Fig. 3From: Ultra-stable Electrochemical Sensor for Detection of Caffeic Acid Based on Platinum and Nickel Jagged-Like NanowiresDPV of the 0.136 μg PtNi/C-modified electrode in 0.1 M BR buffer solution (pH = 2.0) solution containing different concentrations of CA (a) and the plots of oxidation currents versus the concentration of CA (b)Back to article page