Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1170023 | Analytica Chimica Acta | 2007 | 4 Pages |
Abstract
Sulphides in water samples were determined by stripping chronopotentiometry in a computer controlled flow system with a flow-through electrochemical cell. The working electrode was a porous glassy carbon electrode coated with Nafion and mercury. The sample was diluted with 0.1 mol Lâ1 NaOH and analysed. Sulphides in the sample were collected in the porous electrode as mercury sulphide and then stripped by a current of â500 μA. The limit of detection was found to be 1.6 μg Lâ1 and 0.5 μg Lâ1 for 1 mL and 5 mL of preconcentrated sample, respectively. The linear range for 1 mL sample was found to be 5-400 μg Lâ1. The repeatability and reproducibility was found to be 2.6% and 4.8%, respectively. The method was applied to analyses of waste water samples from a tannery.
Related Topics
Physical Sciences and Engineering
Chemistry
Analytical Chemistry
Authors
A. Manova, M. Strelec, F. Cacho, J. Lehotay, E. Beinrohr,