Artículo
Determination of pesticides and metabolites in wine samples by HPLC-DAD and second-order calibration methods
B. Braga, Jez W.; G. Bottoli, Carla B.; Jardim, Isabel; Goicoechea, Hector Casimiro
; Olivieri, Alejandro Cesar
; Poppi, Ronei Jesus
Fecha de publicación:
12/2007
Editorial:
Elsevier Science
Revista:
Journal of Chromatography - A
ISSN:
0021-9673
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The second-order calibration models PARAFAC and the recently introduced BLLS were applied to several chromatographic-diode array detection systems, where overlap of interferences with the compounds of interest was observed, making the determination and resolution of the analytes possible. In this work, the simultaneous determination of five pesticides and two metabolites in wine samples by HPLC-DAD was performed, using the so-called second-order advantage. The results of two chromatographic methods were compared, involving either isocratic or gradient elution. An appropriate preprocessing method was necessary to correct the effects of time shifts, baseline variations and background. BLLS presented results that were of the same quality as PARAFAC in five cases, but in two other situations only PARAFAC enabled analyte quantitation. Relative errors of prediction lower than 10 % for all compounds were obtained, indicating that the methodology employing HLPC-DAD and second-order calibration can handle complex analytical systems.
Palabras clave:
BLLS
,
PARAFAC
,
Pesticides determination
,
Wine
,
HPLC-DAD
Archivos asociados
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Identificadores
Colecciones
Articulos(CCT - SANTA FE)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - SANTA FE
Articulos(IQUIR)
Articulos de INST.DE QUIMICA ROSARIO
Articulos de INST.DE QUIMICA ROSARIO
Citación
B. Braga, Jez W.; G. Bottoli, Carla B.; Jardim, Isabel; Goicoechea, Hector Casimiro; Olivieri, Alejandro Cesar; et al.; Determination of pesticides and metabolites in wine samples by HPLC-DAD and second-order calibration methods; Elsevier Science; Journal of Chromatography - A; 1148; 12-2007; 200-210
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