Application of Pulsed Techniques in Order to Decrease the Passivation in Amperometric Detection

Abstract

Possibility to prevent passivation of the working electrode was tested using sulfamethizole as a test compound, due to its high passivating power. It was found out that pulse amperometry decreases the passivation in comparison with classical amperometry with stable inserted potential.

Zero potential pulses and the decrease of the pulse time helped with the resistance towards the passivation.

Keywords

• pulsed amperometry
• passivation
• sulfamethizol