HPIC-AS5陰イオン交換カラムを用いるサプレッサー型イオンクロマトグラフィーにおける溶離剤の効果

概要

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The three reagents of borate, benzoate and 1,3,5-benzenetricarboxylate (BTC) were used as eluents for separating several anions on anion-exchange columns (Dionex HPIC-AG5 and HPIC-AS5 in series). The separations of anions with these eluents were compared with those with a carbonate eluent, which has been generally used for separating late-eluting anions such as S_2O_3^<2->, SCN^- and CLO_4^- on the columns. A 5×10_<-3> M borate eluent (pH 9.0) could be used for the separation of F^-, CL^-, NO_2^- and NO_3^- from their mixtures, and a 1.5×10^<-3>M benzoate eluent (pH 6.9) for seven anions of F^-, HCOO^-, HOCH_2SO_3^-, BrO_3^-, CL^-, NO_2^-and NO_3^-. A2×10^<-4>M BTC (pH 6.0) eluted SO_4^<2->, S_2O_3^<2->, SCN^-and CIO_4^- at small retention volumes and gave very sharp peaks for their species. Eluents of 1.5×10^<-3>M benzoate (pH 6.9) and 2×10^<-4>M BTC (pH 6.0) were successfully applied to the determinations of NO_2^- in sewage works water and S_2O_3^<2-> in effluent of photographic developer and fixer, respectively.
東海大学の論文