Electro-oxidation of herbicide halosulfuron methyl on glassy carbon electrode and applications |
| |
Authors: | Tuba Sarigül Hassan Y Aboul-Enein |
| |
Institution: | a Gazi University, Faculty of Art & Science, Department of Chemistry, 06500 Ankara, Turkey b Department of Pharmaceutical and Medicinal Chemistry, National Research Centre, Dokki, Cairo 12311, Egypt |
| |
Abstract: | Halosulfuron methyl, a fast-acting herbicide and is absorbed into leaf tissue within 1-2 days and translocated through the vascular system, interrupting amino acid production within the plant, can be detected using glassy carbon electrode the technique of adsorptive stripping voltammetry. The adsorptive stripping voltammetric behavior of halosulfuron methyl was investigated in pH range 1.0-10.0. Halosulfuron methyl was irreversibly oxidized at a glassy carbon electrode. Electrochemical techniques including adsorptive stripping voltammetry and cyclic voltammetry were employed to study the oxidation mechanism. The experimental parameters such as the accumulation potential, accumulation time and frequency were optimized. The linear range, detection limit and quantification for halosulfuron methyl were evaluated by adsorptive stripping voltammetry. Under the optimized conditions, the peak current is linear to halosulfuron methyl concentration in the range 4.1-50.0 μg mL−1. Limit of detection and limit of quantification were 1.23 and 4.10 μg mL−1, respectively. The interference of inorganic species and other some pesticides on the voltammetric response have been studied. The applicability to spiked soil and natural water was described and the recoveries for the standards added are 103.8% and 108.2%, respectively. The method is successfully applied for the determination of halosulfuron methyl in commercial formulation. |
| |
Keywords: | Halosulfuron methyl Pesticide Determination Voltammetry Glassy carbon electrode Water analysis |
本文献已被 ScienceDirect 等数据库收录! |
|