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. Author manuscript; available in PMC: 2014 Oct 10.
Published in final edited form as: Biosens Bioelectron. 2012 Jul 21;39(1):99–105. doi: 10.1016/j.bios.2012.06.061

Fig. 5.

Fig. 5

(i) Electrochemical response curve of fG–GO modified SPE in a competitive immunoassay format for the different concentrations of standard diuron samples (a) 0, (b) 0.0001, (c) 0.001, (d) 0.01, (e) 0.1, (f) 1, (g) 10, (h) 100, (i) 1000, and (j) 10,000 ng mL−1. (ii) Calibration plot for diuron in the range from 0.1 pg mL−1 to 10 µg mL−1 (n=3). The antibody concentration of 25 µg mL−1 was selected for immunoassay development.