Research Article
Study of Complexes of Tannic Acid with Fe(III) and Fe(II)
Figure 5
The mole ratio curves of the tannic acid-Fe(II) complex by the mole ratio method. The solid line denotes 1.000 × 10−4 mol/L Fe(II) in sample liquid. The dotted line denotes 5.000 × 10−5 mol/L Fe(II) in sample liquid.