非分散ゾーンを利用する高濃度亜鉛溶液中の銅（ＩＩ）イオンのフローインジェクション分析

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  • 佐山 恭正
    三菱マテリアル(株)中央研究所分析材料試験研究部
  • 徳田 昌弘
    三菱マテリアル(株)中央研究所分析材料試験研究部
  • 林部 豊
    三菱マテリアル(株)中央研究所分析材料試験研究部

書誌事項

タイトル別名
  • Spectrophotometric determination of copper(II) in concentrated zinc solution for hydrometallurgical zinc refining by a flow injection method utilizing non-dispersed sample zone.
  • ヒ ブンサン ゾーン オ リヨウスル コウ ノウド アエン ヨウエキチュウ ノ

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抄録

A flow-injection method for the determination of copper(II) in concentrated zinc solutions, such as hydrometallurgical zinc refining process streams, was developed. A copper(II) sample solution containing about 150 gZnl-1 was directly injected into a carrier stream, and immediately introduced into a spectrophotometer equipped with a flow-cell. The absorbance of copper-aqua complex ion was measured at 810 nm. Characteristics of the proposed method is to utilize the non-dispersed sample zone generated by injecting a large volume of sample solution in order to improve the interference from the refractive index change, generated at the interface between high-salt concentration sample and carrier solutions. A calibration curve was constructed by using solutions prepared by adding various increments of standard copper(II) solution to the purified (copper-free) zinc electrolyte. The proposed system was operated automatically by a personal computer, a maximum of 10 samples being analyzed per hour. Relative standard deviation (RSD) and the detection limit of the proposed method were 5% at the 500 mgCul-1 level (n=104) and 3 mgCul-1, respectively.

収録刊行物

  • 分析化学

    分析化学 44 (6), 491-495, 1995

    公益社団法人 日本分析化学会

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