高マンガン-亜鉛合金中ベリリウムの光度定量法

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タイトル別名
  • Spectrophotometric Determination of Beryllium in High Manganese Zinc Alloy
  • コウマンガン-アエン ゴウキン チュウ ベリリウム ノ コウド テイリョウホウ

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抄録

Acetylacetone-chloroform extraction involving the use of ethylenediamine-tetraacetate as a masking agent for foreign metals has been applied to the determination of beryllium in a high manganese zinc alloy, and the rapid spectrophotometric method is established with good accuracy and reproducibility in the range of 0.002 to 1.0% of beryllium.<BR>Some factors affecting the absorbance are investigated. Suitable pH for extraction is 7.2 to 9.4, and its adjustment is simplified by using phenol red indicator.<BR>The stabilized period of absorbance of the extracted acetylacetonate phase varies with the coexisting time of aqueous and organic phases after extraction. Maximum stability is obtained at the coexisting time 5 to 10 minutes, but the absorbance measured in 5 minutes gives a correct result even without the coexisting time.<BR>As the salting-out agent any of NaCl, Na2SO4 or NaNO3 is successfully used.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 28 (6), 330-334, 1964

    公益社団法人 日本金属学会

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