間接紫外吸収検出イオンクロマトグラフィーに用いるフタル酸溶離液の検討

概要

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A study to find a better mobile phase for use in the rapid determination of inorganic anions such as fluoride, chloride, nitrite, phosphate, nitrate and sulfate ions by indirect photometric ion chromatography is presented. The eluent optimized was a weak-alkaline (pH 7.3) buffer solution containing 0.7mM potassium hydrogenphthalate-0.1mM sodium tetraborate-0.5mM boric acid-0.1mM HEPPS-0.05mM sodium hydrogencarbonate-5% butanol. The problem of the system peak otherwise encountered was eliminated by judicious choice of the alkalinity of the buffer solution. The eluent did not show any pH drift typically caused by dissolution of carbon dioxide, and was able to separate the phosphate ion completely from the chloride. Whole anions above described were determined within 15 min.
社団法人日本分析化学会の論文
1994-03-05