Analysis of ephedrine in ephedra callus by acetonitrile modified capillary zone electrophoresis

被引:25
作者
Li, GB
Zhang, ZP
Chen, XG
Hu, ZD [1 ]
Zhao, ZF
Hooper, M
机构
[1] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China
[2] Monash Univ, Sch Appl Sci, Churchill, Vic 3842, Australia
基金
中国国家自然科学基金;
关键词
electrophoresis; ephedra; ephedrine;
D O I
10.1016/S0039-9140(98)00311-7
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
A simple method has been developed for the quantitative determination of ephedrine in ephedra callus. The dependence of effective mobility of ephedrine on pH was investigated, and a simulated equation was obtained. The separation was performed in an uncoated capillary and detected at 185 nm. A new Tris-NaOH-H3PO4 run buffer was used and the pH was adjusted to 3.20. To increase the solubility of hydrophobic analytes and improve the separation efficiency, 15% acetonitrile was used in the buffer as a modifier. The content of ephedrine in an ephedra callus sample and an ephedra herba sample were determined with this method, and the result was satisfactory. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:1023 / 1029
页数:7
相关论文
共 10 条
[1]  
[Anonymous], 1977, DICT CHIN TRAD MED, P2222
[2]  
HU J, 1994, YAOWU FENXI ZAZHI, V14, P33
[3]  
Hu ZD, 1996, ANAL LETT, V29, P2573
[4]   ZONE ELECTROPHORESIS IN OPEN-TUBULAR GLASS-CAPILLARIES [J].
JORGENSON, JW ;
LUKACS, KD .
ANALYTICAL CHEMISTRY, 1981, 53 (08) :1298-1302
[5]  
Lide DR., 1992, CRC handbook of chemistry and physics, V73rd, P8
[6]   DETERMINATION OF EPHEDRINE ALKALOIDS BY CAPILLARY ELECTROPHORESIS [J].
LIU, YM ;
SHEU, SJ .
JOURNAL OF CHROMATOGRAPHY, 1992, 600 (02) :370-372
[7]   DETERMINATION OF QUATERNARY ALKALOIDS FROM COPTIDIS RHIZOMA BY CAPILLARY ELECTROPHORESIS [J].
LIU, YM ;
SHEU, SJ .
JOURNAL OF CHROMATOGRAPHY, 1992, 623 (01) :196-199
[8]   DETERMINATION OF PHARMACEUTICALS AND RELATED IMPURITIES BY CAPILLARY ELECTROPHORESIS [J].
NG, CL ;
ONG, CP ;
LEE, HK ;
LI, SFY .
JOURNAL OF CHROMATOGRAPHY A, 1994, 680 (02) :579-586
[9]  
RAMAWAT KG, 1976, PHYTOMORPHOLOGY, V26, P395
[10]   SEPARATION OF HYDROPHOBIC, POSITIVELY CHARGEABLE SUBSTANCES BY CAPILLARY ELECTROPHORESIS [J].
ZHANG, CX ;
VONHEEREN, F ;
THORMANN, W .
ANALYTICAL CHEMISTRY, 1995, 67 (13) :2070-2077