【摘要】 目的建立大鼠胆汁中 9 硝基喜树碱的高效液相色谱梯度洗脱方法。方法胆汁样品经乙腈 水 ( 1∶1 )稀释后 ,直接进样。检测波长为 370nm ,采用HypersilBDSC18柱 ( 5 μm,1 5 0mm× 4 6mmI D )分离 ,使用以乙腈 2 %甲酸水溶液为流动相的二元梯度洗脱方法。结果线性范围为 0 5～2 5 μg/mL,定量限为 0 5 μg/mL。结论本法操作简便 ,成功应用于胆汁中 9 硝基喜树碱的含量的测定及胆汁中 9 硝基喜树碱代谢物的初步研究。更多还原

【Abstract】 Objective To develop a novel HPLC UV method for determination of 9 nitrocamptothecin (9 NC) in the rat′s bile. Method The samples were separated on a Hypersil BDS C 18 column after being diluted by acetonitrile water (1∶1). The mobile phase consisted of acetonitrile and water, and a gradient elution program was applied. The UV detector was set at 370 nm. Result The liner calibration curves were obtained in the concentration range of 0 5 ～ 25 μg/mL . The limit of quantification was 0 5 μg/mL . Conclusion The method was simple and successfully applied to determining the concentrations of 9 NC in the bile samples, and it also offered a way to the preliminary study on the metabolites of 9 NC in the rat′s bile.更多还原