The Chemical Educator
ISSN: 1430-4171 (electronic version)
Abstract Volume 9
Issue 2 (2004) pp 91-96
Determination of Bismuth: A Mercury-Free Anodic Stripping Voltammetry Experiment
Steven C. Petrovic
Department of Chemistry, Southern Oregon University, Ashland, OR 97520,
Published online: 4 March 2004
Abstract. An anodic stripping voltammetry (ASV) experiment for the mercury-free determination of bismuth in an over-the-counter pharmaceutical product is described in this paper. A carbon-paste electrode (CPE) was used as a satisfactory replacement for mercury-based electrodes, which are commonly implemented for the determination of metal ions in ASV. The standard addition method was used in the determination of bismuth, which was present at the low part-per-million concentration level. Students also have the option of exploring the effect of scan rate, deposition time, and deposition potential on the ASV response at a CPE.
Key Words: Laboratories and Demonstrations; analytical chemistry; quantitative analysis; electroanalytical chemistry; anodic stripping voltammetry; carbon paste electrode; pharmaceutical; bismuth
(*) Corresponding author. (E-mail: firstname.lastname@example.org)
A copy of the laboratory handout (zipped pdf file 140 KB) is included as supporting documentation.
Issue date: April