z-logo
Premium
Spectrophotometric Study of Cerium(III) and Thorium(IV) Chelates of trans ‐I, 2‐diaminocyclohexane‐N, N, N′, N′‐ Tetraacetic Acid (DCTA)
Author(s) -
Hseu TongMing,
Young ChungChang
Publication year - 1965
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.196500007
Subject(s) - chemistry , chelation , cerium , ionic strength , aqueous solution , inorganic chemistry , absorption (acoustics) , ion , nuclear chemistry , thorium , organic chemistry , physics , acoustics , materials science , uranium , metallurgy
Interaction between DCTA and Ce(III) ion has been investigated spectrophotometrically. It has been found that the Ce(III)‐DCTA chelate in aqueous solution ( p H 4.25) exhibited a characteristic absorption maximum at 305 m μ. The absorption of Ce(III)‐DCTA chelate is considerably diminished by the addition of small amounts of Th(IV) ion. This phenomenon is used as the basis of a simple spectrophotometric scheme for the quantitative determination of Th(IV) ion and the evaluation of the formation constant of Th(IV)‐DCTA chelate. The composition of Ce(III)‐ and Th(IV)‐DCTA chelates were 1:1 and the corresponding formation constants (log K f ) of the chelates were 16.87 and 23.76 at 25°C and an ionic strength of 0.1 (KNO 3 ), respectively. The application of this system to the determination of traces of Th(IV) ion has been demonstrated.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here