Related Experiment Video
Updated: Nov 4, 2025

Anaerobic Protein Purification and Kinetic Analysis via Oxygen Electrode for Studying DesB Dioxygenase Activity and Inhibition
Published on: October 3, 2018
Electroanalytical metal sensor with built-in oxygen filter
Elise Rotureau1, Julius Gajdar2, Grégoire Herzog3
1Université de Lorraine and CNRS, LIEC, UMR7360, Nancy, France.
Abstract:
A rapid and reliable oxygen elimination system was evaluated here for the electroanalytical study of metals. Dissolved oxygen was removed locally in the vicinity of a sensor by the means of electrochemical oxygen filter constructed from platinum grids. Three metals (Cd, Pb, and Zn) were determined by stripping chronopotentiometry (SCP) at a mercury film screen-printed electrode. Limits of detection of metals were in the nanomolar range under optimized experimental conditions. The electrochemical device was also tested for metal quantification in simple electrolyte solutions and in a natural water matrix. The proposed combination of oxygen elimination system with the metal sensor completely removes the need to purge the sample before SCP measurement. This makes the determination of metals by SCP faster, portable and more suited for on-field applications.
Related Concept Videos
Amperometry: Overview
Potentiometry: Membrane Electrodes
Electrodeposition
Electrodeposition can...

