【作者】 张培培； 庄韦； 陈强； 吴顺； 郝卫强；

【Author】 ZHANG Pei-pei;ZHUANG Wei;CHEN Qiang;WU Shun;HAO Wei-qiang;School of Petrochemical Engineering Changzhou Uniuersity;Changzhou High Technology Research institute of Nanjing University;Key laboratory of Cigarette smoke Research,CNTC,Shanghai Tobacco group co.,Lid.;

【机构】 常州大学石油化工学院； 常州南京大学高新技术研究院； 上海烟草集团有限责任公司烟草行业卷烟烟气重点实验室；

【摘要】 以粒径10μm硅胶为基质,与1,6-六亚甲基二异氰酸酯和十二醇反应制得新型C₁₈反相色谱固定相。热失重结果表明,所制得的固定相在200℃以内热稳定性良好。扫描电镜结果表明:硅胶在改性前后没有损坏,颗粒完整,适合于色谱柱的填装。该固定相对联苯的静态吸附在4h时达到平衡,吸附行为符合Langmuir吸附等温式。用芳香烃和极性化合物对固定相的分离性能进行评价,结果表明所合成的固定相具有良好的色谱性能。更多还原

【Abstract】 Novel C₁₈ stationary phase for reversed-phase chromatography was prepared through the reactionof1,6-diisocyanatocyclohexane and dodecanol with silica gel（φ10μm） as matrix.It was shown by the result of thermogravimetry,the stationary phase behaved to have good thermal stability below 200℃.As shown by the result of SEM,the silica gel was kept undamaged before and after denaturing and was suitable for packing into the chromatographic column.It was found that the static adsorption of biphenyl on the stationary phase attained to equilibrium after 4h.The adsorption behavior of the stationary phase was found to conform with the Langmuir isotherm.The separation capability of the stationary phase was evaluated by using aromatic and polar compounds as sample.It was shown that the stationary phase displayed good chromatographic properties.更多还原