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We examined the use of a bismuth–glassy carbon (Bi/C) composite electrode for the determination of trace amounts of lead and cadmium. Incorporated bismuth powder in the composite electrode was electrochemically dissolved in 0.1M acetate buffer (pH 4.5) where nanosized bismuth particles were deposited on the glassy carbon at the reduction potential. The anodic stripping voltammetry on the Bi/C composite...
By combining a screen-printing method with an electrochemical reduction process, an electrochemical sensor to measure trace amounts of lead and cadmium was newly designed, fabricated and characterized. Bismuth oxide was printed on the electrode surface, and it was then electrochemically reduced to bismuth at a potential of −1.2V in 0.1M KOH. The stability of the fabricated Bi electrode was evaluated...
A bismuth-modified carbon nanotube electrode (Bi-CNT electrode) was employed for the determination of trace lead, cadmium and zinc. Bismuth film was prepared by in situ plating of bismuth onto the screen-printed CNT electrode. Operational parameters such as preconcentration potential, bismuth concentration, preconcetraion time and rotation speed during preconcentration were optimized for the purpose...
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