Solvent Extraction of Thorium Using 5,11,17,23-Tetra[(2-ethyl acetoethoxyphenyl)(azo)phenyl]calix[4]arene

Figure 5

Effect of TEAC concentration on the extraction of Th(IV): chloroform as solvent, at 525 nm and Th(IV) 1 × 10⁻⁴ M.