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首页> 外文期刊>Environmental toxicology and chemistry >BIOACCUMULATION AND EFFECTS OF DIFFERENT-SHAPED COPPER OXIDE NANOPARTICLES IN THE DEPOSIT-FEEDING SNAIL POTAMOPYRGUS ANTIPODARUM
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BIOACCUMULATION AND EFFECTS OF DIFFERENT-SHAPED COPPER OXIDE NANOPARTICLES IN THE DEPOSIT-FEEDING SNAIL POTAMOPYRGUS ANTIPODARUM

机译：存款性小穗虾瘟菌中异形铜氧化物纳米颗粒的生物富集及其效应

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摘要

Copper oxide (CuO) nanoparticles (NPs) are among the most widely used engineered NPs and are thus likely to end up in the environment, predominantly in sediments. Copper oxide NPs have been found to be toxic to a variety of (mainly pelagic) organisms, but to differing degrees. In the present study, the influence of CuO NP shape on bioavailability and toxicity in the sediment-dwelling freshwater gastropod Potamopyrgus antipodarum was examined. In 2 separate studies, snails were exposed to either clean sediment or sediment spiked with either aqueous Cu or CuO NPs of different shapes (rods, spheres, or platelets) at 240 μg Cu/g dry weight of sediment (nominal). In neither of the studies was survival found to be related to Cu form (i.e., free ion vs particle) or shape, whereas snail growth was severely influenced by both form and shape. Reproduction was affected (by CuO NP spheres and aqueous Cu) only when estimated as the total number (live plus dead) of juveniles produced per snail per week. Both the aqueous and particulate forms of Cu were available for uptake by snails when mixed into sediment. However, Cu body burden was not directly related to observed effects. The present study stresses the need for both a better understanding of uptake mechanisms and internal distribution pathways of NPs and an assessment of long-term consequences of NP exposure.
机译：氧化铜（CuO）纳米颗粒（NPs）是使用最广泛的工程NPs之一，因此很可能最终出现在环境中，主要在沉积物中。已发现氧化铜NP对多种（主要是远洋性）生物有毒，但程度不同。在本研究中，研究了CuO NP形状对沉积在沉积物中的淡水腹足纲腹足菜Potamopyrgus antipodarum的生物利用度和毒性的影响。在2个单独的研究中，将蜗牛暴露于干净的沉积物中，或以240μgCu / g沉积物干重（标称值）加有不同形状的水性Cu或CuO NP（杆，球或血小板）的沉积物。在这两项研究中，均未发现存活与铜的形态（即游离离子与颗粒的形态）或形状有关，而蜗牛的生长则受到形态和形状的严重影响。仅当以每只蜗牛每周生产的幼体总数（活的和死亡的）估算时，繁殖受到CuO NP球和Cu水溶液的影响。混合到沉积物中的蜗牛都可以吸收铜的水和颗粒形式。但是，铜的身体负担与观察到的效果没有直接关系。本研究强调既需要更好地了解NPs的摄取机制和内部分布途径，又需要评估NPs暴露的长期后果。

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  • 来源
    《Environmental toxicology and chemistry》 |2014年第9期|1976-1987|共12页
  • 作者

    Tina Ramskov; Henriette Selck; Gary Banta; Superb K. Misra; Deborah Berhanu; Eugenia Valsami-Jones; Valery E. Forbes;

  • 作者单位

    Department of Environmental, Social, and Spatial Change, Roskilde University, Roskilde, Denmark;

    Department of Environmental, Social, and Spatial Change, Roskilde University, Roskilde, Denmark;

    Department of Environmental, Social, and Spatial Change, Roskilde University, Roskilde, Denmark;

    Department of Earth Sciences, Natural History Museum, London, United Kingdom,Department of Geography, Earth & Environmental Sciences, University of Birmingham, Birmingham, United Kingdom;

    Department of Earth Sciences, Natural History Museum, London, United Kingdom;

    Department of Earth Sciences, Natural History Museum, London, United Kingdom,Department of Geography, Earth & Environmental Sciences, University of Birmingham, Birmingham, United Kingdom;

    School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, Nebraska, 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

    Nanoparticles; Sediment exposure; Copper oxide; Bioavailability; Mollusc toxicology;

    机译：纳米颗粒;沉积物暴露;氧化铜生物利用度;软体动物毒理学;

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