Artículo
Simultaneous spectrophotometric determination of rare-earth and transition elements using partial least-squares (PLS) multivariate calibration
Fecha de publicación:
01/2001
Editorial:
SP MAIK Nauka/Interperiodica
Revista:
Journal Of Analytical Chemistry
ISSN:
1061-9348
e-ISSN:
1608-3199
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
A spectrophotometric method for the simultaneous determination of rare-earth and transition elements in synthetic superconductors, [(La1 – x Eu x )1.82Sr0.18CuO4], by the use of 2-(5-bromo-2-pyridylazo)-5-diethylaminophenol (5-Br-PADAP) as chelating agent was developed. The influence of chemical variables affecting the reaction was studied. A partial least-squares (PLS) multivariate calibration procedure was used to assess the data obtained from several calibration solutions measured over the wavelengths range 400–700 nm. The concentration range for Cu was (1–12) × 10–6 mol/L, while the range for the rare-earth elements La and Eu was (2–8) × 10–6 mol/L. The relative errors in the determinations were less than 5% in most cases.
Palabras clave:
MULTIVARIATE
,
CALIBRATION
,
TRANSITION
,
ELEMENTS
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INQUISAL)
Articulos de INST. DE QUIMICA DE SAN LUIS
Articulos de INST. DE QUIMICA DE SAN LUIS
Citación
Camiña, José Manuel; Ferreyra, Raquel Edith; Luco, Juan Maria; Marchevsky, Eduardo Jorge; Simultaneous spectrophotometric determination of rare-earth and transition elements using partial least-squares (PLS) multivariate calibration; SP MAIK Nauka/Interperiodica; Journal Of Analytical Chemistry; 56; 1-2001; 25-30
Compartir
Altmétricas