Capillary Electrophoresis On-line Coupled with Atomic Fluorescence Spectrometry and Its Application for Speciation Analysis

Abstract

Abstract: The low cost, easy operation and high sensitivity of hydride generation atomic fluorescence spectrometer(HG-AFS) make it attractive as an on-line element-specific detector of capillary electrophoresis(CE) for speciation of hydride-forming elements. A few important practical aspects for the on-line coupling of CE to AFS are critically discussed. These include adaptation of conventional atomic fluorescence spectrometer for CE, design of an efficient interface, gas-liquid separator and AFS atomizer, and elimination of the effect of backpressure on CE separation. The application of the developed CE-HG-AFS for the speciation analysis of arsenic in water and urine samples is highlighted.

Key words: Hyphenated technique, Capillary electrophoresis, Hydride generation atomic fluorescence spectrometry, Speciation analysis, Interface

CLC Number:

O657

TrendMD:

YIN Xue-Bo, JIANG Yan, YAN Xiu-Ping, HE Xi-Wen. Capillary Electrophoresis On-line Coupled with Atomic Fluorescence Spectrometry and Its Application for Speciation Analysis[J]. Chem. J. Chinese Universities, 2004, 25(4): 618.

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Capillary Electrophoresis On-line Coupled with Atomic Fluorescence Spectrometry and Its Application for Speciation Analysis

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