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| Preparation of TiO2 Coated Column Capillary by Polydopamine Assisted Liquid Phase Deposition and Its Application in Capillary Electrochromatography |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:polydopamine titanium dioxide capillary electrochromatography inorganic anions alkaloids |
| Author | Institution |
| LI Xiang-liang,SHENG Qiang,LI Xue-song,WANG Qi-wei,GUO Yong,LIU Shu-juan |
1.中国石化胜利油田分公司地质科学研究院;2.中国科学院兰州化学物理研究所西北特色植物资源化学重点实验室甘肃省天然药物重点实验室 |
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| Abstract: |
| The polydopamine,formed by spontaneous oxidative polymerization of dopamine,was introduced onto the inner surface of capillary,and then exploited as an adhesive coating to prepare TiO2 coated capillary column by assisting liquid phase deposition process of ammonium fluotitanate which was used as precursor of titanium dioxide.The method had the advantages of facile preparation process,operation under mild reaction conditions and the formation of a stable coating.The titanium dioxide coating was characterized by X ray photoelectron spectroscopy(XPS) and scanning electron microscope(SEM).A comparative study of electroosmotic flow(EOF) was also investigated.Five common inorganic anions and three alkaloids were selected as the test analytes.Effects of several factors,such as composition of background electrolytes(BGEs),buffer concentration and pH value,on separation performance were investigated.The results showed that,under the optimal conditions,both five inorganic anions and three alkaloids could be well separated. |
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