期刊
JOURNAL OF RARE EARTHS
卷 36, 期 4, 页码 339-340出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jre.2017.12.001
关键词
Polyamine; Polyacetic acid; Stability constants; NTA; EDTA; DTPA
The purpose of this article is to propose the idea of a partial stability constant for the complex formation of polyamine polyacetic acids with tripositive rare earth ion. Each coordinating group has its own characteristic stability constant, i.e.,the partial stability constant and simple numerical addition can be used among the partial logarithm of the stability constant (PLSC), for explanation of the total stability constants. The structures of the rare earth-diethylenetriamine-N, N, N', N', N ''-pentaacetic acid (DTPA) complexes in aqueous solution has been discussed from the point of PLSC. (C) 2018 Published by Elsevier B.V. on behalf of Chinese Society of Rare Earths.
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