Stripping voltammetric determination of iodide with synergistic accumulation at a carbon paste electrode

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F98%3A00003868" target="_blank" >RIV/00216275:25310/98:00003868 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Stripping voltammetric determination of iodide with synergistic accumulation at a carbon paste electrode

Original language description

Carbon paste electrodes (CPEs) of various compositions were studied to elucidate the stripping voltammetric behavior of iodide. At an accumulation potential of +0.7 V (vs. Ag/AgCl), the CPE containing tricresyl phosphate as a pasting liquid was able to preconcetrate iodide effectively via ion-pairing reaction followed by oxidation to iodine and its extraction onto pasting liquid. In a supporting electrolyte containing 0.5 M NaCl and 0.1 M HCl, the reduction signal was proportional to iodide concentration from 5 x 10(-6) to 5 x 10(-7) mol/L with a detection limit of approximately 2.5 x 10(-7) mol/L (accumulation for 5 min). Other halides and pseudohalides did not interfere with the determination, except for a high concentration excess of thiocyanate andbromide (100:1). The method was tested on model solutions and was applied to determine total iodine in samples of table salts and mineral water. The results were compared to those obtained by reference methods.

Czech name

Stanovení jodidů s využitím kombinovaného mechanismu akumulace na uhlíkové pastové elektrodě metodou stripping voltametrie

Czech description

Stanovení jodidů s využitím kombinovaného mechanismu akumulace na uhlíkové pastové elektrodě metodou stripping voltametrie

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DJ - Pollution and water control

OECD FORD branch

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Project

<a href="/en/project/OE37%2F1" target="_blank" >OE37/1: Cheap electrochemical sensors for determination of toxic species in polluted waters</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

1998

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Electroanalysis

ISSN

1040-0397

e-ISSN

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Volume of the periodical

10

Issue of the periodical within the volume

6

Country of publishing house

DE - GERMANY

Number of pages

7

Pages from-to

435-441

UT code for WoS article

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EID of the result in the Scopus database

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