硅醇
化学
亲水作用色谱法
热重分析
离子色谱法
柱色谱法
相(物质)
离子交换
红外光谱学
色谱法
烷基苯
离子
高效液相色谱法
有机化学
催化作用
作者
Min Sun,Hongdeng Qiu,Licheng Wang,Xia Liu,Shengxiang Jiang
标识
DOI:10.1016/j.chroma.2009.02.089
摘要
A new specific stationary phase based on poly(1-allylimidazole)-grafted silica has been synthesized and characterized, by infrared spectra, elemental analysis, thermogravimetric analysis and X-ray photoelectron spectroscopy. The results of test showed that poly(1-allylimidazole) can effectively mask the residual silanol groups and reduce the adverse effect of residual silanol. Using this stationary phase, phenol compounds, aniline compounds, and polycyclic aromatic hydrocarbons were successfully separated with symmetric peak shapes in the reversed-phase chromatography. Inorganic anions (IO3−, BrO3−, Br−, NO3−, I−, SCN−) were also separated completely in the anion-exchange chromatography using sodium chloride solution as the mobile phase. The effects of pH and the concentration of eluent on the separation of inorganic anions were studied. The separation mechanism appears to involve the mixed interactions of hydrogen bonding, hydrophobic, π–π, electrostatic, and anion-exchange interactions.
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