Investigation of neodymium complex with acid chrome blue K by beta-correction spectrophotometry

The neodymium complex with acid chrome blue K (ACBK) at pH 10 has been studied in detail by beta-correction spectrophotometry. The cationic surfactant, cetyltrimcthylammonium bromide (CTAB) is useful for increasing the sensitivity and solubility of ligand and complex. The characteristic factors of complex are calculated, for example, complex ratio and stability constant. Results show that Nd(ACBK)3 is formed and its real not apparent molar absorptivity is the first to be determined as follows : epsilon (520)NDACBK)3 = 5.54 x 10^4 dm^3 mol^-1 cm^-1 at pH 10. In addition, the cumulative stability constant of complex Nd(ACBK)3 is still computed to be 1.72 x 10^16 in ionic strength 0.1 M and at temperature 15°.