Determinationn of Trace Amount of Metal Ions by Reversed-Phase Ion-Pair Liquid Chromatography with Post-Column Derivatization Chemiluminescence Detection

Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (12): 1653.

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Determinationn of Trace Amount of Metal Ions by Reversed-Phase Ion-Pair Liquid Chromatography with Post-Column Derivatization Chemiluminescence Detection

ZHANG Xin-Xiang, CHENG Jie-Ke, ZENG Yun-E

Department of Chemistry, Wuhan University, Wuhan, 430072

Received:1992-12-11 Revised:1993-07-20 Online:1993-12-24 Published:1993-12-24

Abstract

Abstract: The separation and determination of Cr(Ⅲ), Fe(Ⅱ), Fe(Ⅲ), Cu(Ⅱ), and Co(Ⅱ) were demonstrated by reversed-phase ion-pair liquid chromatography with chemiluminescence detection.Areversed-phase column (YWQ-C18, 10 μm, 150×4.0 mm i.d.) was used.The ion-pair ion was sodium dodecyl sulfate (SDS) and the eluent was lactic acid.The Chemiluminescence system used was luminol-KOH-H₂O₂-Brij 35 system.The separation and detection conditions were studied.In the optimization condition the metal ions could be determined in the range from 1.0×10^-11 to 1.0×10^-5g/mLwith the detection limits of 10 pg Cr(Ⅲ), 0.4 pg Fe (Ⅱ), 20 pg Fe(Ⅲ), 1.0 pg of Cu(Ⅱ), and 0.01 pg Co(Ⅱ), respectively.

Key words: Reversed-phase ion-pair liquid chromatography, Post-column derivatization chemilu-minescence detection, Metal ions

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ZHANG Xin-Xiang, CHENG Jie-Ke, ZENG Yun-E. Determinationn of Trace Amount of Metal Ions by Reversed-Phase Ion-Pair Liquid Chromatography with Post-Column Derivatization Chemiluminescence Detection[J]. Chem. J. Chinese Universities, 1993, 14(12): 1653.

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Determinationn of Trace Amount of Metal Ions by Reversed-Phase Ion-Pair Liquid Chromatography with Post-Column Derivatization Chemiluminescence Detection

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