Preparation of organic-inorganic hybrid silica monolith with octyl and sulfonic acid groups for capillary electrochromatograhpy and application in determination of theophylline and caffeine in beverage

Journal of Chromatography A

Volumn 1217, Issue 21, 2010, Pages 3547-3556

  Chen, Ming Luan ^a   Zheng, Ming Ming ^a   Feng, Yu Qi ^a  

^a WUHAN UNIVERSITY   (China)

Author keywords

Beverage; Caffeine and theophylline; Capillary electrochromatograhpy; Organic inorganic hybrid silica monolith

Indexed keywords

3-MERCAPTOPROPYLTRIMETHOXYSILANE; BEVERAGE SAMPLES; CAFFEINE AND THEOPHYLLINE; CAPILLARY COLUMNS; CATION EXCHANGERS; COLUMN EFFICIENCY; DETECTION LIMITS; ELECTROOSMOTIC FLOW; ELEMENTAL ANALYSIS; FOURIER TRANSFORM INFRARED; HYBRID MONOLITHS; MONOLITHIC COLUMNS; ORGANIC-INORGANIC HYBRID; RELATIVE STANDARD DEVIATIONS; REPRODUCIBILITIES; SEM; SOL-GEL TECHNIQUE; SULFONIC ACID GROUPS; TETRAETHOXYSILANES;

CATALYST ACTIVITY; CHEMICAL ANALYSIS; ELECTROOSMOSIS; GELS; HYDROGEN PEROXIDE; INFRARED SPECTROSCOPY; MONOLITHIC INTEGRATED CIRCUITS; POLYMORPHISM; SCANNING ELECTRON MICROSCOPY; SILICA; THIOUREAS; UREA;

BEVERAGES;

CAFFEINE; HYDROGEN PEROXIDE; SILICON DIOXIDE; SULFONIC ACID DERIVATIVE; TETRAETHOXYSILANE; THEOPHYLLINE; THIOUREA;

ACCURACY; ARTICLE; BEVERAGE; CAPILLARY ELECTROCHROMATOGRAPHY; CARBONATED BEVERAGE; CATION EXCHANGE; CHEMICAL STRUCTURE; CONTROLLED STUDY; ELECTROOSMOSIS; FOOD ANALYSIS; INFRARED SPECTROSCOPY; OXIDATION; PH; PRIORITY JOURNAL; REPRODUCIBILITY; SCANNING ELECTRON MICROSCOPY; TEA;

ACETONITRILES; BEVERAGES; CAFFEINE; CAPILLARY ELECTROCHROMATOGRAPHY; ELECTROOSMOSIS; FOOD ANALYSIS; HYDROGEN-ION CONCENTRATION; INORGANIC CHEMICALS; LINEAR MODELS; MICROSCOPY, ELECTRON, SCANNING; ORGANIC CHEMICALS; PHASE TRANSITION; PHOSPHATES; REPRODUCIBILITY OF RESULTS; SENSITIVITY AND SPECIFICITY; SILICON DIOXIDE; SULFONIC ACIDS; THEOPHYLLINE;

EID: 77952554441     PISSN: 00219673     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.chroma.2010.03.032     Document Type: Article

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