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Halide Exchange on Mg(II)–Al(III) Layered Double Hydroxides: Exploring Affinities and Electrostatic Predictive Models
(American Chemical Society, 2014-06)
The crystalline chloride form of layered double hydroxide (LDH) with the formula Mg0.75Al0.25(OH)2Cl0.25·mH2O was gradually exchanged with F–, Br–, or I– up to a total displacement of Cl–. For the three anions, both the ...
A new approach for determining stability constants of metal ion complexes in aquatic systems based on flow injection-ion exchange-flame atomic absorption spectrometry coupling
(Gordon Breach Sci Publ Ltd, 1997-01-01)
A method based an ion exchange(IE)-atomic absorption spectrometry(AAS) coupled by flow techniques, allowing the determination of formation constants of, at least, the first species of complex systems, in aqueous solution, ...
A new approach for determining stability constants of metal ion complexes in aquatic systems based on flow injection-ion exchange-flame atomic absorption spectrometry coupling
(Gordon Breach Sci Publ Ltd, 1997-01-01)
A method based an ion exchange(IE)-atomic absorption spectrometry(AAS) coupled by flow techniques, allowing the determination of formation constants of, at least, the first species of complex systems, in aqueous solution, ...
Distribuição de metais e caracterização das constantes de troca entre espécies metálicas e frações húmicas aquáticas de diferentes tamanhos moleculares
(Sociedade Brasileira de Química, 2002-12-01)
In this work the metal distribution and exchange constants between metal species and aquatic humic fractions with different molecular sizes were studied. The aquatic humic substances (AHS) were extracted by XAD-8 resin ...
Distribuição de metais e caracterização das constantes de troca entre espécies metálicas e frações húmicas aquáticas de diferentes tamanhos moleculares
(Sociedade Brasileira de Química, 2002-12-01)
In this work the metal distribution and exchange constants between metal species and aquatic humic fractions with different molecular sizes were studied. The aquatic humic substances (AHS) were extracted by XAD-8 resin ...
Rate constants determined by nuclear magnetic resonance
(Academic Press, 2001)
Fast kinetic methods are used to measure reactions that take place in less time than required to mix the reagents manually and to measure the reaction by usual methods, like UV-visible spectrophotometry and fluorescence. ...
Magnetic behaviour of hybrid organo/inorganic compounds with tetranuclear copper (II) units
(ELSEVIER, 2006-10-01)
The structure and magnetic properties of two hybrid VPO compounds [(Cu(2)bipy(2))(2)V4O11(PO4)(2)]center dot 5H(2)0 1 and [Cu(2)phen(2)(O3PCH2PO3)(V2O5)(H2O)] center dot H2O 2 are reported. The magnetic behaviour of compound ...
Adsorption-desorption processes of calcium on Brazilian soils
(Elsevier Science BvAmsterdamHolanda, 2003)