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Application of Square Wave Anodic Stripping Voltammetry for Determination of Traces of Ti(I) at Carbon Electrodes In Situ Modified with Bi Films
Author(s) -
Caldeira Alexandra,
GouveiaCaridade Carla,
Pauliukaite Rasa,
Brett Christopher M. A.
Publication year - 2011
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.201100018
Subject(s) - electrode , stripping (fiber) , anodic stripping voltammetry , bismuth , detection limit , square wave , analytical chemistry (journal) , electrochemistry , glassy carbon , materials science , carbon fibers , voltammetry , substrate (aquarium) , cyclic voltammetry , anode , buffer solution , inorganic chemistry , chemistry , chromatography , metallurgy , composite number , physics , oceanography , composite material , voltage , quantum mechanics , geology
Bismuth films deposited in situ at glassy carbon and carbon film electrodes were tested for the determination of traces of Tl(I) separately and together with Zn(II) and Pb (II), in acetate buffer solution pH 3.7, using square wave anodic stripping voltammetry. Electrochemical impedance spectra in the presence of Tl(I) showed differences between the electrode substrates. The sensitivity to Tl does not depend on the presence of other ions, and was better at carbon film electrodes, although the 2 nmol L −1 detection limit was independent of electrode substrate. Application to the measurement of Tl(I) in commercial berry juice is demonstrated.