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首页> 外文期刊>Environmental toxicology and chemistry >THE EFFECTS OF HUMIC ACID ON THE UPTAKE AND DEPURATION OF FULLERENE AQUEOUS SUSPENSIONS IN TWO AQUATIC ORGANISMS
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THE EFFECTS OF HUMIC ACID ON THE UPTAKE AND DEPURATION OF FULLERENE AQUEOUS SUSPENSIONS IN TWO AQUATIC ORGANISMS

机译:腐殖酸对两种水生物中富勒烯水悬浮液的吸收和释放的影响

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摘要

The authors investigated the uptake and depuration of fullerene aqueous suspensions (nC_(60)) in 2 aquatic organisms: Daphnia magna and zebrafish. The effects of humic acid were examined to elucidate its possible mechanisms in the aquatic environment. The uptake was concentration-dependent in both organisms, and the maximum uptake concentration of nC_(60) in Daphnia (2268 ± 158 mg/kg) was approximately 1 order of magnitude higher than that in zebrafish (222 ±30 mg/kg) because of the larger gut volume ratio to the mass of Daphnia or its high uptake efficiency. Humic acid reduced the uptake of nC_(60) in Daphnia and zebrafish as a result of the size effect and the polarity alternation of nC_(60)-The depuration patterns were rapid for Daphnia and slow for zebrafish, and the differences were most likely the result of different water exchange frequencies between organisms. The remaining nC_(60) percentages were approximately 20% for Daphnia and 30% for zebrafish after 48-h depuration, suggesting that a large nC_(60) burden still existed for both aquatic organisms and that there is a need for further studies on the potential for trophic transfer.
机译:作者研究了富勒烯水悬浮液(nC_(60))在两种水生生物:水蚤和斑马鱼中的摄取和净化。检查了腐殖酸的作用以阐明其在水生环境中的可能机制。两种生物的吸收均取决于浓度,水蚤(2268±158 mg / kg)中nC_(60)的最大吸收浓度比斑马鱼(222±30 mg / kg)高约1个数量级。肠体积比对水蚤质量的影响或其吸收效率高。腐殖酸由于大小效应和nC_(60)的极性交替而降低了水蚤和斑马鱼对nC_(60)的吸收-水蚤的净化方式对于水蚤来说是快速的而对于斑马鱼来说是缓慢的,差异很可能是生物之间水交换频率不同的结果。净化48小时后,水蚤的其余nC_(60)百分比大约为20%,斑马鱼大约为30%,这表明两种水生生物仍然存在较大的nC_(60)负担,因此有必要进一步研究营养传递的潜力。

著录项

  • 来源
    《Environmental toxicology and chemistry》 |2014年第5期|1090-1097|共8页
  • 作者单位

    State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China;

    State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China,Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University,Shanghai, China;

    State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China;

    State Key Laboratory of Pollution Control and Resources Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, China,Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University,Shanghai, China;

  • 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

    Emerging pollutant; Bioconcentration; Environmental transport;

    机译:新兴污染物;生物浓缩;环境运输;

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