Özet:

In this study, the electrochemical behavior of ethalfluraline (ETF), a dinitroaniline group herbicide, on glassy carbon electrode(CKE) and nafion-graphene modified glassy carbon electrode(N-GR /CKE) was investigated by cyclic voltammetry(CV). Voltammetric determination of ETF was examined by differential pulse voltammetry(DPV). Two peaks observed at -0.942V(1st peak current) and -0.768V(2nd peak current) during the potential scan of EFT by DPV method in pH 7 phosphate buffer solution between 0 and -1.5V on CKE and at -0.674 V(1st peak current) and -0.563 V(2nd peak current) during the potential scan on N-GR/CKE. After determining the optimum experimental conditions of ETF on CKE and N-GR /CKE, calibration line, working range, limit of detection(LOD), limit of quantification(LOQ), intra-day and inter-day repeatability were determined. In addition, the interference effect of some cations(Cu2+, Ni2+, Co2+, Ca2+, Pb2+) on N-GR/CKE was also investigated.The results show that EFT can be determined in real samples(water and soil) using CKE and N-GR/CKE.