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A nonionic poly(2-amino-5-mercapto-thiadiazole) film was electrodeposited on a solid carbon paste electrode via a potential scanning procedure, and used for amperometric sensing of ascorbic acid (AA), dopamine (DA) and serotonin (ST). The highly electrocatalytic activity of the sensor to the three analytes was demonstrated from the sensitive and well separated voltammetric signals. The polymer film...
The present work reports a quercetin-modified wax-impregnated graphite electrode (Qu/WGE) prepared through an electrochemical oxidation procedure in quercetin-containing phosphate buffer solution (PBS), for the purpose of detecting uric acid (UA) in the presence of ascorbic acid (AA). During modification quercetin was oxidized to the corresponding quinonic structure, and in the blank buffer solution...
A novel poly rutin (Ru) modified paraffin-impregnated graphite electrode (WGE) was fabricated by electrochemical method. The field emission scanning electron microscope (FE-SEM), infrared spectra (IR), in situ UV-spectroelectrochemical and electrochemical techniques proved the immobilization of rutin on WGE. Ru undergoes electrochemical oxidation in two ways related to the two catechol hydroxyl groups...
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