Calibration curve (Fig. 7) within the tested concentration
range indicates that the determination of atrazine was possible for
0.01 – 50 ng/mL atrazine. The limit of the detection was estimated
mathematically and found out to be 0.01 ng/mL. Response of the
sensor (with respect to 0.1 ng/mL atrazine) was also tested with
respect to the elevated concentrations (50 ng/mL) of some other
pesticides, e.g. parathion, paraoxon, dichlovoros and malathion. As
the data (Fig. S4, Supporting Information) show, the proposed
immunosensor for atrazine was free from interferences with
respect to the above tested pesticides.