INVESTIGADORES
FERNANDEZ Liliana Patricia
artículos
Título:
EXTRACTION AND SENSITIVE SPECTROPHOTOMETRIC DETERMINATION OF YTTERBIUM WITH 2-(3,5-DICHLORO-2- PYRIDYLAZO)-5-DIMETHYLAMINOPHENOL
Autor/es:
FERNANDEZ, LILIANA; OLSINA, ROBERTO
Revista:
TALANTA
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 1992 vol. 39 p. 1605 - 1609
ISSN:
0039-9140
Resumen:
The operating conditions for the absorptiometric determination of Yb(III) with the reagent 2-(3,5-dichloro-2-pyridylazo)-5-dimethylaminophenol (3,5-diClDMPAP) by a liquid?liquid extraction technique are presented. The complex yields a molar absorptivity of 1.54 × 105l.mole−1.cm−1 (λmax = 588 nm) and an optimum concentration range of 0.025?1.360n mg/l., at pH = 10. The method developed has been applied to the determination of Yb(III) in synthetic and concrete mixtures.
