イオン交換クロマトグラフィーによる工場排水中微量重金属イオンの迅速分析

概要

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An ion-exchange method using a constant potential coulometric detector, was applied to the determination of micro amounts of heavy metal ions in industrial waste water. In order to improve the sensitivity and selectivity of the method, the analytical conditions were studied in details. The following analytical conditions are recommended; pH range of the sample solution : 2.0〜5.0, sample volume : 2.0 ml, resin : Hitachi No. 2611 (degree of crosslinking : 10 %, size: 15 μm), column : 100 mm × 90 mm i.d., 50℃, eluent: 0.2 M NH_4-tartrate (pH 4.6), 90 ml/h, eluent for removal of Ca^<2+>, Mg^<2+>, etc. : 0.5 M Na-tartrate (pH 5.0), electrolyte : 0.01 M Hg-diethylene triamine pentaacetate-1 M NH_4OH-0.1 M NH_4NO_3, detection potential : 0,24 V vs. Ag-Agl. Under the recommended conditions, the following heavy metal ions can be determined within 25min : Cu^<2+> (down to 0.02 ppm), Zn^<2+> (0.02 ppm), Co^<2+> (0.02 ppm), Pb^<2+> (0.05 ppm) and Cd^<2+> (0.05 ppm).
社団法人日本分析化学会の論文
1980-09-05