Abstract
Electroanalysis of endosulfan, an important organochlorine pesticide and o -chlorophenol, a toxic pollutant was carried out with polypyrrole coated glassy carbon electrode. Pyrrole was electropolymerised on glassy carbon electrode potentiostatically at 0.9 V. Cyclic voltammogram, square wave voltammogram, differential pulse stripping voltammogram and square wave stripping voltammogram under their optimum experimental conditions were obtained for the determination of both compounds. On polypyrrole coated electrode, higher peak current response was observed with differential pulse and squarewave stripping techniques. Comparatively better analytical signal was noticed with square waveform than the differential pulse form. Optimum stripping voltammetric conditions were arrived and the calibration plot was made. The determination limit is 2.457 2 10 m 3 and 23.346 mM for endosulfan and 7.779 2 10m 3 and 26.916 mM for o-chlorophenol.
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