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Electrochemical Morphine Sensor Based on Gold Nanoparticles Metalphthalocyanine Modified Carbon Paste Electrode
Author(s) -
Atta Nada F.,
Galal Ahmed,
AbdelGawad Fatma M.,
Mohamed Eman F.
Publication year - 2015
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.201400464
Subject(s) - ascorbic acid , electrochemistry , electrode , detection limit , phthalocyanine , carbon paste electrode , carbon fibers , electrolyte , materials science , moiety , metal , electrochemical gas sensor , nanoparticle , colloidal gold , inorganic chemistry , nuclear chemistry , chemistry , cyclic voltammetry , organic chemistry , nanotechnology , chromatography , metallurgy , composite material , composite number , food science
Composites of gold nanoparticles (Au) electrochemically deposited and different metal phthalocyanines (Co, Ni, Cu, and Fe) were chemically prepared. The composites were used as modifiers for carbon paste electrodes and were used for the determination of morphine in presence of ascorbic acid and uric acid. Central metal atoms of phthalocyanine moiety affected the rate of electron transfer. Thus, the electroactivity of different modifiers were evaluated towards morphine oxidation. Au‐CoPcM‐CPE possessed the highest rate for charge transfer rate in all studied pH electrolytes. Limit of detection was 5.48×10 −9 mol L −1 in the range of 4.0×10 −7 to 9.0×10 −4 mol L −1 .