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Nitrite‐selective electrode based on an electropolymerized cobalt phthalocyanine
Author(s) -
Allen John R.,
Florido Antonio,
Young Shelley D.,
Daunert Sylvia,
Bachas Leonidas G.
Publication year - 1995
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.1140070803
Subject(s) - nitrite , cobalt , electrode , inorganic chemistry , detection limit , cyclic voltammetry , polymerization , chemistry , phthalocyanine , buffer solution , glassy carbon , materials science , electrochemistry , organic chemistry , chromatography , polymer , nitrate
Cobalt( II ) 4,4′,4″,4″′‐tetraaminophthalocyanine was electropolymerized on glassy carbon by cyclic voltammetry. The formed polymeric films were shown to interact selectively with anions and were used in the design of ion‐selective electrodes. Different polymerization conditions, as well as different conditioning solutions and buffer systems, were investigated in order to optimize the response of the electrodes. The electrodes were found to be most selective for nitrite. The slopes of the calibration plots were sub‐Nernstian and the detection limit for nitrite was 1.7 × 10 −4 M.