High Frequency Conductivity Detector for Capillary Electrophoresis

Abstract

Abstract: A high frequency conductivity detector for capillary electrophoresis was designed based on the principle of high frequency titration.In this detector, two tubular electrodes were placed outside the separation capillary.The results of various influence factors could be explained theoretically.The good detection conditions were 0.5—1.5 mm of distance between the two electrodes, and 20—50 kHz of frequency.LODreached about 10^-6 mol/L.The detector can be used to detect all charged analytes and avoid poisoning of electrodes.

Key words: Capillary electrophoresis, Detector, High frequency conductivity

CLC Number:

O657

TrendMD:

CHEN Zuan-Guang, MO Jin-Yuan. High Frequency Conductivity Detector for Capillary Electrophoresis[J]. Chem. J. Chinese Universities, 2002, 23(5): 801.

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High Frequency Conductivity Detector for Capillary Electrophoresis

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