Disposable Carbon Dots Modified Screen Printed Carbon Electrode Electrochemical Sensor Strip for Selective Detection of Ferric Ions

Figure 5

(a) Cyclic voltammogram of C-Dots modified SPCE with various concentrations of Fe³⁺ ions and (b) relationship between current intensity and Fe³⁺ ions concentration within the range of 0.5 to 25.0 ppm. (Error bars were calculated from the mean value, = 3.)

(a)

(b)