T. Hirokawa et Ql. Mao, NEW METHOD TO DETERMINE STABILITY-CONSTANTS OF LANTHANIDE-EDTA COMPLEXES BY ISOTACHOPHORESIS, Journal of chromatography, 786(2), 1997, pp. 377-381
Citations number
4
Categorie Soggetti
Chemistry Analytical","Biochemical Research Methods
The zone reduction in the isotachophoretic migration of several lantha
nide-EDTA complexes at low pH was investigated. The typical leading el
ectrolyte was 20 mM HCl buffered by triglycine at pH 3.1 and the termi
nating electrolyte was 20 mM ammonia solution buffered by acetic acid
at pH 4.8. It was observed that a good linear relationship exists betw
een the stability constants and the zone reduction due to the bleeding
effect (liberating free metal ions). This relationship is the basis o
f a new method for the evaluation of the stability constants of the la
nthanide complexes. (C) 1997 Elsevier Science B.V.