Assessment of matrix effects in gas chromatography electron capture pesticide-residue analysis

2003 ◽  
Vol 57 (9-10) ◽  
pp. 657-664 ◽  
Author(s):  
M. E. Hernández Torres ◽  
F. J. Egea González ◽  
L. Cuadros-Rodríguez ◽  
E. Almansa López ◽  
J. L. Martínez Vidal
Keyword(s):  
Gas Chromatography ◽  
Electron Capture ◽  
Pesticide Residue ◽  
Matrix Effects ◽  
Residue Analysis ◽  
Pesticide Residue Analysis

scholarly journals Pesticide Residue Analysis of Vegetables by Gas Chromatography with Electron-Capture Detection

2007 ◽  
Vol 90 (1) ◽  
pp. 263-270 ◽  
Author(s):  
José Fenoll ◽  
Pilar Hellín ◽  
Carmen M Martínez ◽  
Pilar Flores
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Electron Capture ◽  
Residue Analysis ◽  
Electron Capture Detection ◽  
Pesticide Residue Analysis ◽  
Selected Ion Monitoring ◽  
Green Pepper ◽  
Relative Standard ◽  
Residue Levels

Abstract A new and original analytical method was developed for the routine analysis of 28 multiclass pesticide residues in vegetables (green pepper, red pepper, and tomato). The extraction was performed with acetone, and the pesticides were partitioned into ethyl acetatecyclohexane (1 + 1, v/v). Residue levels in vegetables were determined by gas chromatography (GC) with electron-capture detection. Residue identities were confirmed by GC coupled with mass spectrometry in the selected ion monitoring mode. The average recoveries in pepper and tomato obtained for all analytes studied were 67.3 and 123.1%, respectively, with relative standard deviation between 1.8 and 7.0%. The detection limit for the pesticides studied varied from 0.1 to 2.6 μg/kg. The proposed method was applied to the analysis of these compounds in vegetables grown in experimental greenhouses.

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