科研之友
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摘要
In this study, a novel on-column enrichment technique filled with C-18-functionalized magnetic silica nanoparticles was successfully developed for the determination of lidocaine in rat plasma by high performance liquid chromatography (HPLC). The synthesized Fe3O4@SiO2-C-18 nanoparticles were locally packed into the capillary by the application of magnets. Lidocaine in the sample solutions pumped into the capillary tube could be easily adsorbed by Fe3O4@SiO2-C-18 through hydrophobic interaction by the interior C-18 groups, and eluted by acetonitrile solution. Different extraction conditions were investigated. Method validations including linear range, quantification limit, detection limit, precision, accuracy and recovery were also studied. The results showed that the proposed method based on on-column enrichment by Fe3O4@SiO2-C-18 was a novel, little solvent and efficient approach for the determination of lidocaine in the complex plasma samples.
- 出版日期2011-10-14
- 单位中国人民解放军总医院; 复旦大学
