Electroanalytical performance of a Bismuth/Antimony composite glassy carbon electrode in detecting lead and cadmium |
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| Authors: | Grace W Muna Emily Barrera Lucas Robinson Hiba Majeed Keon Jones Abigail Damschroder Andrew Vila |
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| Institution: | Department of Chemistry and Biochemistry, Indiana University, South Bend, 46634 IN |
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| Abstract: | This work reports on the electroanalytical performance of a glassy carbon electrode (GCE) modified with antimony and bismuth (Sb/Bi-GCE) in detecting heavy metal ions using lead and cadmium as model analytes. The electroanalytical performance of the Sb/Bi-GCE surface was compared to the bismuth modified glassy carbon electrode (Bi-GCE) as well as the antimony modified glassy carbon electrode (Sb-GCE). The Sb/Bi-GCE exhibited excellent figures of merit compared to Bi-GCE and Sb-GCE surfaces. For example, the limit of detection for lead was 0.01 ppb using Sb/Bi-GCE and 0.1 and 1 ppb on Bi-GCE and Sb-GCE, respectively. |
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| Keywords: | antimony bismuth differential pulse anodic stripping voltammetry electrodeposition scanning electron microscopy |
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