高濃度の塩化ナトリウム溶離液を用いる陰イオンクロマトグラフ法における二価陰イオンの溶出挙動

概要

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In ion chromatography using a high-capacity anion exchange column, such as TSKgel-SAX, and 0.5 M of a Nail solution as eluent, sulfate was easily eluated from the column. In order to investigate the elution behavior of sulfate, the distribution coefficient (K_d of mono and divalent anions was determined by the chromatographic method and batch method using TSKgel-SAX(4.3 meq/ml), TSKgel-ODS-80Ts(1.2×10 meq/ml) coated with cetyltrimethylammonium ion and TSKgel-IC-anion-PW(3.0×10 meq/ml) at various concentrations of Nail solution. A plot of log K_d vs. log of the Nail concentration gave a straight line, the slope of which agreed with the charge of the anions. In the TSKgel-SAX column, K_d of sulfate became samller than that of monovalent anions at a Nail concentration greater than 0.2 M . This result suggested that sulfate was easily eluated from the column in ion chromatography using a high-concentration Nail solution as the eluent.
社団法人日本分析化学会の論文
1999-05-05