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A Cobalt Film Electrode for Nitrite Determination in Natural Water
Author(s) -
Soropogui Koïkoï,
Sigaud Monique,
Vittori Olivier
Publication year - 2007
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.200704008
Subject(s) - nitrite , electrode , cobalt , detection limit , ion , chemistry , inorganic chemistry , analytical chemistry (journal) , nitrate , chromatography , organic chemistry
In this study a cobalt film electrodeposited on a copper disk (Ø=3.1 mm) was tested as electrode to measure nitrite ions in raw water. This electrode was able to determine the nitrite ions concentration in nondeaerated synthetic media and in natural water. The electrode reached a detection limit of 0.2 μmol L −1 and has a linear concentration range of 0.4 to 2 μmol L −1 NO 2 − . The influence of several ions such as NO 3 − , Cl − , SO 4 2− , Mg 2+ , HCO 3 − and NH 4 + was also tested. The electrode was used to determine the concentration of nitrite ions in a real sample.