Voltammetric Detection of Dopamine in Presence of Ascorbic Acid and Uric Acid at Poly (Xylenol Orange) Film-Coated Graphite Pencil Electrode

Figure 5

(a) Simultaneous detection of 0.5×10⁻⁵ M DA, 1×10⁻⁴ M AA, and 5×10⁻⁵ M UA at BGPE (solid line) and at poly(XO)/GPE (dashed line) by CV at scan rate of 50  mV s⁻¹. (b) Simultaneous detection of 0.5×10⁻⁵ M DA, 1×10⁻⁴ M AA, and 5×10⁻⁵ M UA at BGPE (solid line) and at poly(XO)/GPE (dashed line) by DPV at scan rate of 20  mV s⁻¹.

(a)

(b)