الفهرس 
I: Introduction.Only 14 pages are availabe for public view
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Abstract
P1,5-DAN/GC modified electrode was fabricated by electropolymerization of 1.5 mM 1,5-diaminonaphthalene from aqueous solution containing 1.0 M HClO4, at GC electrode surface using consecutive cyclic voltammetry for 15 cycles between 0 and 0.8 V at 0.02 V/s versus Ag/AgCl as a reference electrode and platinum electrode as an auxiliary electrode.
P1,5-DAN/GC was used for detections of hydroquinone, catechol, and resorcinol in 0.05 M HClO4 or PBS pH 7.0 in single, binary, ternary and real samples mixtures by using Cyclic voltammetry and Square wave voltammetry techniques. These detections showed good electrochemical performance on the oxidation peaks separation for the three dihydroxybenzene isomers compared with bare GC in the range of 0.1-100 μM for each. The detection limits (LOD) for HQ, CC and RC in PBS pH 7.0 are 0.054, 0.059 and 0.126 μM, respectively. Results showed that the detection sensitivity for quantification of bisphenols in PBS pH 7.0 is better than that in acidic medium.
PdNPs/P1,5-DAN/GC modified electrode was fabricated in two steps. The first step described above. To prepare PdNPs/P1,5-DAN/GC, the prepared P1,5-DAN/GC M.E. was placed into a solution of 2.5 mM PdCl2 in 10 ml of 0.1 M HClO4 and using CV technique for 25 repeated cycles from (-0.2 to 0.65 V) at scan rate of 0.05 Vs-1. The PdNPs/P1,5-DAN/GC modified electrode exhibits linear responses to HQ, CC and RC in the range of 50-100 μM for each. The detection limits (LOD) for HQ, CC and RC in 0.05 M HClO4 are 0.000222, 0.000227 and 0.000477 μM, respectively.
The electrochemical determination of HQ, CC and RC was performed by Square wave voltammetry technique in their single, binary and ternary mixtures.