Citation:
Yan Ming Liu, Long Fei Peng, Lin Mei, Li Juan Liu. Determination of diastereoisomeric alkaloids in urine by capillary electrophoresis with electrochemiluminescence detection[J]. Chinese Chemical Letters,
;2011, 22(2): 197-200.
doi:
10.1016/j.cclet.2010.10.019
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A new and simple capillary electrophoresis with electrochemiluminescence detection was developed for the separation and the quantification of a pair of diastereoisomeric alkaloids (ephedrine and pseudoephedrine). The limits of detection (S/N=3) were 4.5×10-8 mol/L for ephedrine and 5.2×10-8 mol/L for pseudoephedrine, respectively. The RSDs of migration time and peak area were less than 1.3 and 2.5% (n=5), respectively. The applicability of the propose method was illustrated in the determination of ephedrine and pseudoephedrine in human urine, ephedrine in nasal drops, and the monitoring of pharmacokinetics for pseudoephedrine.
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Keywords:
- CE,
- Electrochemiluminescence,
- Alkaloids,
- Urine analysis,
- Pharmacokinetics
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