Ethanol determination using pressure mobilization and free solution capillary electrophoresis by photo-oxidation assisted ultraviolet detection.Free solution capillary electrophoresis (CE) can separate and quantify carbohydrates using a simple direct UV detection based on a photo-oxidation reaction taking place in the detection window without any labeling.  We thus present the first detection and quantification of ethanol using either a simple pressure mobilization set-up or CE.  Ethanol can be detected down to 34.9mgL(-1) and quantified in the range 117-1850mgL(-1) through the interference with photo-oxidization of 2gL(-1) sucrose.  CE can thus separate and quantify both carbohydrates and ethanol, for example to monitor a lignocellulosic fermentation process. 
CE
Ethanol determination using pressure mobilization and free solution capillary electrophoresis by photo-oxidation assisted ultraviolet detection.Free solution capillary electrophoresis (CE) can separate and quantify carbohydrates using a simple direct UV detection based on a photo-oxidation reaction taking place in the detection window without any labeling. 
UV detection
Ethanol determination using pressure mobilization and free solution capillary electrophoresis by photo-oxidation assisted ultraviolet detection.Free solution capillary electrophoresis (CE) can separate and quantify carbohydrates using a simple direct UV detection based on a photo-oxidation reaction taking place in the detection window without any labeling.  Ethanol interferes with this photo-oxidation reaction. 
photo-oxidation reaction