Atomic absorption spectrometry of silver collected on ion-exchange filter paper by directly heating the filter paper.

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Other Title
  • イオン交換ろ紙を直接加熱する銀の原子吸光分析
  • イオン コウカン ロシ オ チョクセツ カネツスル ギン ノ ゲンシ キュウコ
  • イオン交換〓紙を直接加熱する銀の原子吸光分析

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In this paper direct determination of silver collected on ion-exchange filter paper was studied. 50 ml of sample solution of which pH was adjusted to 3.3 with hydrochloric acid was passed through a sheet of ion-exchange filter paper, and after the filter paper was dried, it was punched with a 2.5 mm puncher. The small tablet was put onto a tungsten atomizing furnace and electrothermally heated. The calibration curve was linear at Ag+ concentrations below 0.3 ng/ml, and 1% absorption sensitivity was 1.2×10-3 ng/ml. Coexsisting 104-fold Na+, 103-fold Cu2+, and 103-fold Pb2+ did not affect the absorbance of Ag. Detection limit of this method is considered to lower by increasing the volume of sample solution.

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 34 (9), 573-575, 1985

    The Japan Society for Analytical Chemistry

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