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

机译：对“纳米铁磁石上Cd（Ⅱ），Cr（Ⅵ）和Pb（Ⅱ）的竞争吸附：一种光谱学和建模方法”评论的回应

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摘要

We appreciate the comments raised by Kamagate et al. concerning the influence of Si species originating from the partial dissolution of quartz (Min-U-Sil 5), and we largely agree with them. The dissolution of the quartz investigated in our study will surely liberate Si(aq) species, which are likely to interact with the nanomaghemite surface during the formation of the Si-coated nanomaghemite we prepared using the protocol by Schwertmann and Cornell. However, we do not know of a protocol that would avoid this artifact, and furthermore, dissolved Si would almost certainly interact with maghemite found in association with quartz in natural systems. Therefore, we believe that our system is representative of natural conditions, although we acknowledge that the extent of aqueous Si liberation and interaction with the maghemite surface would certainly depend on specific solution conditions, especially pH. Ideally, such interactions would be quantified in both the laboratory and natural systems, but in practice, we think that this would be quite difficult to do in an experimental system where quartz grains are the substrate onto which maghemite is precipitated.
机译：我们感谢Kamagate等人提出的意见。关于硅物种对石英（Min-U-Sil 5）部分溶解的影响，我们在很大程度上同意了他们的观点。在我们的研究中研究的石英的溶解肯定会释放出Si（aq）物种，这些物种很可能在我们使用Schwertmann和Cornell的协议制备的涂有Si的纳米磁赤铁矿形成过程中与纳米磁赤铁矿表面相互作用。但是，我们尚不知道可以避免这种伪像的协议，此外，在自然系统中，溶解的硅几乎可以肯定会与与石英结合的磁赤铁矿发生相互作用。因此，我们相信我们的系统代表了自然条件，尽管我们承认水硅的释放程度以及与磁赤铁矿表面的相互作用肯定取决于特定的溶液条件，尤其是pH值。理想情况下，这种相互作用应在实验室和自然系统中都进行定量，但在实践中，我们认为在石英晶为沉淀磁赤铁矿的基质的实验系统中，很难做到这一点。

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  • 来源
    《Environmental Science & Technology》 |2016年第3期|1634-1635|共2页
  • 作者

    Michael Komarek; Carla M. Koretsky; Krishna J. Stephen; Daniel S. Alessi; Vladislav Chrastny;

  • 作者单位

    Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamycka 129, Prague 6 - Suchdol 165 21, Czech Republic;

    Department of Geosciences, Western Michigan University, 1187 Rood Hall, Kalamazoo, Michigan 49008, United States;

    Department of Geosciences, Western Michigan University, 1187 Rood Hall, Kalamazoo, Michigan 49008, United States;

    Department of Earth and Atmospheric Sciences, University of Alberta, 1-26 Earth Sciences Building, Edmonton, Alberta, T6G 2E3, Canada;

    Department of Environmental Geosciences, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamycka 129, Prague 6 - Suchdol 165 21, Czech Republic;

  • 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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