Research Article
Spectrophotometric Determination of Cr(III) and Pb(II) Using Their Complexes with 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene
Figure 6
Effect of metal ions on the change in the absorbance of TEAC-Cr(III) and TEAC-Pb(II) complexes with MeOH + H2O as solvent and pH = 10.5.