Zobrazeno 1 - 10
of 75
pro vyhledávání: '"E. Merciny"'
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 77:455-464
Enthalpy changes associated with the formation of the 1:1 chelates of the lanthanide ions with N-hydroxyethylethylenediaminetriacetic acid have been determined by a calorimetric method at 25°C and μ = 0.1 (K.Cl). The various thermodynamic functions
Autor:
G. Duyckaerts, E. Merciny
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 80:349-356
Different properties of the complexes Me Y formed between the trivalent lanthanides and HEDTA have been studied: the solubilities at 20°C and 100°C, the degree of hydration and the temperature of dehydration. Extremely high solubility of certain co
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 80:617-628
The study of the 1:1 complexes of HEDTA with different lanthanides is carried out by different spectral methods (RX, infra-red and Raman spectroscopy) in order to determine their molecular structure. The behaviour of the alcoholic group of the acid i
Autor:
J. Fuger, E. Merciny
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 77:59-66
Enthalpy changes associated with the three ionizations of hydroxyethylenediaminetriacetic acid have been measured calorimetrically. The values reported for 25°C and μ = 0.1 (KCl) are ΔH1 = −1.12±0.12, ΔH2 = + 3.09±0.05 and ΔH3 = + 6.65±0.08
Publikováno v:
Analytica Chimica Acta. 189:301-311
Resume La separation des lanthanides en deux groupes, basee sur de sviteresses de decomplexation differentes des entites LnDOTA (DOTA = acide 1,4,7,10-tetraazacyclododecane- N,N′,N″,N‴ -tetraacetique) est realisee sur une colonne d'echangeur d'
Publikováno v:
Analytica Chimica Acta. 220:187-194
(Study of the complexation of the lanthanides by the trans-1,3 isomer of cyclopentanediaminotetraacetic acid.) The various steps of the synthesis of trans-1,3-cyclopentanediaminotetraacetic acid are briefly discussed and the acidity constants of this
Publikováno v:
Analytica Chimica Acta. 94:91-110
Resume Les auteurs determinent, par titrage potentiometrique a 25°C et en milieu de force ionique egale a l (KCl), les constantes partielles de formation des complexes 1:2 et mixtes, protones et non protones, Ln—HEDTA—L, L etant respectivement l
Publikováno v:
Analytica Chimica Acta. 129:113-124
A new method is proposed for the highly precise and accurate constant-current coulometry of uranium in high-purity uranium. Precisely weighed amounts of uranium and pure iron are dissolved in 7 M sulfuric acid containing some hydrogen peroxide (40% v
Publikováno v:
Analytica Chimica Acta. 221:325-336
( Determination of the stability constants of trivalent lanthanide complexes with polyazapolycarboxylic macrocycles. Study of the complexing properties of the chelating resin Chelite-N for trivalent lanthanides. ) The complexing properties of the che
Autor:
J. Fuger, E. Merciny
Publikováno v:
Analytica Chimica Acta. 160:87-97
Resume Les auteurs decrivent les differentes etapes d'un protocolo experimental de synthese de cinq isomeres de l'acide diaminocyclohexanetetraacetique (1,2 cis, 1,3 cis, 1,3 trans, 1,4 cis, 1,4 trans). Ils determinent ensuite, par potentiometrie a 2