5-スルホ-8-キノリノールを用いる河川水中の重金属元素の前濃縮と原子吸光分析

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タイトル別名
  • ５‐スルホ‐８‐キノリノールを用いる河川水中の重金属元素の前濃縮と原子吸光分析
  • Preconcentration of heavy metals as the 5-sulfo-8-quinolinolates in river water and the determination by atomic absorption spectrophotometry
  • 5 スルホー8 キノリノール オ モチイル カセンスイチュウ ノ ジュウキンゾ

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For the concentration of trace heavy metal ions, 5-sulfo-8-quinolinol (QSA) was used as a chelating agent for heavy metals to form soluble chelates and adsorption behavior of these metal-QSA chelates onto an anion exchange resin was studied, and the atomic absorption spectrophotometric method for the determination of several heavy metals was established. The recommended analytical procedure is as follows; to 3 l of river water, which was filtered through a membrane filter (MFHA), was added (15) ml of 2% QSA solution and pH of the solution was adjusted to 88.5, then the solution was introduced onto an anion exchange column {Dowex 1-X 8, (100200) mesh, Cl form, i.d. 10 mm, height 50 mm} at a flow rate of (56) ml/min and adsorbed heavy metals were eluted with 25 ml of 2M HNO3. Then, the quantities of Cu(II), Zn(II), Mn(II), and Pb(II) in the effluent were determined by atomic absorption spectrophotometry. The relative standard deviations for Cu(II), Zn(II), and Mn(II) in river water were estimated to be less than 5.4%, 6.9%, and 3.1%, respectively. The recommended procedure is useful to minimize the storage problem caused by the hydrolysis and the adsorption loss of minor elements in sample water.

収録刊行物

  • 分析化学

    分析化学 28 (8), 485-490, 1979

    公益社団法人 日本分析化学会

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