2,3-ジアミノナフタレンを用いるたい積物中のセレンのけい光定量

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書誌事項

タイトル別名
  • ２，３‐ジアミノナフタレンを用いるたい積物中のセレンのけい光定量
  • Fluorometric determination of selenium in sediments with 2, 3-diaminonaphthalene
  • 2 3 ジアミノナフタレン オ モチイル タイセキブツチュウ ノ セレン ノ

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説明

A 2, 3-diaminonaphthalene (DAN)-cyclohexane extraction method is described for the determination of selenium in sediments. A sediment sample weighing 0.05 to 0.2 g is opened up with a mixture of hydrofluoric acid, nitric acid and perchloric acid, and evaporated to strong fumes of perchloric acid. DAN, EDTA and sodium fluoride are added to the perchloric acid solution and selenium is extracted from the mixed solution (pH 1) with cyclohexane. Selenium in the organic layer is stripped by nitric acid, and subsequently determined fluorometrically with DAN after reduction to selenium (IV) in a boiling hydrochloric acid solution. This method is excellent for the determination of selenium in view of conveniency, rapidity, high sensitivity (detection limit : 0.5 ng Se) and good reproducibility. Results are also quoted on the analysis of biological materials such as NBS Orchard Leaves and Bovine Liver for selenium.

収録刊行物

  • 分析化学

    分析化学 28 (3), 164-169, 1979

    公益社団法人 日本分析化学会

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