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Determination of benzhexol hydrochloride by capillary zone electrophoresis with an end-column electrochemiluminescence detection
A capillary zone electrophoresis with end-column electrochemiluminescence (ECL) detector was described for the determination of benzhexol hydrochloride. The detection was based on the tris(2,2′-bypyridine)ruthenium(II) [Ru(bpy) 3 2+] ECL reaction with the analyte. Electrophoresis was performed using...
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Published in: | Microchemical journal 2004-02, Vol.76 (1), p.11-16 |
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Main Authors: | , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A capillary zone electrophoresis with end-column electrochemiluminescence (ECL) detector was described for the determination of benzhexol hydrochloride. The detection was based on the tris(2,2′-bypyridine)ruthenium(II) [Ru(bpy)
3
2+] ECL reaction with the analyte. Electrophoresis was performed using a 25 μm i.d. uncoated capillary. 10 mM sodium phosphate buffer (pH=8.0) was used as the running buffer. The solution in the detection cell was 80 mM sodium phosphate (pH=8.0) and 5 mM Ru(bpy)
3
2+. A linear calibration curve of three-orders of magnitude was obtained (with a correlation coefficient of >0.999) from 1.0×10
−8 to 1.0×10
−5 M and the limit of detection was 6.7×10
−9 M (
S/
N=3). This just provides an easy and sensitive method to determine the active ingredient in pharmaceutical formulations. |
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ISSN: | 0026-265X 1095-9149 |
DOI: | 10.1016/j.microc.2003.10.003 |