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

Figure 5

SWV of (a) PMMA_G immersed in CT concentrations from 0 to 2.91 mM; (b) PMMA_F_G immersed in CT concentrations from 0 to 1.67 mM; (c) PMMA_G immersed in HQ concentrations from 0 to 3.15 mM; and (d) PMMA_F_G immersed in HQ concentrations from 0 to 2.68 mM. 0.1 M KCl was used as supporting electrolyte.

(a)

(b)

(c)

(d)