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首页> 外文期刊>Environmental Science & Technology >Comment on 'Competitive Adsorption of Cd(Ⅱ), Cr(Ⅵ), and Pb(Ⅱ) onto Nanomaghemite: A Spectroscopic and Modeling Approach'
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Comment on 'Competitive Adsorption of Cd(Ⅱ), Cr(Ⅵ), and Pb(Ⅱ) onto Nanomaghemite: A Spectroscopic and Modeling Approach'

机译:评述“ Cd(Ⅱ),Cr(Ⅵ)和Pb(Ⅱ)在纳米磁赤铁矿上的竞争吸附:一种光谱学和建模方法”

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摘要

We have read this work with great interest and would like to raise a few scientific questions related to a possible modification of surface reactivity of maghemite due to the presence of quartz. More precisely, we acid a data on the dissolution of the quartz sample (Min-U-Sil 5) used by the authors, which proofs possible implications on the uptake properties of the iron oxide with respect to the adsorbing ions. We aim at a more comprehensive understanding of the sorption mechanisms involved in such complex mineral assemblages. The comparison of the intrinsic reactivity of coating phases in Fe-Si mineral assemblages vs pure individual phases should take into account the solubility of SiO_2 particles and the concomitant release of silicate in solution. Such silicate release (from the dissolution of the quartz) and subsequent adsorption on Fe-phases in coated-sand systems can affect the fate and transport of organic and inorganic ligands.
机译:我们非常感兴趣地阅读了这项工作,并想提出一些与石英存在有关的磁赤铁矿表面反应性可能改变有关的科学问题。更准确地说,我们对作者使用的石英样品(Min-U-Sil 5)的溶出度数据进行了酸化,这证明了氧化铁相对于吸附离子的吸收特性可能存在影响。我们旨在更全面地了解这种复杂的矿物组合所涉及的吸附机理。 Fe-Si矿物组合中的涂层相与纯单个相的固有反应性的比较应考虑SiO_2颗粒的溶解度和溶液中硅酸盐的伴随释放。这种硅酸盐的释放(来自石英的溶解)以及随后在覆膜砂系统中的铁相吸附会影响有机和无机配体的命运和运输。

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  • 来源
    《Environmental Science & Technology》 |2016年第3期|1632-1633|共2页
  • 作者单位

    Ecole Nationale Superieure de Chimie de Rennes, CNRS, UMR 6226, 11, Allee de Beaulieu CS 50837, 35708 Rennes Cedex 7, France;

    Institut fur Nukleare Entsorgung (INE), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany;

    Institut fur Nukleare Entsorgung (INE), Karlsruhe Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany;

    Ecole Nationale Superieure de Chimie de Rennes, CNRS, UMR 6226, 11, Allee de Beaulieu CS 50837, 35708 Rennes Cedex 7, France;

  • 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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  • 正文语种 eng
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