title: Potentiometric determination of stepwise stability constants of zirconium, thorium and uranium chelates of asparagine and glutamine.
abstract: The metal chelates of Zr(IV), Th(IV) and U(VI) with asparagine and glutamine have been studied potentiometrically. Stepwise stability constants in 0.1 M sodium perchlorate at 25 degrees are as follows. Asparaginate chelates-log K(1) 8.80, log K(2) 6.25 for Zr, log K(1) 6.79, log K(2) 6.16 for U, log K(1) 8.28, log K(2) 7.77 and log K(3) 7.72 for Th. Glutaminate chelates-log K(1) 8.75, log K(2) 6.10 for Zr, log K(1) 6.63, log K(2) 6.22 for U, log K(1) 8.30, log K(2) 7.61 and log K(3) 7.55 for Th.
authors.affiliation: Chemical Laboratories University of Allahabad Allahabad, India.
authors.forename: R C
authors.initials: RC
authors.lastname: Tewari
authors.forename: M N
authors.initials: MN
authors.lastname: Srivastava