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Quím. Nova vol.36 número8

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Figure 2. Isotherm of copper complexation on 4-aminobenzoic acid in CaP  compound
Figure 6 shows the amperometric curve obtained by successively  adding 50 µdm 3  of a 0.010 mol dm -3  DA solution with the phosphate  buffer at pH 7.2 into an electrochemical cell fixed at E pa  = 0.38V
Figure 7. Plot of anodic peak current (I pa ) against dopamine concentration  in a 0.10 mol dm -3  phosphate buffer solution at pH 7.2

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