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A Lead Film Electrode for Adsorptive Stripping Voltammetric Analysis of Ultratrace Tungsten(VI) in Acidic Medium
Author(s) -
TyszczukRotko Katarzyna,
Maj Joanna
Publication year - 2012
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.201100436
Subject(s) - adsorptive stripping voltammetry , stripping (fiber) , electrode , anodic stripping voltammetry , voltammetry , chemistry , tungsten , square wave , analytical chemistry (journal) , inorganic chemistry , electrochemistry , chromatography , materials science , physics , organic chemistry , composite material , voltage , quantum mechanics
For the first time an in situ plated lead film electrode was applied to adsorptive stripping voltammetry at relatively strong acidic conditions of, e.g., pH 2. As an example of the application of such electrode a procedure for ultratrace W(VI) determination by adsorptive stripping voltammetry was elaborated. The procedure is based on the preconcentration of the W(VI)‐Alizarin Red S complex at an in situ plated lead film electrode held at −0.575 V (vs. Ag/AgCl), followed by a negatively sweeping square wave voltammetric scan. The proposed voltammetric procedure was applied to W(VI) determination in natural water samples.