New apparatus for on-board batch preconcentration of trace elements in seawater using chelating resin.

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  • AKAGI Tasuku
    Department of Chemistry, Faculty of Science, The University of Tokyo
  • HARAGUCHI Hiroki
    Department of Chemistry, Faculty of Science, The University of Tokyo

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Other Title
  • キレート樹脂を用いるバッチ濃縮法を応用した海水中微量元素の船上濃縮装置の試作
  • キレート ジュシ オ モチイル バッチ ノウシュクホウ オ オウヨウシタ カイ
  • キレート樹脂を用いるバッチ濃縮法を応用した海水中微量元素の船上濃縮装置の試作(<特集>超微量分析のための前処理と予備濃縮)

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Abstract

An on-board preconcentration apparatus for trace elements in seawater has been newly developed. The technique employed is batch preconcentration using Chelex 100 chelating resin, which is an excellent pretreatment technique prior to the ICP-AES measurement. The advantage of the method have relatively short time and simple procedure for collecting many trace metals from seawater. The apparatus was designed so as to perform the following procedures almost successively, i. e. filtration of sample, stirring sample with resin, recovering of resin, and elution of analytes on the resin. The optimum preconcentration conditions were examined for stirring time and pH adjustment by using ICP-AES. It has been found that many elements such as Al, Co, Ni, Cu, Zn, Y, Cd and Pb can be preconcentrated by almost 100 times at pH 6, and Fe(III), Mn(II), Ti and V(V) at pH 3. The time taken for treatment of one sample was 2 or 3 h. The detection limits obtained with ICP-AES after preconcentration were below 100 ng/l.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 36 (11), 688-692, 1987

    The Japan Society for Analytical Chemistry

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