Electroanalytical Studies of New Non-Ionic 1,2,4-Triazole Surfactants and Their Determination at Working Mercury Electrode Using Voltammetric Techniques

摘要

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