Figure 5

(A) Effect of pH on peak current of 250 ng·mL−1 fenitrothion at GCE modified with graphene oxide dispersion; (B) Effect of graphene film thickness on peak current of 250 ng·mL−1 fenitrothion at GCE modified with graphene oxide dispersion.
(A) Effect of pH on peak current of 250 ng·mL−1 fenitrothion at GCE modified with graphene oxide dispersion; (B) Effect of graphene film thickness on peak current of 250 ng·mL−1 fenitrothion at GCE modified with graphene oxide dispersion.