Polymeric Foams as the Matrix of Voltammetric Sensors for the Detection of Catechol, Hydroquinone, and Their Mixtures

Figure 6

(a) SWV recorded using PMMA_G for increasing concentrations of catechol from 0.61 to 1.92 mM in the presence of 2 mM hydroquinone in 0.1 M KCl as supporting electrolyte, and (b) comparison for SWV recorded for PMMA_G (red line) and PMMA_F_G (blue line) for 1.92 mM of catechol in the presence of 2 mM hydroquinone in 0.1 M KCl as supporting electrolyte.

(a)

(b)