Determination of germanium by atomic absorption spectrometry following volatile hydride generation.

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概要

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• A sensitive technique for determination of germanium was investigated by atomic absorption spectrometry following volatile hydride generation. Of the three types of hydride generator and atomizer systems tested, direct transfer of the generated hydride into nitrogen-hydrogen flame for atomization was found to be suitable. The sensitivity was enhanced more than 40–60% in phosphoric acid medium as compared to hydrochloric acid, malic acid, or tartaric acid media. Interference of nickel(II), gold(III), and cobalt(II) in hydrochloric acid medium was reduced by adding ethylenediaminetetraacetate as a masking reagent or replacing the acid medium by malic acid. Detection limit and relative standard deviation of ten determinations of 0.5 μg germanium(IV) in 20 ml of 0.20 M phosphoric acid were 7 ng (S/N=2) and 4.3%, respectively, with 3 ml of 8 w/v % sodium tetrahydroborate solution. The method was applied to the determination of germanium in standard rocks, concentrations of germanium in JB-1 and JG-1 being evaluated as 1.3<SUB>1</SUB> and 1.3<SUB>2</SUB> ppm, respectively.

• 公益社団法人 日本化学会の論文

著者

• JIN Kazuo

  Hokkaido Institute of Public Health

• Taga Mitsuhiko

  Department Of Chemistry Faculty Of Science Hokkaido University

• Terada Hiroaki

  Iwamizawa College, Hokkaido University of Education

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