A micellar electrokinetic chromatographic (MECC) method with sodium cholate as pseudostationary phase was proposed for the separation and quantitation of two analgesic formulations containing acetaminophen, dextro-met...A micellar electrokinetic chromatographic (MECC) method with sodium cholate as pseudostationary phase was proposed for the separation and quantitation of two analgesic formulations containing acetaminophen, dextro-methorphan hydrobromide, phenylpropanolamine hydrochloride, and chlorpheniramine maleate. The internal standard method was proved to be able to yield satisfactory results even with a modular CE instrument with RSD between 0.6 similar to 2.1%, and recoveries ranging from 98.1 similar to 99.9%.展开更多
Two capillary electrophoresis methods were developed for the determination of the active constituents in four anti-hrpertensive formulations.These active constituents are nitrendipine and atenolol in Tabellae Nile, an...Two capillary electrophoresis methods were developed for the determination of the active constituents in four anti-hrpertensive formulations.These active constituents are nitrendipine and atenolol in Tabellae Nile, and hydrochlorothiazide, amiloride hydrochloride, captopril, and enalapril maleate in three other tablet formulations,respectively. The internal standard method was employed for quantitation with RSD between 1 .2~4.3%, recoveries ranging from 93. 1 ~ 101 .0%.展开更多
The successive six step rsductions of C(70) in watar-free acetonitrile-xylane (1:4) mixed solvent containing 0.1 mol/ L tetrabutylammonium hexafluorophosphate (Bu4NPF4) were obtained at below 20℃ by using An and Pt m...The successive six step rsductions of C(70) in watar-free acetonitrile-xylane (1:4) mixed solvent containing 0.1 mol/ L tetrabutylammonium hexafluorophosphate (Bu4NPF4) were obtained at below 20℃ by using An and Pt microdisk electrodes. Several alactrochanical date ware detsrmined.展开更多
Cyclodextrin-modified CZE was applied to the chiral separation of two basic drugs, i.e., esmolol and terazosin. Selector screening and concentration optimization experiments were performed. Resolution 3.1 for esmolol,...Cyclodextrin-modified CZE was applied to the chiral separation of two basic drugs, i.e., esmolol and terazosin. Selector screening and concentration optimization experiments were performed. Resolution 3.1 for esmolol, 1.2 for terazosin were achieved when using 60 mmol/L gamma-CD and 60 mmoL/L DM-P-CD, respectively, in 50 mmol/L pH 2.5 sodium phosphate buffer.展开更多
文摘A micellar electrokinetic chromatographic (MECC) method with sodium cholate as pseudostationary phase was proposed for the separation and quantitation of two analgesic formulations containing acetaminophen, dextro-methorphan hydrobromide, phenylpropanolamine hydrochloride, and chlorpheniramine maleate. The internal standard method was proved to be able to yield satisfactory results even with a modular CE instrument with RSD between 0.6 similar to 2.1%, and recoveries ranging from 98.1 similar to 99.9%.
文摘Two capillary electrophoresis methods were developed for the determination of the active constituents in four anti-hrpertensive formulations.These active constituents are nitrendipine and atenolol in Tabellae Nile, and hydrochlorothiazide, amiloride hydrochloride, captopril, and enalapril maleate in three other tablet formulations,respectively. The internal standard method was employed for quantitation with RSD between 1 .2~4.3%, recoveries ranging from 93. 1 ~ 101 .0%.
文摘The successive six step rsductions of C(70) in watar-free acetonitrile-xylane (1:4) mixed solvent containing 0.1 mol/ L tetrabutylammonium hexafluorophosphate (Bu4NPF4) were obtained at below 20℃ by using An and Pt microdisk electrodes. Several alactrochanical date ware detsrmined.
文摘Cyclodextrin-modified CZE was applied to the chiral separation of two basic drugs, i.e., esmolol and terazosin. Selector screening and concentration optimization experiments were performed. Resolution 3.1 for esmolol, 1.2 for terazosin were achieved when using 60 mmol/L gamma-CD and 60 mmoL/L DM-P-CD, respectively, in 50 mmol/L pH 2.5 sodium phosphate buffer.
