Simultaneous Electrochemical Detection of Pb and Cd by Carbon Paste Electrodes Modified by Activated Clay.

Calcinated and acidified clay modified carbon graphite electrode was deployed in the simultaneous evaluation of traces of Pb and Cd in solution. After 5 minutes of accumulation in the circuit, the sensitivity of the electrode was evaluated in a solution of NaSO (0.1 M) by square wave voltammetry on the one hand with Pb (II) and on the other hand with Cd (II).