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Microchimica Acta

, Volume 98, Issue 4–6, pp 163–171 | Cite as

Determination of traces of gallium and indium in ores by electrothermal-atomization atomic absorption spectrometry with matrix modifications

  • Yutaka Hayashibe
  • Mayumi Kurosaki
  • Fumiyasu Takekawa
  • Rokuro Kuroda
Original Papers

Abstract

Methods were developed for the determination of gallium and indium in complex ores by electrothermal-atomization atomic absorption Spectrometry using matrix modifications. Nickel and nickel-ammonium sulfate as matrix modifier has enhanced the absorption signals for gallium and indium, respectively, eliminating the matrix interferences to allow their solutions in nitric acid to be used as calibration standards. No matrix separations are necessary. Results are quoted for a variety of black ore samples (Kuroko). The RSDs are 7.0% for gallium and 5.3% for indium at their 10 μg/g levels, and the inverse sensitivities are 20 pg of gallium and 38 pg of indium for respective 1% absorption.

Key words

electrothermal atomization atomic absorption spectrometry gallium indium black ores 

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Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • Yutaka Hayashibe
    • 1
  • Mayumi Kurosaki
    • 1
  • Fumiyasu Takekawa
    • 1
  • Rokuro Kuroda
    • 1
  1. 1.Laboratory for Analytical Chemistry, Faculty of EngineeringUniversity of ChibaChibaJapan

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