Multi-residue screening of pesticides in vegetables, fruits and baby food by stir bar sorptive extraction-thermal desorption-capillary gas chromatography-mass spectrometry

Simple item page
dc.contributor.authorSandra P.
dc.contributor.authorTienpont B.
dc.contributor.authorDavid F.
dc.date.accessioned2011-05-15T15:59:36Z
dc.date.available2011-05-15T15:59:36Z
dc.date.issued2003
dc.description.abstractThe performance of stir bar sorptive extraction (SBSE) for the enrichment of pesticides from vegetables, fruits and baby food samples is discussed. After extraction with methanol, an aliquot is diluted with water and SBSE is performed for 60 min. By applying a new thermal desorption unit (TDU), fully automated and unattended desorption of 98 stir bars is feasible, making SBSE very cost-effective. The presence of pesticide residues is elucidated with the retention time locked gas chromatography-mass spectroscopy method (RTL-capillary GC-MS). With SBSE-RTL-capillary GC-MS operated in the scan mode, more than 300 pesticides can be monitored in vegetables, fruits and baby food. The multi-residue method (MRM) described provides detectabilities from the mg/kg (ppm) to the sub-μg/kg (ppb) level, thereby complying with the maximum residue levels (MRLs) set by regulatory organizations for pesticides in different matrices. Several examples, i.e. pesticide residues in lettuce, pears, grapes and baby food, illustrate the potential of SBSE-RTL-capillary GC-MS. © 2003 Elsevier Science B.V. All rights reserved.
dc.description.versionArticle
dc.identifier.citationJournal of Chromatography A
dc.identifier.citation1000
dc.identifier.citation02-Jan
dc.identifier.issn219673
dc.identifier.other10.1016/S0021-9673(03)00508-9
dc.identifier.urihttp://hdl.handle.net/10019.1/11262
dc.subjectDesorption
dc.subjectExtraction
dc.subjectFood products
dc.subjectMethanol
dc.subjectPesticides
dc.subjectMulti-residue method (MRM)
dc.subjectGas chromatography
dc.subjectmethanol
dc.subjectpesticide
dc.subjectwater
dc.subjectarticle
dc.subjectautomation
dc.subjectbaby food
dc.subjectcapillary gas chromatography
dc.subjectcost effectiveness analysis
dc.subjectdesorption
dc.subjectdilution
dc.subjectextraction
dc.subjectfruit
dc.subjectmass spectrometry
dc.subjectpriority journal
dc.subjectsampling
dc.subjectscreening
dc.subjecttemperature
dc.subjectvegetable
dc.subjectFruit
dc.subjectGas Chromatography-Mass Spectrometry
dc.subjectHumans
dc.subjectInfant
dc.subjectInfant Food
dc.subjectPesticide Residues
dc.subjectSensitivity and Specificity
dc.subjectVegetables
dc.subjectLactuca
dc.subjectPyrus
dc.subjectVitaceae
dc.titleMulti-residue screening of pesticides in vegetables, fruits and baby food by stir bar sorptive extraction-thermal desorption-capillary gas chromatography-mass spectrometry
dc.typeArticle
Files
Collections
Stellenbosch University - Scopus Publications