A novel sensor based on carbon supported BiSn alloy nanoparticles (BiSn@C) was prepared for the sensitive detection of Cd. The BiSn@C and Nafion modified glassy carbon electrode (GCE) exhibited improved electrochemical performance in Cd 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 Cd 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 Cd in river samples with satisfying recoveries using the standard addition method.
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| http://dx.doi.org/10.1016/j.talanta.2019.04.066 | DOI Listing |
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