イオン交換樹脂を直接加熱する原子吸光分析の試み

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タイトル別名
  • Atomization by direct heating of metal-adsorbed ion-exchange resin in atomic absorption spectrometry
  • イオン コウカン ジュシ オ チョクセツ カネツスル ゲンシ キュウコウ ブン

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抄録

For the determination of trace metal elements by atomic absorption spectrometry, the direct heating and atomization of the metal-adsorbed ion-exchange resin has been attempted. The ion-exchange resin (Wg) is put into the sample solution (V l) of the metal ion concentration C, and the system is brought to equilibrium. Then, ωg of resin is taken out, dried, and mounted on the carbon furnace atomizer. The absorbance due to the metal is theoretically proportional to VωC/W. Two peaks appear on the absorbance chart. The first peak (P1) appears in the "Ashing" period, and the second peak (P2) appears in the "Atomizing" period. Since the mean value of intensity ratio P2/P1 of the H-type resin was 0.33, the absorbance of the metal is estimated to be (P2-0.33P1)/ P1, assuming that the resin amount ω is proportional to P1. Although the analytical results by this method have low precision, it is possible to analyze a copper solution of a very low concentration such as 0.05 ppb.

収録刊行物

  • 分析化学

    分析化学 28 (5), 325-327, 1979

    公益社団法人 日本分析化学会

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