Determination of pesticide residues in olives and olive oil by matrix solid-phase dispersion followed by gas chromatography/mass spectrometry and liquid chromatography/tandem mass spectrometry

2005 ◽  
Vol 1069 (2) ◽  
pp. 183-194 ◽  
Author(s):  
Carmen Ferrer ◽  
M. Jose Gómez ◽  
Juan F. García-Reyes ◽  
Imma Ferrer ◽  
E. Michael Thurman ◽  
...  
2002 ◽  
Vol 85 (3) ◽  
pp. 724-730 ◽  
Author(s):  
Daniela Perret ◽  
Alessandra Gentili ◽  
Stefano Marchese ◽  
Manuel Sergi ◽  
Giuseppe D'Ascenzo

Abstract A multiresidue method was developed and validated for the determination of pesticide residues (omethoate, dimethoate, carbendazim, propoxur, thiabendazole, carbaryl, pirimicarb, azinphos-methyl, methidathion, and iprodione) in fruit juices. The samples were extracted by matrix solid-phase dispersion with diatomaceous earth and analyzed by liquid chromatography/tandem mass spectrometry. The method detection limits were <0.2 ppb for all pesticides; the relative standard deviations for analyses of samples fortified over the range of 2–50 ng/g were <9%, and the recoveries for each pesticide were all between 77 and 102%. The proposed method was used to analyze 21 commercial fruit juices; pesticide residues were found in 71% of the samples.


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