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首页> 外文期刊>Environmental toxicology and chemistry >Patterns of Trace Element Accumulation in Waterfowl Restricted to ImpoundmentsHolding Coal Combustion Waste
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Patterns of Trace Element Accumulation in Waterfowl Restricted to ImpoundmentsHolding Coal Combustion Waste

机译：限制蓄水的水禽中微量元素的积累模式

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摘要

Waterfowl are often exposed to and readily accumulate anthropogenic contaminants when foraging in polluted environments. Settling impoundments containing coal combustion waste (CCW) enriched in trace elements such as arsenic (As), selenium (Se), and mercury (Hg) are often used by free-ranging migratory and resident waterfowl and represent potential sources for contaminant uptake. To assess accumulation of CCW contaminants, we experimentally restricted waterfowl to a CCW-contaminated impoundment and quantified trace element burdens in blood, muscle, and liver tissues over known periods of exposure (between 3 and 92 d). From these data we developed models 1) to predict elemental bioaccumulation with increased exposure time, and 2) to predict muscle/liver burdens based on concentrations in blood as a nondestructive sampling method. Although Hg and As did not bioaccumulate in our waterfowl, we observed an increase in Se concentrations in muscle, liver, and blood tissues over the duration of our experiment. Furthermore, we found that blood may be used as an effective nondestructive sampling alternative to predict muscle and liver tissue concentrations in birds contaminated with Se and As through dietary exposure. These data provide unique insights into accumulation rates of contaminants for waterfowl utilizing habitats contaminated with CCW and demonstrate the efficacy of nonlethal sampling of waterfowl to quantify contaminant exposure. Environ Toxicol Chem 2020;00:1-8. (c) 2020 SETAC
机译：在受污染的环境中觅食时，水禽通常会暴露于人为污染物中并容易积聚。自由放养的迁徙和常驻水禽经常使用含有富含微量元素（例如砷，砷和汞）的燃煤废物（CCW）的沉淀池，它们代表了潜在的污染物吸收源。为了评估CCW污染物的积累，我们在已知的暴露时间段（3到92 d）之间，通过实验将水禽限制在CCW污染的水库中，并定量分析血液，肌肉和肝组织中的痕量元素。根据这些数据，我们开发了模型1）预测暴露时间增加的元素生物蓄积，2）基于血液中的浓度作为无损采样方法预测肌肉/肝脏负担。尽管Hg和As不会在我们的水禽中生物积累，但是我们观察到在整个实验过程中，肌肉，肝脏和血液组织中的Se浓度增加。此外，我们发现血液可以用作有效的非破坏性采样替代品，以通过饮食接触来预测受Se和As污染的鸟类的肌肉和肝脏组织浓度。这些数据提供了利用CCW污染的栖息地对水禽污染物累积速率的独特见解，并展示了非致命性水禽采样量化污染物暴露的功效。环境毒性化学2020; 00：1-8。 （c）2020年SETAC

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  • 来源
    《Environmental toxicology and chemistry》 |2020年第5期|1052-1059|共8页
  • 作者

  • 作者单位

    Univ Georgia Savannah River Ecol Lab Aiken SC 29801 USA|Univ Georgia Warnell Sch Forestry & Nat Resources Athens GA 30602 USA;

    Univ Georgia Savannah River Ecol Lab Aiken SC 29801 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

    Arsenic; Bioaccumulation; Heavy metals; Mercury; Ring-necked ducks; Selenium;

    机译：砷;生物蓄积;重金属;汞;环颈鸭;硒;

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