逐次溶解／誘導結合プラズマ発光分析法による地質標準試料中ホウ素の分別定量

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書誌事項

タイトル別名
  • Fractionation of boron in geological reference materials by sequential extraction/ICP-AES.
  • チクジ ヨウカイ ユウドウ ケツゴウ プラズマ ハッコウ ブンセキホウ ニ ヨ
公開日
1998
DOI
  • 10.2116/bunsekikagaku.47.881
公開者
公益社団法人 日本分析化学会

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説明

A five-step sequential chemical-extraction scheme is described for the analysis of B in geological reference materials by ICP-AES. Each of the chemical fractions is operationally defined as follows: 1) 0.1 M potassium nitrate for the ion-exchange and adsorbed fraction ; 2) 0.05 M ethylenediaminetetraacetic acid disodium salt (EDTA) for the EDTA soluble fraction; 3) a mixture of 0.025 M EDTA, 0.1 M ammonium oxalate, 0.1 M oxalic acid, 0.05 M ascorbic acid and 0.005 M HCl for the oxide fraction; 4) a mixture of 6 M HNO3 and 1 M HCl for the HNO3-HCl soluble fraction ; and 5) fusion with Na2CO3 for the residual fraction. The relative standard deviation for B at levels of 0.15 and 5 μg were 20 and 4%, respectively. The detection limit was approximately 0.8 ppm for a 0.1 g sample. Satisfactory agreement was observed between the sum of the B values from ionexchange and adsorbed to residual fractions and the reported total B values. Analytical results of B for twenty five geological reference materials, such as igneous rocks, sedimentary rocks, sediments, soils and coal fly ashes were tabulated, and geological and mineralogical features are discussed.

収録刊行物

  • 分析化学

    分析化学 47 (11), 881-887, 1998

    公益社団法人 日本分析化学会

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