Figure 6.

(A) SWS voltammograms of AC on GFPE: (a) 1.0 μmol L⁻¹, (b) 3.0 μmol L⁻¹, (c) 5.0 μmol L⁻¹, (d) 7.0 μmol L⁻¹, (e) 10.0 μmol L⁻¹, (f) 15.0 μmol L⁻¹, (g) 20.0 μmol L⁻¹, (h) 25.0 μmol L⁻¹, (i) 30.0 μmol L⁻¹, and (j) 35.0 μmol L⁻¹. The inset shows the corresponding calibration curve. (B) SWS voltammograms of AC determination on MLGPE: (a) 0.5 μmol L⁻¹, (b) 0.7 μmol L⁻¹, (c) 1.0 μmol L⁻¹, (d) 3.0 μmol L⁻¹, (e) 5.0 μmol L⁻¹, (f) 7.0 μmol L⁻¹, (g) 10.0 μmol L⁻¹, (h) 15.0 μmol L⁻¹, (i) 20.0 μmol L⁻¹, (j) 25.0 μmol dm⁻³, (k) 30.0 μmol L⁻¹, and (l) 35.0 μmol L⁻¹. The inset shows the corresponding calibration curve.