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Separation of Biphenyl Nitrile Compounds by microemulsion electrokinetic chromatography with Mixed Surfactants

Chinese Chemical Letters 2004年第9期15卷 1063-1066页

作者： SuXuanGONG TaoBO LanHUANG KeAnLI HuWeiLIU KeyLaboratoryofBioorganicChemistryandMolecularEngineeringofMinistryofEducation CollegeofChemistryandMolecularEngineeringPekingUniversityBeijing100871

A mixture of nine biphenyl nitrile compounds with high hydrophobicity and similar structures was successfully separated by microemulsion electrokinetic chromatography (MEEKC) within 30 min. The buffer system contained 100 mmol/L sodium dodecyl sulfate (SDS), 80 mmol/L sodium cholate (SC), 0.81% heptane, 7.5% n-butanol, 10% acetonitrile and 10 mmol/L borate. The addition of SC, organic modifiers, sample preparation and temperature all showed remarkable effect on the separation. Meanwhile, the MEEKC method was briefly compared with micellar electrokinetic chromatography (MEKC) method.

关键词： microemulsion electrokinetic chromatography separation mixed surfactant biphenyl nitrile compounds micellar electrokinetic chromatography .

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Optimized Separation of Nine Xanthones by microemulsion electrokinetic chromatography

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Chinese Chemical Letters 2002年第9期13卷 877-880页

作者： Tao BO Hu Wei LIU Ke An LI Chemistry Department Peking UniversityBeijing 100871

A microemulsion electrokinetic chromatography method has been firstly used for the separation of the therapeutically important xanthones from Securidaca inappendiculata. The separation of the nine xanthones was systematically optimized with respect to pH, composition of microemulsion, addition of cyclodextrins, applied voltage and column temperature. Baseline separation was successfully achieved for the nine xanthones, which was also compared with that by micellar electrokinetic chromatography.

关键词： Separation xanthones Securidaca inappendiculata microemulsion electrokinetic chromatography micellar electrokinetic chromatography.

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Simultaneous Determination of Heroin,Amphetamine and their Basic Impurities and Adulterants Using microemulsion electrokinetic chromatography

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Chinese Chemical Letters 2005年第11期16卷 1499-1502页

作者： Tao WEN Xia ZHAO Guo An LUO Jian WANG Yi Ming WANG Pan LI Jun ZHU Zhong Shang YU Department of Chemistry Tsinghua University Beijing 100084 Forensic Medical Examination Center of Beijing Public Security Bureau Beijing 100085 Department of Science ＆ Technology Public Security Ministry Beijing 100741 Institute of Forensic Science Ministry of Public Security P.R.C. Beijing 100038

Simultaneous separation of 17 species of heroin, amphetamine and their basic impurities and adulterants was conducted within 10 minutes by using capillary microemulsion electrokinetic chromatography. The influences of pH and 1-butanol cosurfactant on the separation were investigated, and 1-butanol was found to be a principal factor to improve separation efficiency.

关键词： Heroin amphetamine microemulsion electrokinetic chromatography determination.

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