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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research >Determination of Cr(VI) in wood specimen: A XANES study at the Cr K edge
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Determination of Cr(VI) in wood specimen: A XANES study at the Cr K edge

机译：木材样品中Cr（VI）的测定：Cr K边缘的XANES研究

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摘要

The content of chromium in different oxidation states in chromium-treated wood was studied with XANES (X-ray absorption near-edge structure) measurements at the Cr K absorption edge. It could be shown that wood samples treated with Cr(VI) (pine and beech) did still contain a measurable content of Cr(VI) after four weeks conditioning. If such wood samples were heat exposed for 2 h with 135 ℃ prior conditioning, Cr(VI) was no longer detected by XANES, indicating a complete reduction to chromium (III).
机译：通过在Cr K吸收边缘的XANES（X射线吸收近边缘结构）测量研究了铬处理木材中不同氧化态的铬含量。可以证明，经过Cr（VI）处理的木材样品（松木和山毛榉）在经过4周的处理后仍含有可测量的Cr（VI）含量。如果将此类木材样品在135℃的条件下进行热暴露2小时，则XANES不再检测到Cr（VI），表明已完全还原为铬（III）。

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  • 来源
    《Nuclear Instruments & Methods in Physics Research》 |2008年第10期|p.2405-2407|共3页
  • 作者

    E. Strub; R. Plarre; M. Radtke; U. Reinholz; H. Riesemeier; U. Schoknecht; K. Urban; P. Juengel;

  • 作者单位

    Federal Institute for Materials Research and Testing (BAM), Department I (Analytical Chemistry, Reference Materials), 12200 Berlin, Germany ,Abteilung Nuklearchemie der Universitat zu Koln, Otto-Fischer-StraBe 14, 50674 Koln, Germany;

    Federal Institute for Materials Research and Testing (BAM), Department IV (Materials and Environment), 12200 Berlin, Germany;

    Federal Institute for Materials Research and Testing (BAM), Department I (Analytical Chemistry, Reference Materials), 12200 Berlin, Germany;

    Federal Institute for Materials Research and Testing (BAM), Department I (Analytical Chemistry, Reference Materials), 12200 Berlin, Germany;

    Federal Institute for Materials Research and Testing (BAM), Department I (Analytical Chemistry, Reference Materials), 12200 Berlin, Germany;

    Federal Institute for Materials Research and Testing (BAM), Department IV (Materials and Environment), 12200 Berlin, Germany;

    Federal Institute for Materials Research and Testing (BAM), Department IV (Materials and Environment), 12200 Berlin, Germany;

    Kurt Obermeier GmbH & Co. KG, Berghduser Strasse 70, 57319 Bad Berleburg-Raumland, Germany;

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  • 正文语种 eng
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  • 关键词

    x-ray spectroscopy; XANES; XAS; XRF; speciation; reduction;

    机译：X射线光谱;XANES;XAS;XRF;物种减少;

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