Research Article
Study of Complexes of Tannic Acid with Fe(III) and Fe(II)
Figure 4
The mole ratio curves of the tannic acid-Fe(III) complex by the mole ratio method. The solid line denotes 2.000 × 10−4 mol/L Fe(III) in sample liquid. The dotted line denotes 1.000 × 10−4 mol/L Fe(III) in sample liquid.