Determination of thallium in high purity selenium

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Other Title
  • 高純度セレン中のタリウムの定量
  • コウジュンド セレン チュウ ノ タリウム ノ テイリョウ
  • Studies on the analytical methods of trace impurities in high purity substances. VI
  • 高純度物質中の微量不純分の分析方法に関する研究(第6報)

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Description

Chemical analysis of T1 in high purity selenium was studied, whereby the most simple and sensitive method for separation and determination of micro amounts of T1 is established.<BR>Sample is decomposed by nitric acid, sulfuric acid and potassium sulfate, and Se is eliminated by evaporation. The residue is dissolved in hydrobromic acid and T1 is extracted by isopropylether. From the extract, to which is added an aqueous solution of rhodamine B and fully shaken, T1 determined spectrophotometrically.<BR>Determination of T1 down to a content of 0.1 ppm is easily carried out within about 2 hours.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 10 (2), 102-106, 1961

    The Japan Society for Analytical Chemistry

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