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Updated: Jun 28, 2026

Precise Electrochemical Sizing of Individual Electro-Inactive Particles
Published on: August 4, 2023
Analyte preconcentration and separation from small volumes by electrodeposition for electrothermal atomic absorption
1Department of Chemistry, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
Abstract:
Electrodeposition of Pb from 50 mul volumes of 0.1M KCl solution was studied by electrolysis at uncontrolled potentials of 4.0-6.0 V on a pyrolytic graphite platform cathode. Deposition efficiency was evaluated as a function of time by ASV measurements on aliquots of the electrolysed solution. Quantitative separation of the analyte from the matrix was achieved in a relatively short time, aided by convective stirring of the sample achieved through gas evolution. Thus, the feasibility of rapid electrodeposition directly in a pyrolytic graphite-coated furnace has been demonstrated, allowing construction of an automated electrodeposition-electrothermal atomic absorption spectroscopic system.
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