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Adsorptive stripping voltammetry of cobalt and nickel in flow systems at wall‐jet electrodes
Author(s) -
Brett Christopher M. A.,
Oliveira Brett Ana Maria C. F.,
Pereira Jorge L. C.
Publication year - 1991
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.1140030715
Subject(s) - dimethylglyoxime , cobalt , adsorptive stripping voltammetry , electrode , anodic stripping voltammetry , nickel , analytical chemistry (journal) , voltammetry , chemistry , ammonium perchlorate , supporting electrolyte , dropping mercury electrode , mercury (programming language) , electrolyte , cyclic voltammetry , materials science , inorganic chemistry , electrochemistry , chromatography , catalysis , computer science , programming language , biochemistry , organic chemistry
Adsorptive stripping voltammetry of cobalt and nickel in flow systems at wall‐jet mercury thin‐film electrodes has been investigated and assessed. A HEPES biological buffer with sodium perchlorate electrolyte was employed with excess nioxime, or dimethylglyoxime, ligand, and the accumulated complex on the mercury film surface determined by differential pulse reduction. Concentrations down to 1 nM can be routinely measured. Results at the wall‐jet electrode, supported by evidence from LSV and impedance measurements at rotating and stationary electrodes respectively, show the viability of the method.