Simultaneous and sensitive analysis of aliphatic carboxylic acids by ion-chromatography using on-line complexation with copper(II) ion.

Tomoko Kemmei,Shuji Kodama,Atsushi Yamamoto,Yoshinori Inoue,Kazuichi Hayakawa

Journal of Chromatography A（2015）

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摘要

•A sensitive IC–UV method for the analysis of aliphatic carboxylic acids was developed.•Adding copper(II) ion to the mobile phase resulted in sensitive determination of carboxylic acids.•Adding acetonitrile to the mobile phase improved the separation.•The LOD of eleven examined carboxylic acids ranged from 0.06μM to 3μM.•The proposed method was applied to determine carboxylic acids in rainwater and a bread sample.

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关键词

Carboxylic acids,Ion-exchange chromatography,Copper(II) ion,UV detection,Rainwater,Bread

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