Matrix effects and the relationship between the relative sensitivity factors and the ionization potential in glow discharge mass spectrometry using Kr/0.2vol.%H2 mixture.

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  • SAITO Morimasa
    National Research Institute for Metals, Materials Physics Division

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  • クリプトン／水素混合ガスを用いるグロー放電質量分析法におけるマトリックス効果，相対感度係数とイオン化電圧との関係
  • クリプトン スイソ コンゴウ ガス オ モチイル グロー ホウデン シツリョウ ブンセキホウ ニ オケル マトリックス コウカ ソウタイ カンド ケイスウ ト イオンカ デンアツ ト ノ カンケイ

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Abstract

Glow discharge mass spectrometry (GDMS) using Kr/0.2 vol.%H2 mixture has been studied. The relative sensitivity factors (RSFs) for the analysis of 23 elements were determined based on a multiple determination of 10 reference materials representing steels, heat-resisting alloy, copper, aluminum, molybdenum and indium. The proposed method decreases the matrix effect, compared with the results obtained by Kr gas alone. In addition, when the technique combined with a liquid-nitrogen cryogenic-cooling Mega cell was used, a linear relationship was found to exist between the RSF values on the logarithmic scale and the first ionization potential of the elements. This proposed method may be determined without the use of standard reference materials.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 48 (1), 77-86, 1999

    The Japan Society for Analytical Chemistry

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