Sparfloxacin can be oxidized by nitrous acid, then react with hydroiodic acid to form a fluorescent derivative. Based on this, a reversed-phase high performance liquid chromatographic pre-column derivatization new met...Sparfloxacin can be oxidized by nitrous acid, then react with hydroiodic acid to form a fluorescent derivative. Based on this, a reversed-phase high performance liquid chromatographic pre-column derivatization new method is described for the determination of sparfloxacin in human urine. The linear range is 0.05 mg/L to 4.0 mg/L, the recoveries are 91.5%similar to 95.7% and the RSD is 1.2%similar to4.2%. The results showed that this method is suitable for the determination of sparfloxacin in human urine.展开更多
C60 is successfully solubilized in micelle of six kinds of surfactants and UV/Vis spectra ofC60 in micellar system are studied. It is found that Brij-35 is the most efficient surfactant forsolubilization of C60 and th...C60 is successfully solubilized in micelle of six kinds of surfactants and UV/Vis spectra ofC60 in micellar system are studied. It is found that Brij-35 is the most efficient surfactant forsolubilization of C60 and the possible states of C60 existed in surfactants are also studied.Experiments of surface tension show that the sites for solubilization of C60 not only depend on thesorts of surfactants but also on their structures.展开更多
文摘Sparfloxacin can be oxidized by nitrous acid, then react with hydroiodic acid to form a fluorescent derivative. Based on this, a reversed-phase high performance liquid chromatographic pre-column derivatization new method is described for the determination of sparfloxacin in human urine. The linear range is 0.05 mg/L to 4.0 mg/L, the recoveries are 91.5%similar to 95.7% and the RSD is 1.2%similar to4.2%. The results showed that this method is suitable for the determination of sparfloxacin in human urine.
文摘C60 is successfully solubilized in micelle of six kinds of surfactants and UV/Vis spectra ofC60 in micellar system are studied. It is found that Brij-35 is the most efficient surfactant forsolubilization of C60 and the possible states of C60 existed in surfactants are also studied.Experiments of surface tension show that the sites for solubilization of C60 not only depend on thesorts of surfactants but also on their structures.
