Developement of a Simple ion Chromatography Using Chemical Reactions and Application to Environmental Analysis

DOI NDL Digital Collections Web Site Web Site 4 Citations 65 References
  • NONOMURA Makoto
    Resource and Environmental Sciense Group, Tokyo Metropolitan Industrial Technology Research Institute

Bibliographic Information

Other Title
  • 化学反応を利用する簡便なイオンクロマトグラフィーの開発と環境分析への応用
  • カガク ハンノウ オ リヨウ スル カンベン ナ イオン クロマトグラフィー ノ カイハツ ト カンキョウ ブンセキ エ ノ オウヨウ

Search this article

Description

This paper describes a simple ion chromatography (IC) using a conductometric detector (CD) for undetectable species, and insoluble gas components. The ion species that can't be measured with CD are changed to detectable ion species by chemical reactions, and insoluble gas components are collected in an alkanolamine absorbing solution. The cyanide ion (CN−, pKa = 9.2) and metal cyanide complexes were changed to cyanate ion (CNO−, pKa = 3.66) by sodium hypochlorite or a chloramine T solution, after which they were determined by IC with CD. Residual chlorine (Cl2, pKa = 7.5) was changed to CNO− by a p -toluenesulfonamide and potassium cyanide (KCN) solution, and could be determined by IC with CD. In addition, it was proved that the residual chlorine changed to CNO− by a KCN solution, directly. The methods were applied to the determination of cyanide compounds in a plating solution and wastewater, and residual chlorine in tap water. We found that nitrogen dioxide (NO2) was collected in a triethanolamine (TEA) absorbing solution, and nitrogen monoxide (NO) was oxidized to NO2 by ultraviolet irradiation, after which they were determined by IC. The acid components, such as sulfur oxides, hydrogen chloride and nitrogen oxides, were collected in a TEA absorbing solution, and determined by IC, simultaneously. Carbon dioxide was collected in a 2-amino-2-methyl-1-propanol absorbing solution, and could be determined by IC using a KOH eluent and CD. Formaldehyde in water was oxidised to formic acid by hydrogen peroxide (H2O2) and a KOH solution, and could be easily determined by IC. In addition, low sulfur (<10 ppm) in fuel was determined by IC after combusion to sulfur oxides, and collected in a H2O2 absorbing solution.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 54 (3), 191-203, 2005

    The Japan Society for Analytical Chemistry

Citations (4)*help

See more

References(65)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top