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Characterization and Application of Bismuth-Film Modified Carbon Film Electrodes

✍ Scribed by Rasa Pauliukaitė; Christopher M. A. Brett

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
92 KB
Volume
17
Category
Article
ISSN
1040-0397

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✦ Synopsis

Abstract

Bismuth film electrodes, formed by electrochemical deposition on carbon film resistor electrode substrates at constant applied potential, by potential cycling or at constant applied current have been investigated for the first time. The electrochemical behaviour of the films was characterised by cyclic voltammetry and electrochemical impedance spectroscopy and they were applied to the determination of Zn, Cd, and Pb by square‐wave anodic stripping voltammetry. The highest sensitivities coupled with nanomolar detection limits were achieved at bismuth films formed at constant potential; however, in situ deposited bismuth films exhibited better reproducibility. Future application as small, short‐term‐use sensors is indicated.

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✍ Ferenc Torma; Alajos Grün; Isván Bitter; Klára Tóth 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 172 KB 👁 1 views

## Abstract This paper presents an enhanced adsorptive stripping voltammetric procedure (AdSV) for the determination of Pb^2+^, which relies on the accumulation of the metals at a calixarene‐based chemically modified bismuth‐film electrode on glassy carbon substrate. Following the accumulation of t