Document Detail


Multi-residue screening of pesticides in vegetables, fruits and baby food by stir bar sorptive extraction-thermal desorption-capillary gas chromatography-mass spectrometry.
MedLine Citation:
PMID:  12877176     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The 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-microg/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 SBSB-RTL-capillary GC-MS.
Authors:
Pat Sandra; Bart Tienpont; Frank David
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of chromatography. A     Volume:  1000     ISSN:  0021-9673     ISO Abbreviation:  J Chromatogr A     Publication Date:  2003 Jun 
Date Detail:
Created Date:  2003-07-24     Completed Date:  2003-08-26     Revised Date:  2009-01-15    
Medline Journal Info:
Nlm Unique ID:  9318488     Medline TA:  J Chromatogr A     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  299-309     Citation Subset:  IM    
Affiliation:
Research Institute for Chromatography, Kennedypark 20, B-8500 Kortrijk, Belgium. pat.sandra@richrom.com
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MeSH Terms
Descriptor/Qualifier:
Fruit / chemistry*
Gas Chromatography-Mass Spectrometry / methods*
Humans
Infant
Infant Food / analysis*
Pesticide Residues / analysis*
Sensitivity and Specificity
Vegetables / chemistry*
Chemical
Reg. No./Substance:
0/Pesticide Residues

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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