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Updated: Jan 23, 2026

Dynamic Electrochemical Measurement of Chloride Ions
Published on: February 5, 2016
A carbon-supported BiSn nanoparticles based novel sensor for sensitive electrochemical determination of Cd (II) ions
Yongjia Chen1, Dongtang Zhang1, Dumei Wang1
1Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, 100124, PR China.
Abstract:
A novel sensor based on carbon supported BiSn alloy nanoparticles (BiSn@C) was prepared for the sensitive detection of Cd2+. The BiSn@C and Nafion modified glassy carbon electrode (GCE) exhibited improved electrochemical performance in Cd2+ detection, because of its large specific surface area, abundance of active sites, good electrical conductivity, and strong cation exchange ability. Under the optimum conditions, the fabricated sensor showed good linearity of its response from 0.01 μmol/L to 30 μmol/L for the detection of Cd2+ and a limit of detection (LOD) of 3 nmol/L, which is considerably lower than the limit specified for safe drinking water as guided by the World Health Organization. The Nafion/BiSn@C/GCE was successfully applied for determination for trace Cd2+ in river samples with satisfying recoveries using the standard addition method.
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