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Electrochemical Detection of Melamine
Author(s) -
Xue J.,
Lee P. T.,
Compton R. G.
Publication year - 2014
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.201400166
Subject(s) - melamine , hydroquinone , caffeic acid , aqueous solution , electrochemistry , chemistry , cyclic voltammetry , detection limit , monomer , electrode , glassy carbon , voltammetry , inorganic chemistry , polymer , nuclear chemistry , organic chemistry , chromatography , antioxidant
Poly(caffeic acid) polymer was immobilized onto the surface of a glassy carbon electrode via electropolymerization. Voltammetry shows a signal related to the two‐electron oxidation of the immobilized hydroquinone groups in the caffeic acid monomer units. The modified electrode in aqueous solution shows complexation of the electrogenerated o‐ quinone species with melamine thus allowing in the electrochemical detection of melamine by recording the shift in potential of the oxidation signal of the polymer. Melamine detection was investigated in pure aqueous solutions and in the presence of milk powder solutions and the proposed analytical method of melamine detection in milk powder was applied successfully with an average recovery of ca. (91±7.9)%.