Validation of a SPME-GC Method for Azoxystrobin and Pyraclostrobin in Blueberries, and Their Degradation Kinetics

cic.isFulltexttruees
cic.isPeerReviewedtruees
cic.lugarDesarrolloUniversidad Nacional de Entre Ríoses
cic.lugarDesarrolloAgencia Nacional de Promoción Científica y Tecnológicaes
cic.lugarDesarrolloUniversidad de Buenos Aireses
cic.lugarDesarrolloComisión de Investigaciones Científicas de la Provincia de Buenos Aireses
cic.versioninfo:eu-repo/semantics/publishedVersiones
dc.date.accessioned2019-09-18T12:22:23Z
dc.date.available2019-09-18T12:22:23Z
dc.identifier.urihttps://digital.cic.gba.gob.ar/handle/11746/10305
dc.titleValidation of a SPME-GC Method for Azoxystrobin and Pyraclostrobin in Blueberries, and Their Degradation Kineticsen
dc.typeArtículoes
dcterms.abstractAnalytical method for the residues of strobilurins azoxystrobin and pyraclostrobin in blueberries was developed. Fungicide residues were determined by solid-phase microextraction (SPME) coupled to gas chromatography with micro-electron capture detector. The effect of pH values and fiber coatings were studied. The SPME fiber coating selected was 100 μm PDMS. The method is selective with adequate precision and high accuracy and sensitivity. Recoveries ranged within the 100% - 106% range for azoxystrobin, and 96% - 106% range for pyraclostrobin; and detection and quantification limits were 2.0 and 6.0 μg/kg for azoxystrobin, and 26.0 and 86.0 μg/kg for pyraclostrobin, respectively. Statistical parameters indicated the occurrence of matrix effect; consequently calibration was performed on spiked samples. Degradation of azoxystrobin and pyraclostrobin was studied in blueberry fields located in Concordia, Argentina, with fruits from Emerald and Jewel varieties. The degradation of these fungicides in both blueberry varieties studied followed a first order rate kinetics, and the half-life for azoxystrobin was 11.6 and 17.8 days for Emerald and Jewel cultivars; and for pyraclostrobin was 5.5 and 8.0 days, respectively.en
dcterms.creator.authorMunitz, Martín S.es
dcterms.creator.authorResnik, Silvia Lilianaes
dcterms.creator.authorMontti, María I. T.es
dcterms.creator.authorVisciglio, Silvioes
dcterms.extentp. 964-974es
dcterms.identifier.otherdoi:10.4236/as.2014.511104es
dcterms.identifier.otherISSN 2156-8561es
dcterms.isPartOf.issuevol. 5, no. 11es
dcterms.isPartOf.seriesAgricultural Scienceses
dcterms.issued2014
dcterms.languageIngléses
dcterms.licenseAttribution 4.0 International (BY 4.0)es
dcterms.subjectBlueberriesen
dcterms.subjectAzoxystrobinen
dcterms.subjectPyraclostrobinen
dcterms.subjectDegradation Kineticsen
dcterms.subjectSPME/GCen
dcterms.subject.materiaAgriculturaes

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