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Article Abstract
It is necessary to detect cadmium ions in seawater with high sensitivity because the pollution of cadmium ions seriously endangers the health and life of human beings. Nano-FeO/MoS/Nafion modified glassy carbon electrode was prepared by a drop coating method. The electrocatalytic properties of Nano-FeO/MoS/Nafion were measured by Cyclic Voltammetry (CV). Differential Pulse Voltammetry (DPV) was used to study the stripping Voltammetry response of the modified electrode to Cd. The optimal conditions were determined: In 0.1 mol/L HAc-NaAc solution, the solution pH was 4.2, the deposition potential was - 1.0 V, and the deposition time was 720 s, the membrane thickness was 8 μL. Under the optimum condition, the linear relation of Cd concentration was found in the range of 5-300 μg/L, and the detection limit was 0.053 μg/L. The recovery of Cd in seawater ranged from 99.2 to 102.9%. A composite material with simple operation, rapid response and high sensitivity was constructed for the determination of Cd in seawater.
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| http://dx.doi.org/10.1007/s44211-023-00359-9 | DOI Listing |
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