Related Experiment Video
Updated: Jul 14, 2026

An Anaerobic Biosensor Assay for the Detection of Mercury and Cadmium
Published on: December 17, 2018
Sensitive capillary electrophoretic determination of mercury species with amperometric detection at a copper
Petr Kubán1, Pavlína Houserová, Pavel Kubán
1Department of Chemistry and Biochemistry, Mendel University of Agriculture and Forestry, Brno, Czech Republic. kuban0@mendelu.cz
Abstract:
A capillary electrophoretic method for the separation of four mercury species with amperometric detection was developed. Inorganic Hg2+, methyl-, ethyl-, and phenyl-mercury were complexed with L-cysteine and separated in a counterelectroosmotic mode in an electrolyte solution comprised of 20 mM sodium tetraborate at pH 9.5. Amperometric detection of separated species was achieved at passivated copper electrode under electrocatalytic oxidation conditions. The four mercury species were separated in less than 8 min with LODs ranging from 170 to 450 microg/L. Cation exchange preconcentration was used to decrease the LODs down to 1.7 microg/L.
Related Concept Videos
Capillary Electrophoresis: Instrumentation
Capillary Electrophoresis: Applications
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Electrodeposition
Electrodeposition can...
Ion-Exchange Chromatography
Voltammetric Techniques: Linear-Scan (E vs Time)
Electrophoresis: Overview
There...
