Stripping Analysis of Trace Arsenic Based on the MnOx/AuNPs Composite Film Modified Electrode in Alkaline Media |
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| Authors: | Shouguo Wu Qiping Zhao Lei Zhou Zhixin Zhang |
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| Affiliation: | Department of Chemistry, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | A simple, rapid fabricated and sensitive modified electrode for detection of As(III) in alkaline media was proposed. The modified electrode was prepared by co‐electrodeposition of manganese oxides (MnOx) and gold nanoparticles (AuNPs) on the glassy carbon electrode (GCE) with cyclic voltammetry. Linear sweep anodic stripping voltammetry (LS‐ASV) was employed for the determination of arsenic (III) without interference from Cu(II), Hg(II), and other coexisting metal ions. A lower detection limit of 0.057 µg L?1 (S/N=3) were obtained with a accumulation time of 200 s. The proposed method was successfully applied to determine arsenic (III) in real water samples with satisfactory recoveries. |
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| Keywords: | Arsenic Anodic stripping voltammetry MnOx/AuNPs composite film Modified electrode |
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