Determining Ten Synthetic Pyrethroids in Lettuce and Ground Meat by Using Ion-Trap Mass Spectrometry and Electron-Capture Gas Chromatography

Conventional extraction procedures with acetonitrile were compared with supercritical fluid extraction (SFE) with CO2 for determining 10 pyrethroids in fortified lettuce and meat samples. Because SFE utilized a minimal cleanup procedure, nonvolatiles may accumulate on the capillary column in both th...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 1997-01, Vol.45 (1), p.180-184
Main Authors: Argauer, Robert J, Eller, Konstantin I, Pfeil, Richard M, Brown, Richard T
Format: Article
Language:English
Subjects:
ANALYTICAL METHODS
BEEF
Biological and medical sciences
CARNE DE RES
CHEMICAL COMPOSITION
CHROMATOGRAPHIE EN PHASE GAZEUSE
COMPOSICION QUIMICA
COMPOSITION CHIMIQUE
CROMATOGRAFIA DE GASES
ESPECTROMETRIA DE MASAS
EXTRACCION
EXTRACCION SUPERCRITICO DE FLUIDO
EXTRACTION
EXTRACTION AU FLUIDE SUPERCRITIQUE
Food industries
Food toxicology
Fundamental and applied biological sciences. Psychology
GAS CHROMATOGRAPHY
GROUND BEEF
LAITUE
LECHUGAS
LETTUCES
MASS SPECTROMETRY
MULTIRESIDUE ANALYSIS
PESTICIDE
PESTICIDES
PIRETRINAS SINTETICAS
PLAGUICIDAS
PYRETHRINE DE SYNTHESE
RESIDU
RESIDUES
RESIDUOS
SPECTROMETRIE DE MASSE
SUPERCRITICAL FLUID EXTRACTION
SYNTHETIC PYRETHRINS
TECHNIQUE ANALYTIQUE
TECNICAS ANALITICAS
VIANDE BOVINE
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Description
Summary:Conventional extraction procedures with acetonitrile were compared with supercritical fluid extraction (SFE) with CO2 for determining 10 pyrethroids in fortified lettuce and meat samples. Because SFE utilized a minimal cleanup procedure, nonvolatiles may accumulate on the capillary column in both the gas chromatography-ion trap mass spectrometry (GC-ITMS) and electron capture (EC) detection modes shortening the lifetime of the columns after multiple injections. The GC-ITMS method proved satisfactory for analysis of lettuce whereas EC-GC proved more suitable for residue analysis of meat samples. Improvements in multiresidue methods for monitoring of synthetic pyrethroids in raw agricultural commodities should aid in registration and reregistration activities. Keywords: SFE; insecticides; meat; fat; ion-trap
ISSN:0021-8561
1520-5118
DOI:10.1021/jf960121b