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Hydride Generation System with a Hydrogen Separation Membrane for Low-Power Inductively Coupled Plasma Emission Spectrometry

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Abstract

In order to reduce the plasma fluctuation caused by large amounts of hydrogen, a hydrogen-separation membrane module, consisting of hollow fibers of an aromatic polyimide, was connected to a continuous-flow mode hydride generator. To overcome the relatively long time necessary to reach a steady-state signal and the large memory effect at room temperature, the membrane was operated at high temperature (ca. 80° C). The proposed hydride generation system was successfully applied to a low-power ICP (>0.6 kW). The detection limits for AsH3, GeH4, SbHj and SnH4 were improved by a factor of about three at the maximum. The relative standard deviations of emission intensities at 50 ng/ml were below 1%.

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Authors and Affiliations

  1. National Research Institute for Pollution and Resources, Tsukuba, Ibaraki, 305, Japan

    Hiroaki Tao, Akira Miyazaki & Kenji Bansho

Authors
  1. Hiroaki Tao
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  2. Akira Miyazaki
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  3. Kenji Bansho
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Tao, H., Miyazaki, A. & Bansho, K. Hydride Generation System with a Hydrogen Separation Membrane for Low-Power Inductively Coupled Plasma Emission Spectrometry. ANAL. SCI. 6, 195–199 (1990). https://doi.org/10.2116/analsci.6.195

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  • DOI: https://doi.org/10.2116/analsci.6.195

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