DETERMINATION OF STABILITY-CONSTANTS OF CU(II), FE(III) AND PB(II) CHELATES WITH N,N,N',N'-ETHYLENEDIAMINE TETRAKIS (METHYLENEPHOSPHONIC ACID) BY REVERSED-PHASE ION-PAIR CHROMATOGRAPHY

Authors
LI CY GAO LZ ZHAO GH KANG JW HE HH
Citation
Cy. Li et al., DETERMINATION OF STABILITY-CONSTANTS OF CU(II), FE(III) AND PB(II) CHELATES WITH N,N,N',N'-ETHYLENEDIAMINE TETRAKIS (METHYLENEPHOSPHONIC ACID) BY REVERSED-PHASE ION-PAIR CHROMATOGRAPHY, Chromatographia, 46(9-10), 1997, pp. 489-494
Citations number
6
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
Journal title
Chromatographia → ACNP
ISSN journal
00095893
Volume
46
Issue
9-10
Year of publication
1997
Pages
489 - 494
Database
ISI
SICI code
0009-5893(1997)46:9-10<489:DOSOCF>2.0.ZU;2-3
Abstract
The stability constants, K-st, of Cu(II), Fe(III) and Pb(II) chelates with ,N',N'-ethylenediaminetetrakis(methylenephosphonic acid) (EDTMP) have been determined by reversed-phase ion-pair chromatography. The va lue of logK(st) was 6.18 +/- 0.32 for the Cu(II) complex, 5.75 +/- 0.1 6 for the Fe(III) complex and 5.67 +/- 0.07 for the Pb(II) complex.