RESUMEN
A method has been developed for the determination of stimulants in products of nutritional supplement. The stimulants in the samples were extracted with a solution of sodium hydroxide and then cleaned up by liquid -liquid partitioning.The extracted stimulants were analyzed by gas chromatography with HP-5capilary column and detected by the Nitrogen-Phosphorus detector (NPD). The results showed that the method had good purifying effect with high sensitivity. The operation was also simple and quick. The detection limit ranged from 5 to 40 ?g/L and the average recovery rate was 75.4%～143.1% with relative standard deviations (RSDs) ranged from 0.27% to 5.5%.
RESUMEN
OBJECTIVE:To determine the content of C 3 F 8 in human albumin microspheres filling-with C 3 F 8 .METHODS:By Tekmar3000purge and trap concentrator coupled with a Hewlett-Packard5972GC/MSD.RESULTS:C 3 F 8 contents in samples were119.1～433.5?g/ml.CONCLUSION:The method is feasible and suitable for quality control.