Abstract
The present study reports the determination of new synthesized fluorinated non-ionic surfactants bearing 1,2,4-triazole moiety using a sensitive, efficient and reproducible square wave-adsorptive stripping voltammetric (SW-AdSV) technique on a hanging mercury drop electrode (HMDE) in aqueous solution with Britton-Robinson (B-R) Buffer at pH=6 as the supporting electrolyte. Various chemical and instrumental parameters (accumulation potential E-acc, accumulation time t(acc), scan rate nu, square wave frequency, pulse amplitude, convection rate and surface of working electrode area) affecting the monitored electroanalytical response were investigated and optimized. Under these optimized conditions, the calibration curve shows a linear response in the range from 1x10(-8)-1x10(-6) mol l(-1) (correlation coefficient = 0.993) and the detection limit (S/N = 3) is 4.3x10(-9) mol l(-1) at an accumulation time of 240 sec. A relative standard deviation of 1.85 RSD% (n = 8) and mean recovery of 107.2% +/- 1.92 confirm the reproducibility and the accuracy of the developed SW-AdSV method.