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Colloid-borne forms of tetravalent actinides: A brief review

机译:胶体形式的四价borne系元素:简要综述

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摘要

Tetravalent actinides, An(Ⅳ), are usually assumed to be little mobile in near-neutral environmental waters because of their low solubility. However, there are certain geochemical scenarios during which mobilization of An(Ⅳ) in a colloid-borne (waterborne) form cannot be ruled out A compilation of colloid-borne forms of tetravalent actinides described so far for laboratory experiments together with several examples of An(Ⅳ) colloids observed in field experiments and real-world scenarios are given. They are intended to be a knowledge base and a tool for those who have to interpret acn'nide behavior under environmental conditions. Synthetic colloids containing structural An(Ⅳ) and synthetic colloids carrying adsorbed An(Ⅳ) are considered. Their behavior is compared with the behavior of An(Ⅳ) colloids observed after the intentional or unintentional release of actinides into the environment A list of knowledge gaps as to the behavior of An(Ⅳ) colloids is provided and items which need further research are highlighted.
机译:通常认为四价act系元素An(Ⅳ)由于其低溶解度而在接近中性的环境水中几乎不活动。但是,在某些地球化学情况下,不能排除以胶体形式(水基)形式迁移An(Ⅳ)的过程。迄今为止,用于实验室实验的四价act系元素的胶体形式的汇编以及一些An实例(Ⅳ)给出了在野外实验和真实情况下观察到的胶体。它们旨在成为那些必须在环境条件下解释种族行为的人的知识库和工具。考虑到具有结构An(Ⅳ)的合成胶体和带有吸附的An(Ⅳ)的合成胶体。将其行为与有意或无意将act系元素释放到环境后观察到的An(Ⅳ)胶体的行为进行了比较。提供了有关An(Ⅳ)胶体的行为的知识空白列表,并突出了需要进一步研究的项目。

著录项

  • 来源
    《Journal of Contaminant Hydrology》 |2014年第2期|87-105|共19页
  • 作者单位

    Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, P.O. Box 51 01 19, D-01314 Dresden, Germany;

    Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, P.O. Box 51 01 19, D-01314 Dresden, Germany;

  • 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

    Tetravalent actinides; Groundwater; Colloids; Nanoparticles; Subsurface transport;

    机译:四价act系元素;地下水;胶体;纳米颗粒;地下运输;

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