Figure 2 - uploaded by Mostafa Shourian
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Amperometric responses of the biosensor toward the dose rates of 60 Co. (A) Amperogram of AQ-HRP/GC electrode in the presence of different dose rates of 60 Co in PBS. Each step (from down to up) shows an amperogram obtained for 3 mL of PBS in which 50 ml of sample soluons exposed to different dose rates of 60 Co (0, 0.25, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5 and 5 Gy) were added. (B) The calibraon curve for 60 Co dose rates determinaon. The experiments were done at constant potenal of -550 mV (vs. Ag/AgCl). Each point represents the average value of three different measurements.
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... seen, at a constant voltage of -550 mV (vs. Ag/AgCl), after a transient decay a steady state current was achieved in a reasonable response time of 30 s. Figure 2(B) shows the increments in the current (∆I) against the addition of the certain dose rates of 60 Co. As seen, the increasing of current is directly proportional to H2O2 produced by 60 Co in the solution. ...
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