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首页> 外文期刊>Environmental toxicology and chemistry >DIETARY- AND TISSUE-BASED EXPOSURE OF BELTED KINGFISHER TO PCDFs AND PCDDs IN THE TITTABAWASSEE RIVER FLOODPLAIN, MIDLAND, MI, USA
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DIETARY- AND TISSUE-BASED EXPOSURE OF BELTED KINGFISHER TO PCDFs AND PCDDs IN THE TITTABAWASSEE RIVER FLOODPLAIN, MIDLAND, MI, USA

机译:在美国密歇根州米德兰的蒂塔巴瓦西河泛滥地区,基于饮食和组织的带状金鱼对PCDF和PCDD的暴露

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摘要

Concentrations of polychlorinated dibenzofurans (PCDFs) and other dioxin-like compounds in soils and sediments of the Tittabawassee River and associated floodplains downstream of Midland, Michigan, USA, are greater than upstream sites. As a result of these concentrations, which are some of the greatest ever reported, a site-specific exposure assessment of belted kingfisher breeding in the assessment area was conducted. To reduce the uncertainty associated with predicting exposure from abiotic matrices, concentrations of residues were quantified in site-specific prey items and in eggs and nestlings of belted kingfisher. Dietary exposure, expressed as the potential average daily dose, based on site-specific concentrations of PCDFs, polychlorinated dibenzo-p-dioxins (PCDDs), and 2,3,7,8-tetrachlorodibenzo-p-dioxin equivalents (TEQ_(WHO-Avian)) m Prev items was consistently greater along the Tittabawassee River than in associated reference areas and further downstream sites in the Saginaw River. Concentrations of PCDD/DFs in eggs and nestlings of belted kingfisher varied among sampling areas, being greater in both eggs and nestlings nesting along the Tittabawassee River compared to those of belted kingfisher from upstream reference areas. Geometric mean concentrations of PCDD/DFs were 130 and 200ng/kg wet weight in eggs and nestlings of belted kingfisher, respectively. These concentrations are the equivalent of 84 and 95 ng TEQ_(WHO-Avian)/ kg. Site-specific biomagnification factors for select PCDD/DF congeners ranged from < 1.0 to 1.8 in belted kingfisher.
机译:在美国密歇根州米德兰下游的Tittabawassee河和相关洪泛区的土壤和沉积物中,多氯二苯并呋喃(PCDF)和其他二恶英类化合物的浓度大于上游地区。由于这些浓度,这是有史以来最大的浓度,因此在评估区内对带状翠鸟养殖进行了特定地点的暴露评估。为了减少与预测来自非生物基质的暴露相关的不确定性,定量分析了特定地点的猎物,带状翠鸟的卵和雏鸟中的残留物浓度。膳食暴露,以潜在的平均日剂量为基础,基于特定浓度的PCDF,多氯二苯并二恶英(PCDDs)和2,3,7,8-四氯二苯并二恶英当量(TEQ_(WHO-禽类)m沿着蒂塔巴瓦湖的河水的前项始终比相关参考地区和萨吉诺河下游的河水多。带状翠鸟蛋和雏鸟中PCDD / DFs的浓度在采样区域之间有所不同,沿着Tittabawassee河筑巢的蛋和雏鸟中的PCDD / DFs含量高于上游参考地区的带状翠鸟。带状翠鸟卵和雏鸟中PCDD / DFs的几何平均浓度分别为湿重130和200ng / kg。这些浓度相当于84和95 ng TEQ_(WHO-禽流感)/ kg。在带状翠鸟中,某些PCDD / DF同系物的特定地点生物放大系数范围从<1.0到1.8。

著录项

  • 来源
    《Environmental toxicology and chemistry》 |2012年第5期|p.1158-1168|共11页
  • 作者单位

    Department of Zoology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA;

    Department of Zoology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Saskatchewan, Canada Department of Biology and Chemistry and State Key Laboratory in Marine Pollution, City University of Hong Kong, Hong Kong, China;

    Department of Zoology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA;

    Department of Animal Science, Michigan State University, East Lansing, Michigan, USA;

    Department of Zoology, Center for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA;

    Department of Animal Science, Michigan State University, East Lansing, Michigan, USA;

    Cardno ENTRIX, Okemos, Michigan, USA;

    Department of Animal Science, Michigan State University, East Lansing, Michigan, USA Cardno ENTRIX, Okemos, Michigan, USA;

    Cardno ENTRIX, Okemos, Michigan, USA;

    Department of Animal Science, Michigan State University, East Lansing, Michigan, USA;

  • 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    avian diet; dioxins and furans; Egg; PCB; bird; bioaccumulation; monitoring food; feeding;

    机译:鸟类饮食二恶英和呋喃;蛋;PCB;鸟;生物蓄积监测食物;馈送;

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