Electropolymerization of 4-aminobenzoic acid containing nano-Au deposited on carbon paste electrode for determination of acetaminophen
محورهای موضوعی : Journal of the Iranian Chemical Research
Yaping Ding
1
(Department of Chemistry, Shanghai University, Shanghai, P. R. China)
Ying Zhang
2
(Department of Chemistry, Shanghai University, Shanghai, P. R. China)
Liqiang Luo
3
(Department of Chemistry, Shanghai University, Shanghai, P. R. China)
Xiao Liu
4
(Department of Chemistry, Shanghai University, Shanghai, P. R. China)
کلید واژه: Acetaminophen, Poly (4-aminobenzoic acid), Nano-Au, Electrocatalysis,
چکیده مقاله :
The conducting polymer films have been widely applied in the field of electrochemistry owing to their goodstability, permselectivity, unique physical and chemical properties. A novel nano-Au/poly (4-aminobenzoicacid) (PABA) film modified carbon paste electrode was fabricated for sensitive detection of acetaminophenin this paper. The PABA film and nano-Au/PABA film were characterized by scanning electron microscope.The nano-Au/PABA film exhibited obviously catalytic performance to the determination of acetaminophenwith a high sensitivity and a wide linear range. Under optimum conditions (pH, the concentration of 4-aminobenzoic acid, electro-polymerization cycles), linearity between the oxidation peak current and theacetaminophen concentration was obtained in the range of 1.0 × 10–7 – 8.0 × 10–5 mol L-1 with a detectionlimit of 8.0 × 10–8 mol L-1 (S/N = 3). In addition, the nano-Au/PABA film modified electrode wassuccessfully employed to determine the acetaminophen in commercial drugs, and this work has shed somedoubt on the redox mechanism of acetaminophen at the sensor.
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