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J. Braz. Chem. Soc. vol.22 número2

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Figure 2. Plots of i p versus pH and δi p /δpH versus pH (inset) of the single peak (pH values lower than 4.5) and 1 st splitting peak (pH 4.5-8) of 1.0×10 -4 mol L -1 irbesartan.
Figure 3. Cyclic voltammograms of 1.0×10 -6 mol L -1 irbesartan in the acetate buffer (pH 4) recorded following its preconcentration onto the HMDE by adsorptive accumulation under open circuit conditions (a) and at E acc = −0.3 V for 30 s (
Figure 4. Plots of SW-AdCSV peak current (i p ) versus preconcentration time (t acc
Table 1. Analytical precision and accuracy of determination of 1.0×10 -7 mol L -1 bulk irbesartan by the developed SW-AdCSV method (n = 3)
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