Artículos de revistas
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
Fecha
1997-01-01Registro en:
International Journal of Environmental Analytical Chemistry. Reading: Gordon Breach Sci Publ Ltd, v. 68, n. 1, p. 1-11, 1997.
0306-7319
10.1080/03067319708030475
WOS:000074566400001
5978908591853524
0000-0003-0197-7369
Autor
Universidade Estadual Paulista (Unesp)
Universidade Federal do Maranhão (UFMA)
Institución
Resumen
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, was developed.The IE-AAS coupling reduces significantly the number of experimental steps in comparison with IE batch methods, resulting in an important increase in analytical rate. The method is simple both from experimental and computational points of view, making possible its utilization by workers without special expertise in the field of complex equilibria in solution. on the other hand, taking into account mainly the amount of hollow cathode lamps available to date, the developed procedure may be applied, within certain limitations, to the study of many systems whose features prevent the use of traditional approaches.