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Flow-injection potentiometric determination of free cadmium ions with a cadmium ion-selective electrode
Citation
Trojanowicz, M and Alexander, PW and Hibbert, DB, Flow-injection potentiometric determination of free cadmium ions with a cadmium ion-selective electrode, Analytica Chimica Acta, 370, (2-3) pp. 267-278. ISSN 0003-2670 (1998) [Refereed Article]
DOI: doi:10.1016/S0003-2670(98)00275-X
Abstract
The determination of free cadmium ions with solid-state cadmium ion-selective electrode can be performed in non-flow measurements in non-buffered solutions in a wide concentration range down to pCd 10. In cadmium ion buffered solutions linear Nernstian response was obtained even down to pCd 12, which is lower, that expected based on calculation of cadmium solubility from the conditional solubility product. Interferences of trace amounts of Fe(III), Cu(II) and Pb(II) commonly present in natural waters in larger concentrations than Cd(II) can be eliminated by reduction with hydroxylamine, complexation with Neocuproine and ion-exchange on anion-exchange resin in sulphate form, respectively. The developed procedure might be suitable for the determination of activity of free cadmium ions in natural water. A preliminary study on this subject is demonstrated for river water sample using stopped-flow flow-injection system. Copyright (C) 1998 Elsevier Science B.V.
Item Details
Item Type: | Refereed Article |
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Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Instrumental methods (excl. immunological and bioassay methods) |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Alexander, PW (Professor Peter Alexander) |
ID Code: | 14338 |
Year Published: | 1998 |
Web of Science® Times Cited: | 28 |
Deposited By: | Applied Science |
Deposited On: | 1998-08-01 |
Last Modified: | 2011-08-09 |
Downloads: | 0 |
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