ポーラログラフによる鉛快削鋼中の鉛定量方法

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  • 田島 信雄
    株式会社豊田自動織機製作所紡機技術部材料研究課
  • 黒部 森司
    株式会社豊田自動織機製作所紡機技術部材料研究課
  • 寺田 弘明
    株式会社豊田自動織機製作所紡機技術部材料研究課

書誌事項

タイトル別名
  • Polarographic determination of lead in free cuting steel
  • ポーラログラフ ニ ヨル ナマリカイサクコウ チュウ ノ ナマリ テイリョウ ホウホウ
  • Solvent extraction in analytical chemistry VII
  • 溶媒抽出法の工業分析への応用(第7報)

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抄録

The free cuting steel sample was dissolved in perchloric acid, the excess of acid was driven off, the residue was treated with hydrochloric acid and the iron as a main component was separated by extraction with methyl isobutyl ketone. The aqueous layer was evaporated to dryness and the organic substances were decomposed. The residue was taken up in 10ml 6N hydrochloric acid, a little starch solution added, and made up to 50ml with water. An aliquot was taken for polarographic determination of lead at -0.3-0.7V.<BR>0.10.4% lead in a steel containing 0.4% nickel, 1.5% chromium, 1.0% manganese and 0.5% molybdenum was determined easily by the proposed method. It has a special merit for routine analysis in the plant as it requires less reagent than the conventional methods, in which lead is determimed after the isolation from the other elements or in the presence of Fe after it is reduced to Fe2+.

収録刊行物

  • 分析化学

    分析化学 11 (1), 65-68, 1962

    公益社団法人 日本分析化学会

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