メチルイソブチルケトン抽出,チオシアン発色によるスズ基バビットメタル中の鉄の定量方法

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タイトル別名
  • Colorimetric determination of iron in tin-base Babbitt metal using methyl isobutyl ketone extraction
  • メチルイソブチルケトン チュウシュツ , チオシアン ハッショク ニ ヨル スズキ バビットメタル チュウ ノ テツ ノ テイリョウ ホウホウ
  • Solvent extraction in analytical chemistry. I
  • 溶媒抽出法の工業分析への応用(第1報)

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抄録

For the determination of iron in tin-base Babbitt metal, the separation of tin as the main constituent is often to be a troublesome procedure. In the proposed method, the sample is dissolved in approximately 6N HCl, iron is reduced to Fe2+, and tin is extracted with methyl isobutyl ketone (MIBK) to be separated from iron. Thereafter, red color developed by adding ammonium thiocyanate is extracted with MIBK and iron is determined colorimetrically, by using the maximum absorbancy at 490 mμ.<BR>The sample (1g) is dissolved in a HCl-HNO3 mixture and made up to 100 ml with water. A 5ml portion is made to 6N in HCl, Na2S2O3 soln. added and Fe2+ and tin are separated by MIBK extraction. The aqueous layer is treated with H2O2 and boiled to decompose the excess of Na2S2O3, cooled, and Fe3+ of this solution is extracted with 25ml MIBK. The solvent layer is shaken with NH4NCS soln. and the coloration of iron is developed.<BR>By use of the above method, iron in tin-base Babbitt metal was determined with the result shown in Table III.

収録刊行物

  • 分析化学

    分析化学 9 (5), 399-402, 1960

    公益社団法人 日本分析化学会

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