Artículo
Development and validation of an SPME-GC method for a degradation kinetics study of propiconazole I, propiconazole II and tebuconazole in blueberries in Concordia, the main production area of Argentina
Fecha de publicación:
05/2017
Editorial:
Taylor and Francis Ltd.
Revista:
Food Addit Contam Part A Chem Anal Control Expo Risk Assessment
ISSN:
1944-0057
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
An analytical method for the simultaneous determination of propiconazole isomers and tebuconazole residues in blueberries was developed using solid-phase microextraction (SPME) coupled to gas chromatography. Confirmation was performed by gas chromatography?mass spectrometry in selected-ion monitoring mode. The SPME fibre coating selected was CWX-DVB, and the pH was adjusted to 7 with NaOH. The method is selective with adequate precision and high accuracy and sensitivity. Recoveries ranged between 97.4% and 98.9% for all compounds; and detection and quantification limits were respectively 0.21 and 0.49 μg kg?1 for propiconazole I; 0.16 and 0.22 μg kg?1 for propiconazole II; and 0.16 and 0.48 μg kg?1 for tebuconazole. The degradation of these fungicides in blueberries followed first-order rate kinetics. The half-life times for flowering and fruit set applications were respectively 4.0 and 10.3 days for propiconazole I, 4.0 and 11.4 days for propiconazole II, and 3.5 and 12.4 days for tebuconazole.
Palabras clave:
Blueberries
,
Degradation Kinetics
,
Propiconazole Tebuconazole
,
Spme/Gc-Ms
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Articulos de SEDE CENTRAL
Citación
Munitz, Martín Sebastián; Medina, María Belén; Montti, Maria Isabel Tatiana; Development and validation of an SPME-GC method for a degradation kinetics study of propiconazole I, propiconazole II and tebuconazole in blueberries in Concordia, the main production area of Argentina; Taylor and Francis Ltd.; Food Addit Contam Part A Chem Anal Control Expo Risk Assessment; 34; 5; 5-2017; 793-799
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