Poly(34 Ethylenedioxythiophene ) (pedot) Modified Glassy Carbon Electrode For The Voltammetric Determination Of Diazinon
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A glassy carbon electrode (GCE) is modified with PEDOT and itsrnapplication for differential pulse voltammetry (DPV) detection of diazinonrn,DZN ( organophosphate pesticide) is observed. The PEDOT shows arnstrong affinity toward diazinon molecule which provides sensitivity forrnthe modified GCE. Instrumental and Chemical parameters influencingrnthe voltammetric response are optimized for diazinon determination .rnUnder Optimum experimental condition the peak current is linear torndiazinon concentration over the range of 20μM to 80μM with arncorrelation coefficient of 0.99866. The limit of detection based on threerntimes the standard deviation of the blank (3Sb) was 4.245x 10-6M.rnThe recovery values for sample tap-water solution containing low ,middlernand high concentration of diazinon (50μM, 60 μM & 80 μM) werern95.24%,88.4% & 81.29%; respectively. Thus this modified electrode isrnconsiderably applied for the determination of DZN in tap-water sample.rnKey words : Diazinon , differential pulse voltammetry, PEDOT , GCE
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