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New Microprofiling and Micro Sampling System for Water Saturated Environmental Boundary Layers

机译:用于水饱和环境边界层的新型微轮廓和微采样系统

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摘要

The spatial high resolution of a microprofiling system was combined with the multi element capability of ICP-MS to enable a better understanding of element distributions and related processes across environmental boundary layers. A combination of a microprofiling system with a new micro filtration probe head connected to a pump and a fraction collector (microprofiling and micro sampling system, missy) is presented. This enables for the first time a direct, dynamic, and high resolution automatic sampling of small water volumes (<500 μL) from depth profiles of water saturated matrices (e.g., sediments, soils, biofilms). Different membrane cut-offs are available, and resolutions of a few (matrices with a high physical resistance) to a submillimeter scale (matrices with low physical resistance) can be achieved. In this Article, (ⅰ) the modular setups of two missys are presented; (ⅱ) it is demonstrated how the micro probe heads are manufactured; (ⅲ) background concentrations and recoveries of the system as well as (ⅳ) exemplary results of a sediment water interface are delivered. On the basis of this, potentials, possible sources of errors, and future applications of the new missy are discussed.
机译:微轮廓分析系统的空间高分辨率与ICP-MS的多元素功能相结合,可以更好地理解环境边界层中元素的分布和相关过程。介绍了微轮廓分析系统与连接到泵的新微过滤探头和馏分收集器的组合(微轮廓和微采样系统,小姐)。这首次实现了对来自饱和水基质(如沉积物,土壤,生物膜)的深度剖面的小水量(<500μL)的直接,动态和高分辨率的自动采样。可以使用不同的膜截止值,并且可以达到几毫米(具有较高物理电阻的矩阵)至亚毫米级(具有较低物理电阻的矩阵)的分辨率。在本文中,(ⅰ)介绍了两个missys的模块化设置; (ⅱ)展示了微型探头的制造方式; (ⅲ)系统的背景浓度和回收率,以及(ⅳ)沉积物水界面的示例性结果。在此基础上,讨论了潜在的错误,可能的错误来源以及新Missy的未来应用。

著录项

  • 来源
    《Environmental Science & Technology》 |2014年第14期|8053-8061|共9页
  • 作者单位

    Federal Institute of Hydrology (BfG), Koblenz, Germany;

    Federal Institute of Hydrology (BfG), Koblenz, Germany;

    Federal Institute of Hydrology (BfG), Koblenz, Germany;

    Federal Institute of Hydrology (BfG), Koblenz, 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
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