Usually, it would be great to know, which pesticides can interfere. And measure the response of them. Pesticides, which have the same electroactive group can give slightly different response depending on the other substitution. In any case you have to know more about the measured sample not to measure the sum of all compounds, which can contribute to the signal. Depends also on solvents, working electrode etc..

when I work the interefering effects of pesticides which have same electroactive group but have different substition give same region peaks especially carbamat gruops pesticides. if i change solution, solvent etc, their interefering effects can be grand the peaks region