Analysis of hexavalent chromium species in household articles by a laboratory-type X-ray absorption spectrometer

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  • YAMAMOTO Takashi
    Department of Regional Science, Graduate School of Integrated Arts and Sciences, The University of Tokushima Department of Mathematical and Material Sciences, Faculty of Integrated Arts and Sciences, The University of Tokushima
  • KONDO Masaya
    Department of Mathematical and Material Sciences, Faculty of Integrated Arts and Sciences, The University of Tokushima

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  • 実験室系XAFS装置を用いた皮革，めっき，鉱石中の六価クロムの分析
  • ジッケンシツケイ XAFS ソウチ オ モチイタ ヒカク,メッキ,コウセキ チュウ ノ ロクカ クロム ノ ブンセキ

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<p>Cr K-edge XANES spectra of various kinds of household articles such as leather products and chromate conversion coatings were recorded with a laboratory-type X-ray absorption spectrometer for quantitative analysis of hexavalent chromium species. The low energy resolution settings were found to be enough and suitable for the quantitative analyses with the spectrometer. The tiny but distinct preedge peak characteristics to hexavalent chromium species could be detected in XANES spectra of chromate conversion coatings with iridescent color, and the ratios of hexavalent to sum of hexa- and trivalent chromium species (Cr6+/(Cr6++Cr3+)) were calculated by the preedge peak height.</p>

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