In order to obtain the best conditions for the determination of
kresoxim-methyl, a preliminary study was conducted. For the
choice of the supporting electrolyte, the analyte solution (at
1.0 105 mol L1) was prepared in different solutions where the
BDD electrode was immersed and submitted to a potential scan
over the range from 1000 to +2500 mV, using square-wave voltammetry
(SWV) with the following initial instrumental parameters:
40 Hz of frequency (f), pulse amplitude (a) of 20 mV and
step potential (DEs) of 10 mV.