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新型在线SPE-LC/MS/MS系统用于血浆药物的高通量直接测定
发布:上海仪真分析仪器有限公司浏览次数:845A technique using a fully automated on-line solid phase extraction (SPE) system (Symbiosis, Spark Holland) combined with liquid chromatography (LC)mass spectrometry (MS/MS) has been investigated for fast bioanalytical method development, method validation and sample analysis using both conventional C18 and monolithic columns. Online SPE LCMS/MS methods were developed in the automated mode for the quantification of model compounds (propranolol and diclofenac) directly in rat plasma. Accuracy and precision using online SPE LCMS/MS with conventional C18 and monolithic columns were in the range of 88111% and 0.514%, respectively. Total analysis cycle time of 4 min per sample was demonstrated using the C18 column. Monolithic column allowed for 2 min total cycle time without compromising the quality and validation criteria of the method. Direct plasma sample injection without on-line SPE resulted in poor accuracy and precision in the range of 41108% and 381%. Furthermore, the increase in back pressure resulted in column damage after the injection of only 60 samples. Symbiosis Pro 在线固相萃取-液相色谱联用系统 SYMBIOSIS PICO在线固相萃取SPE-LC联用系统
2009-08-13相关仪器 -
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