Digitální knihovnaUPCE
 

Carbon paste electrode modified with thiourea-functionalized resin for determination of lead

ČlánekOtevřený přístuppeer-reviewedpublisher's version
Náhled

Datum publikování

2009

Vedoucí práce

Oponent

Název časopisu

Název svazku

Vydavatel

University of Pardubice

Abstrakt

In this contribution, a carbon paste electrode modified with thiourea-functionalised resin is described in terms of its electroanalytical characterisation and applicability to the determination of Pb2+ ions. Commercial macroporous resin, QuadraPure(TM)TU, added to the carbon paste mixture in an amount of 30% (v/v), contains thiourea residual groups being able of effectively complexing the Pb2+ ions. When using the SWV mode in combination with open-circuit accumulation, intermediate electrolytic reduction, and subsequent anodic stripping step, the resultant signal for lead could be calibrated within a very wide concentration range of 5–25 000 μg L−1 Pb2+, with a limit of detection (3 sigma) of about 1 μg L−1, and without serious interferences from other heavy metal ions as confirmed in special studies. Practical usefulness of the method has been tested on selected water samples and the respective results verified by means of recovery rates, certified reference material, and ICP-MS reference determinations.

Rozsah stran

p. 5–27

ISSN

1211-5541

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Projekt

Zdrojový dokument

Scientific papers of the University of Pardubice. Series A, Faculty of Chemical Technology. 15/2009

Vydavatelská verze

Přístup k e-verzi

open access

Název akce

ISBN

978-80-7395-239-6

Studijní obor

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Signatura tištěné verze

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Klíčová slova

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