Abstract
Potentiometric studies of the mixed ligand derivatives of 1∶1-Th(IV)—DTPA chelate (whereDTPA=diethylene-triamine pentaacetic acid) with certain secondary ligands, such as lactic, mandelic and o-hydroxynaphthoic acids have been carried out. The pH-titrations of the reaction mixtures containing 1∶1∶1 molar ratio of metal ion toDTPA to secondary ligand have shown the formation of 1∶1∶1 ternary complexes at higher pH (≈8). The equilibrium constants of the resulting mixed complexes have been determined at 30±1°C and μ=0.1 (KNO3) and the order of stability in terms of secondary ligands has been found to be o-hydroxy naphthoic acids>mandelic acid>lactic acid.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
