Research Article
Sensitive and Simultaneous Determination of Hydroquinone and Catechol in Water Using an Anodized Glassy Carbon Electrode with Polymerized 2-(Phenylazo) Chromotropic Acid
Figure 7
DPV responses at PCH/AGCE in PBS (pH 7.0) containing (a) 50 μM of CT and different concentrations of HQ (a ⟶ j: 0, 1, 5, 10, 20, 30, 40, 60, 80, 100, 200, and 300 μM); (b) 50 μM of HQ and different concentrations of CT (a ⟶ j: 0, 1, 5, 10, 20, 30, 40, 60, 80, 100, 200, and 300 μM); (c) mixture of different concentrations of HQ and CT (a ⟶ j: 0, 1, 5, 10, 20, 30, 40, 60, 80, 100, 200, and 300 μM). Inset: plots of Ipa as a function of [HQ] or [CT].
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