Substitution of Mercury Electrodes by Bismuth-Coated Screen- Printed Electrodes in the Determination of Quinine in Tonic Water

摘要

The bismuth-coated screen-printed electrode is shown to be a suitable and safe alternative to the classical mercury electrode in the voltammetric determination of quinine in tonic water. This experiment is appropriate for undergraduate analytical courses as it helps students understand the fundamentals of electroanalysis using preplated screenprinted electrodes and the importance of green electrochemistry. Student interest is piqued by using a familiar real-world sample, tonic water.