Related Experiment Video
Updated: Mar 24, 2026

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
Published on: December 17, 2018
Determination of groundwater mercury (II) content using a disposable gold modified screen printed carbon electrode
Issa Touridomon Somé1, Abdoul Karim Sakira2, Dominique Mertens3
1Université de Ouagadougou (UO), Laboratoire de Chimie Analytique et de Toxicologie, Laboratoire de Toxicologie, Environnement et Santé, Ecole Doctorale de Santé, 03 BP 7021 Ouaga 03, Burkina Faso.
Abstract:
Mercury (II) measurements were performed thanks to a newly developed electrochemical method using a disposable gold modified screen printed carbon electrode. The method has a wide dynamic range (1-100 µg/L), a good accuracy and a limit of detection in compliance with WHO standards. The application of the method to several groundwater samples made it possible to identify, for the first time, mercury content higher than the recommended WHO standard value in a gold mining activity area in the northern part of Burkina Faso. The accuracy of the assay was checked by ICP/MS.
More Related Videos
09:15Iridium Oxide-reduced Graphene Oxide Nanohybrid Thin Film Modified Screen-printed Electrodes as Disposable Electrochemical Paper Microfluidic pH Sensors
Published on: November 22, 2016
10:48Electrochemical Preparation of Poly3,4-Ethylenedioxythiophene Layers on Gold Microelectrodes for Uric Acid-Sensing Applications
Published on: July 28, 2021
Related Concept Videos
Voltammetric Techniques: Linear-Scan (E vs Time)
Voltammetry: Overview
A voltammetric cell uses three electrodes: a working electrode, a reference electrode, and an auxiliary electrode. The redox reactions occur in the working...
Voltammetry: Stripping Methods
Anodic Stripping Voltammetry (ASV)
ASV is used to determine metals and metalloids at trace levels. It involves two steps: deposition and stripping. First, a negative potential is applied to the...
Potentiometry: Types of Electrodes
The Standard Hydrogen Electrode (SHE) is a widely used reference electrode that maintains zero potential across all temperatures. However, its need for a continuous hydrogen gas supply renders it impractical for everyday use.
An alternative to SHE is the Saturated Calomel Electrode (SCE). This electrode features an...
Electrodeposition
Electrodeposition can...
Controlled-Potential Coulometry: Electrolytic Methods
The chosen potential...