Pilot Experiments With a Micro-Volume Voltammetric Cell for the Determination of Electrochemically Reducible Organic Compounds
Abstract
A new micro-volume voltammetric cell for analysis of small volumes of electrochemically reducible organic compounds was developed and tested. The sample (20-100 μL) is placed in a narrow glass tube with an agar membrane at the bottom and the working electrode is immersed into the sample.
The agar membrane, as an ion permeable layer, electrically connects the working electrode immersed in the analysed sample in the glass tube with a large-volume compartment (20 mL) filled with Britton-Robinson buffer,where conventional nonminiaturized reference and auxiliary electrodes are placed. The system was tested using a polished silver solid amalgam electrode (p-AgSAE) as a working electrode.
Sodium anthraquinone-2-sulfonatewas used as a model compound because it is intended to use this systemtomonitor electrochemically reducible organic compounds.