鋳鉄中微量亜鉛の光度定量法

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タイトル別名
  • Spectrophotometric Determination of Small Amounts of Zinc in Cast Iron. (Determination of Small Amounts of Special Elements in Cast Iron (2nd Report))
  • チュウテツ チュウ ビリョウ アエン ノ コウド テイリョウホウ

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抄録

Bricker’s double extraction method for determination of Zn in steel was modified and simplified by studing the conditions of extracting and washing the zinc dithizonate. Extracting the Zn for once with 25 mL of benzene solution of 0.01% dithizone for 2 minutes and washing the extracting layer 6 times with 10 mL of 0.05%Na2S is the most suitable condition for the determination of Zn. The use of benzene as the solvent of dithizone has more advantages for Zn as well as Pb than that of CHCl3 or CCl4, for with the former a single extraction is effective enough and the washing is easy, etc. The color of zinc dithizonate is stable for at least 4 days. Other elements in cast iron or carbon steel do not interfere except over 0.4% of Cu. The proposed method is suitable for the determination of 0.0002∼0.04% of Zn contained in cast iron and carbon steel.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (3), 160-164, 1959

    公益社団法人 日本金属学会

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