Abstract
Electrochemical performance of methyl parathion (MP) at a boron-doped diamond (BDD) electrode was investigated in aqueous media by cyclic voltammetry (CV) and square wave voltammetry (SWV). Methyl parathion (MP) shows electroactivity on BDD electrodes, three peaks being registered corresponding to one oxidation (0.16 V) and two reduction peaks, at −0.53 V and 0.01 V. MP reduction is certainly pH-dependent. However, at pH > 9.0 the electrochemical reduction of MP involves a reversible reaction of one electron forming the nitro-anion radical (NAR). The nitro-anion radical undergoes disproportionation and its kinetic stability was evaluated by using a peak current ratio corresponding to the reversible pair R − NO2/R − NO2−, and the second-order constant (k2) was determined. Moreover, thermodynamic parameters regarding the MP reduction mechanism and nitro-anion radical generation were investigated by computational methods.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.