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首页> 外文期刊>Environmental Science & Technology >Sequestration of Zinc from Zinc Oxide Nanoparticles and Life Cycle Effects in the Sediment Dweller Amphipod Corophium volutator
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Sequestration of Zinc from Zinc Oxide Nanoparticles and Life Cycle Effects in the Sediment Dweller Amphipod Corophium volutator

机译：氧化锌纳米颗粒中的锌螯合及其在沉积物两栖动物角膜腐皮器中的生命周期效应

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摘要

We studied the effects of ZnO nanoparticles [ZnO NPs, primary particle size 35 ± 10 nm (circular diameter, TEM)], bulk [160 ± 81 nm (circular diameter, TEM)], and Zn ions (from ZnCl_2) on mortality, growth, and reproductive endpoints in the sediment dwelling marine amphipod Corophium volutator over a complete lifecyde (100 days). ZnO NPs were characterized by size, aggregation, morphology, dissolution, and surface properties. ZnO NPs underwent aggregation and partial dissolution in the seawater exposure medium, resulting in a size distribution that ranged in size from discrete nanoparticles to the largest aggregate of several micrometers. Exposure via water to all forms of zinc in the range of 0.2- 1.0 mg L~(-1) delayed growth and affected the reproductive outcome of the exposed populations. STEM-EDX analysis was used to characterize insoluble zinc precipitates (sphaerites) of high sulfur content, which accumulated in the hepatopancreas following exposures. The elemental composition of the sphaerites did not differ for ZnO NP, Zn2*, and bulk ZnO exposed organisms. These results provide an illustration of the comparable toxicity of Zn in bulk, soluble, and nanoscale forms on critical lifecycle parameters in a sediment dwelling organism.
机译：我们研究了ZnO纳米颗粒[ZnO NPs，初级粒径35±10 nm（圆直径，TEM）]，体积[160±81 nm（圆直径，TEM）]和Zn离子（来自ZnCl_2）对死亡率的影响，完整生命周期（100天）内沉积在海洋两栖类双足纲Cor虫体内的生长和生殖终点。 ZnO NPs的大小，聚集，形态，溶解度和表面性质对其进行了表征。 ZnO NP在海水暴露介质中发生聚集和部分溶解，从而导致大小分布范围从离散的纳米颗粒到几微米的最大聚集体。经由水暴露于0.2- 1.0 mg L〜（-1）范围内的所有形式的锌会延迟生长，并影响所暴露种群的生殖结果。 STEM-EDX分析用于表征高硫含量的不溶性锌沉淀物（闪锌矿），这些沉淀物在暴露后会累积在肝胰腺中。对于ZnO NP，Zn2 *和大量ZnO暴露生物，闪锌矿的元素组成没有差异。这些结果说明了在沉积物生物体内关键生命周期参数上，散装，可溶性和纳米级形式的Zn具有相当的毒性。

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  • 来源
    《Environmental Science & Technology》 |2012年第2期|p.1128-1135|共8页
  • 作者

    Julia Fabrega; Ratna Tantra; Aisha Amer; Bjorn Stolpe; Jordan Tomkins; Tony Fry; Jamie R. Lead; Charles R. Tyler; Tamara S. Galloway;

  • 作者单位

    Biosciences, College of Life and Environmental Sciences, Geoffrey Pope Building, University of Exeter, EX4 4QD, United Kingdom;

    Nanoanalysis Group, National Physical Laboratory, Teddington, Middlesex, TW11 OLW, United Kingdom;

    Biosciences, College of Life and Environmental Sciences, Geoffrey Pope Building, University of Exeter, EX4 4QD, United Kingdom;

    School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom;

    Nanoanalysis Group, National Physical Laboratory, Teddington, Middlesex, TW11 OLW, United Kingdom;

    Nanoanalysis Group, National Physical Laboratory, Teddington, Middlesex, TW11 OLW, United Kingdom;

    School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham, B15 2TT, United Kingdom;

    Biosciences, College of Life and Environmental Sciences, Geoffrey Pope Building, University of Exeter, EX4 4QD, United Kingdom;

    Biosciences, College of Life and Environmental Sciences, Geoffrey Pope Building, University of Exeter, EX4 4QD, United Kingdom;

  • 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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