A GC method with headspace injection for determination of residual organic solvents acetone andn-hexane in andrographolide microcapsules was established. A CP-624 column was used with FID detection. The calibrationcur...A GC method with headspace injection for determination of residual organic solvents acetone andn-hexane in andrographolide microcapsules was established. A CP-624 column was used with FID detection. The calibrationcurves of acetone and n-hexane were linear in the ranges of 100~900mg (r=0.9999) and 5.8~52.2mg(r=0.9963),respectively. The average recoveries were 101.2% (RSD=1.78%) and 100.9% (RSD=2.51%), respectively. Thedetection limits were 64 and 18ng, respectively.展开更多
A capillary GC method for the determination of residual solvents——ethanol, ethyl acetate and toluene in isradipine was established. A ZB-624 capillary column was used. The calibration curves were linear in the range...A capillary GC method for the determination of residual solvents——ethanol, ethyl acetate and toluene in isradipine was established. A ZB-624 capillary column was used. The calibration curves were linear in the ranges of 30 - 600, 30 - 600, 10 - 150μg/ml, respectively. The average recoveries were 100.2%, 99.3% and 97.5%, respectively.展开更多
A capillary GC method with headspace was established for determination of residual organic solvents——ethanol, propanone, dichloromethane, chloroform and pyridine in clindamycin phosphate. A DB-624 capillary column w...A capillary GC method with headspace was established for determination of residual organic solvents——ethanol, propanone, dichloromethane, chloroform and pyridine in clindamycin phosphate. A DB-624 capillary column wasused with water as the solvent. The average recoveries of the five solvents were 98.2%, 96.7%, 98.6%, 97.5% and 103.1%,respectively. The detection limits were 7.8, 3.8, 0.4, 0.6 and 2.0μg/ml, respectively.展开更多
文摘A GC method with headspace injection for determination of residual organic solvents acetone andn-hexane in andrographolide microcapsules was established. A CP-624 column was used with FID detection. The calibrationcurves of acetone and n-hexane were linear in the ranges of 100~900mg (r=0.9999) and 5.8~52.2mg(r=0.9963),respectively. The average recoveries were 101.2% (RSD=1.78%) and 100.9% (RSD=2.51%), respectively. Thedetection limits were 64 and 18ng, respectively.
文摘A capillary GC method for the determination of residual solvents——ethanol, ethyl acetate and toluene in isradipine was established. A ZB-624 capillary column was used. The calibration curves were linear in the ranges of 30 - 600, 30 - 600, 10 - 150μg/ml, respectively. The average recoveries were 100.2%, 99.3% and 97.5%, respectively.
文摘A capillary GC method with headspace was established for determination of residual organic solvents——ethanol, propanone, dichloromethane, chloroform and pyridine in clindamycin phosphate. A DB-624 capillary column wasused with water as the solvent. The average recoveries of the five solvents were 98.2%, 96.7%, 98.6%, 97.5% and 103.1%,respectively. The detection limits were 7.8, 3.8, 0.4, 0.6 and 2.0μg/ml, respectively.