Hg(II) voltammetry on a 1,5‐diphenylcarbazide containing carbon paste electrode

The differential pulse voltammetric determination of Hg(II) at a carbon past electrode modified by 1,5‐diphenylcarbazide is described. Voltammetry of Hg(II) on various types of modified electrodes in 0.1 M KSCN (pH = 2) was studied. A detection limit 5 × 10−9 M was achieved at the carbon paste electrode containing 5% of 1,5−diphenylcarbazide in this background electrolyte.