TITLE

Voltammetry of lead cations on a new type of silver composite electrode in the presence of other cations

AUTHOR(S)
Navrátil, Tomáš; Šebková, Světlana; Kopanica, Miloslav
PUB. DATE
May 2004
SOURCE
Analytical & Bioanalytical Chemistry;May2004, Vol. 379 Issue 2, p294
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A new type of silver composite electrode was examined, prepared from silver, graphite powder, and methacrylate resin. The effects of the presence of various cations (cadmium, copper, bismuth, thallium), anions (chlorides), surface-active substances (Triton X-100), and oxygen on the anodic-stripping voltammetric determination of lead were studied. It was found that the effect of underpotential deposition at the composite electrode differs from that produced at a metallic silver electrode, mainly at low concentrations of the deposited metal. The use of this type of silver composite electrode in differential pulse anodic-stripping voltammetry enables direct determination of lead in natural water samples without elimination of surface-active substances (LOD about 3 μg L-1).
ACCESSION #
15125073

 

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