Discrimination of Copper(II) Ions and Humate Complexes by Successive Desorption from Thiacalix[4]arenetetrasulfonate-Loaded Sephadex A-25

DOI PDF Web Site 参考文献24件
  • Matsumiya Hiroaki
    Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
  • Hiraide Masataka
    Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University

書誌事項

タイトル別名
  • Discrimination of Copper 2 Ions and Humate Complexes by Successive Desorption from Thiacalix 4 arenetetrasulfonate Loaded Sephadex A 25

この論文をさがす

抄録

A facile method for the analytical fractionation of copper humates and free copper(II) species is described. A chelating agent, thiacalix[4]arenetetrasulfonate (TCAS, 20 μmol), was electrostatically immobilized onto a strongly basic anion-exchanger, QAE-Sephadex A-25 (50 mg). The resulting TCAS-loaded Sephadex A-25 was packed into a column (6 mm i.d. × 7 mm high) and a water sample (10–50 cm3) was passed through the column to collect both copper humates and free copper(II) species. A 1.0-cm3 volume of 0.01 mol dm−3 nitric acid was passed through the column to selectively desorb the copper complexed with humic substances. Subsequently, 1.0 cm3 of 1 mol dm−3 nitric acid was passed through the same column to desorb the remaining copper, the fraction of free copper(II) species. The proposed two-step desorption method was successfully applied to the speciation analysis of copper in natural water samples by graphite-furnace atomic absorption spectrometry.

収録刊行物

参考文献 (24)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ