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Polyethylene glycol (PEG) serves as a novel matrix in capillary electrophoresis. The purpose of this work was to explore some evidence for hydrogen-bonding complex formation between analytes and PEG in the separation system using benzoic acids as model analytes. An increase in the column temperature resulted in a significant decrease in the interaction between PEG and substituted benzoic acids with...
Hydrogen peroxide based amperometric microsensors have been developed for choline (Ch) and acetylcholine (Ach) by coimmobilization of acetylcholinesterase (AchE) and choline oxidase (ChO) on platinum disk microelectrodes using glutaraldehyde vapor. The sensor was applied in micro flow injection and micro liquid chromatographic analyses. The chromatographic peak heights were linearly proportional...
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