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首页> 外文期刊>Environmental toxicology and chemistry >COMPARING THE EFFECTS OF NANOSILVER SIZE AND COATING VARIATIONS ON BIOAVAILABILITY, INTERNALIZATION, AND ELIMINATION, USING LUMBRICULUS VARIEGATUS
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COMPARING THE EFFECTS OF NANOSILVER SIZE AND COATING VARIATIONS ON BIOAVAILABILITY, INTERNALIZATION, AND ELIMINATION, USING LUMBRICULUS VARIEGATUS

机译：使用腰椎间盘突出症比较纳米银和包衣变化对生物利用度，内在化和消除的影响

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摘要

As the production and applications of silver nanoparticles (AgNPs) increase, it is essential to characterize fate and effects in environmental systems. Nanosilver materials may settle from suspension; therefore, the authors' objective was to utilize environmentally relevant bioassays and study the impact, bioaccumulation, tissue distribution, uptake, and depuration of AgNPs on a sediment-dwelling invertebrate, Lumbriculus variegatus. Hydrodynamic diameters of uncoated 30-nm, 80-nm, and 1500-nm AgNP powders and a polyvinyl pyrrolidone (PVP) AgNP suspension were measured utilizing dynamic light scattering in freshwater media (0-280 μS/cm). Aggregation for 30 nm, 80 nm, and 1500 nm silver increased with conductivity but was minimal for PVP silver. Lumbriculus variegatus were exposed to AgNPs or silver nitrate (AgNO_3) spiked into sediment (nominally 100 mg/kg) and water (PVP 30 nm and 70 nm Ag, nominally 5 mg/L). Uptake was assessed through inductively coupled plasma mass spectroscopy (ICP-MS) and hyperspectral imaging. Particle sizes were examined through field flow fractionation-ICP-MS (FFF-ICP-MS) and ICP-MS in single particle mode (SP-ICP-MS). Lumbriculus variegatus were also depurated for 6 h, 8 h, 24 h, and 48 h to determine gut clearance. Bioaccumulation factors of sediment-exposed L. variegatus were similar regardless of particle size or coatings. The FFF-ICP-MS and SP-ICP-MS detected AgNPs for up to 48 h post depuration. The present study provides information on bioaccumulation and interactions of AgNPs within biological systems.
机译：随着银纳米颗粒（AgNPs）的生产和应用的增加，表征环境系统中的命运和影响至关重要。纳米银材料可能会因悬浮而沉淀；因此，作者的目标是利用与环境相关的生物测定方法，研究AgNPs对沉积在沉积物中的无脊椎动物腰椎豆（Lumbriculus variegatus）的影响，生物蓄积，组织分布，吸收和净化。利用在淡水介质中的动态光散射（0-280μS/ cm）测量未涂覆的30nm，80nm和1500nm AgNP粉末和聚乙烯吡咯烷酮（PVP）AgNP悬浮液的流体动力学直径。银在30 nm，80 nm和1500 nm处的聚集随着电导率的增加而增加，但对于PVP银则最小。将百日草（Lumbriculus variegatus）暴露于掺入沉淀物（名义上为100 mg / kg）和水（PVP为30 nm和70 nm Ag，名义上为5 mg / L）的AgNPs或硝酸银（AgNO_3）中。通过电感耦合等离子体质谱（ICP-MS）和高光谱成像评估摄取。通过场流分馏-ICP-MS（FFF-ICP-MS）和ICP-MS以单颗粒模式（SP-ICP-MS）检查粒径。还对紫癜进行了6小时，8小时，24小时和48小时的净化，以测定肠道清除率。沉积物暴露的变异乳杆菌的生物蓄积因子是相似的，而与颗粒大小或覆盖物无关。 FFF-ICP-MS和SP-ICP-MS在净化后长达48小时内检测到AgNPs。本研究提供了有关生物积累和生物系统内AgNPs相互作用的信息。

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  • 来源
    《Environmental toxicology and chemistry》 |2013年第9期|2069-2077|共9页
  • 作者

    Jessica G. Coleman; Alan J. Kennedy; Anthony J. Bednar; James F. Ranville; Jennifer G. Laird; Ashley R. Harmon; Charolett A. Hayes; Evan P. Gray; Christopher P. Higgins; Guilherme Lotufo; Jeffery A. Steevens;

  • 作者单位

    Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, USA;

    Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, USA;

    Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, USA;

    Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, Colorado, USA;

    Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, USA;

    Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, USA;

    Spec Pro, Vicksburg, Mississippi, USA;

    Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, USA;

    Department of Civil and Environmental Engineering, Colorado School of Mines, Golden, Colorado, USA;

    Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, USA;

    Environmental Laboratory, US Army Engineer Research and Development Center, Vicksburg, Mississippi, 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; Silver; Aquatic; Lumbriculus variegatus; Bioavailability;

    机译：纳米颗粒;银;水;百日草生物利用度;

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