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Characterization of a Copper Detecting Amperometric Electrode
Author(s) -
Frey HansHelmut,
McNeil Calum J.,
Keay Russell W.,
Bannister Joe V.
Publication year - 1998
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/(sici)1521-4109(199806)10:7<480::aid-elan480>3.0.co;2-f
Subject(s) - copper , detection limit , amperometry , anodic stripping voltammetry , stripping (fiber) , electrode , chemistry , metal , voltammetry , inorganic chemistry , materials science , analytical chemistry (journal) , electrochemistry , chromatography , metallurgy , composite material
A tetraphenylporphyrin (TPP) coated glassy carbon electrode (GCE) was used for anodic stripping voltammetry (ASV) of heavy metals. It showed an increase in sensitivity for the detection of copper compared to an uncoated electrode. The influence of TPP layer thickness, pH and accumulation time on the copper detection and the interference with other cations was investigated. The detection limit of copper following a short accumulation time of 30 s was 12 ppb. Using longer accumulation times, the detection limit can be reduced to lower concentrations of the metal.