Study of conditions for voltammetric determinations of iodine at carbon paste electrodes
ČlánekOtevřený přístuppeer-reviewedpublishedDatum publikování
1997
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Univerzita Pardubice
Abstrakt
A method has been developed for the determination of iodine in the form of iodide at a carbon paste electrode (CPE) with tricresyl phosphate as a pasting liquid using differential pulse cathodic stripping voltammetry. The determination is based on the combined preconcentration mechanism of iodide anions from acidic media, probably forming ion-pairs with protonated molecules of a pasting liquid, then oxidizing to iodine at +0.7 V (vs. Ag/AgCl) and extracting onto a CPE. The detection limit of 30 µg l−1 was obtained. The procedure was successfully applied to analyse real samples of mineral water and table salts containing either iodide or iodate. The results were verified by means of reference methods, e.g. ICP-MS technique, recovery determinations and iodometric titrations.
Rozsah stran
p. 153-162
ISSN
1211-5541
Trvalý odkaz na tento záznam
Projekt
Zdrojový dokument
Scientific papers of the University of Pardubice. Series A, Faculty of Chemical technology. 3(1997)
Vydavatelská verze
Přístup k e-verzi
open access
Název akce
ISBN
Studijní obor
Studijní program
Signatura tištěné verze
47333-3
Umístění tištěné verze
Univerzitní knihovna (studovna)