-2014年期间大湖中鳟鱼和角膜白斑的趋势。我们确定需要进行年龄污染物校正，以准确报告由于鳟鱼年龄结构发生重大变化而导致的污染物趋势。这里描述的年龄趋势模型（ATM）使用特定于湖泊的年龄污染物回归来减轻波动的湖鳟年龄结构的影响，从而直接改善对数线性回归模型。 ATM结果表明，PCDD / F，CP-PCB和毒性当量（TEQ）的半衰期（ t 1/2 ）和百分比降低（平均-56至在2004年至2014年期间，整个大湖地区有70％的人是相当统一和一致的。与五大湖所有鳟鱼和角膜白斑样本相关的TEQ的绝大部分归因于非正交CP-PCB（平均值= 79％），而PCDD / Fs（平均值= 21％）。平均而言，CP-PCB_126单独占CP-PCB TEQ总数的95％以上。对安大略湖鳟鱼中2378-TCDF和2378-TCDD原始浓度的回顾性分析（1977-2014年）显示，分别降低了94％和96％。在所有大湖地区，均普遍超过了基于湖鳟鱼和角膜白斑总TEQ的野生生物保护组织残留准则。

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  • 来源
    《Environmental Science & Technology》 |2018年第2期|712-721|共10页
  • 作者

    James J. Pagano; Andrew J. Garner; Daryl J. McGoldrick; Bernard S. Crimmins; Philip K. Hopke; Michael S. Milligan; Thomas M. Holsen;

  • 作者单位

    Environmental Research Center, Department of Chemistry, State University of New York at Oswego, Oswego, New York 13126, United States;

    Environmental Research Center, Department of Chemistry, State University of New York at Oswego, Oswego, New York 13126, United States;

    Water Science and Technology Directorate, Environment and Climate Change Canada, Burlington, Ontario L7R 4A6, Canada;

    Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York 13699, United States;

    Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York 13699, United States;

    Department of Chemistry, State University of New York at Fredonia, Fredonia, New York 14063, United States;

    Department of Civil and Environmental Engineering, Clarkson University, Potsdam, New York 13699, United States;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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