Portable x-ray fluorescence spectrometer with a pyroelectric x-ray generator

Authors

  • Hiroyuki Ida,

    Corresponding author
    1. Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
    2. Forensic Science Laboratory, Kyoto Prefecture Police H.Q., Kamigyo-ku, Kyoto 602-8550, Japan
    • Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan.
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  • Jun Kawai

    1. Department of Materials Science and Engineering, Kyoto University, Sakyo-ku, Kyoto 606-8501, Japan
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Abstract

A portable x-ray fluorescence spectrometer was assembled with an x-ray generator that was driven by a 9 V dry electric battery. Several possible optimum geometries of the x-ray generator and detector were evaluated, and the results showed that the intensity of fluorescent x-rays was strong enough when the angle between the x-ray generator and detector was as small as 30°. The geometrically optimized x-ray spectrometer was applied to the analysis of paints, plastics and aluminum foils. Pigments in paint and toxic elements in plastic could be easily detected with on-site analysis. Fe in aluminum foil was quantitatively determined down to the sub-% level. The detection limit of Fe was 180 ppm for 100 s of measurement. Copyright © 2005 John Wiley & Sons, Ltd.

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