An electrochemical method has been developed for the quantification
of kresoxim-methyl in grape juice using the boron-doped
diamond (BDD) working electrode. The oxidation of kresosimmethyl
was studied and a mechanism proposed. Experimental conditions
were adjusted in order to enable a limit of quantification in
the mg L1, which is appropriate to determine concentrations at
the allowed pesticide maximum daily intake value. The use of
BDD is very simple and it is a very resistant and resilient material
for such type of analytical determinations.