Determination of pesticide residues in lettuce by gas chromatography with electron-capture detection.

Determination of pesticide residues in lettuce by gas chromatography with electron-capture detection. Research Abstract Details 

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Determination of pesticide residues in lettuce by gas chromatography with electron-capture detection. Abstract Text:

Jose Fenoll,Pilar Hellin,Josefa Lopez,Alberto Gonzalez,Pilar Flores,

A sensitive, rapid, and simple multiresidue method for the simultaneous determination of 19 pesticides in different varieties of lettuce (Lactuca sativum) was developed. Lettuce samples were extracted by homogenization with acetone and partitioned into ethyl acetate-cyclohexane. Subsequent sample cleanup was not needed. Final determination was made by capillary gas chromatography (GC) with electron-capture detection (ECD). Confirmation analysis of pesticides was performed by GC coupled with mass spectrometry in the selected ion monitoring mode. The average recovery by the GC-ECD method obtained for these compounds varied from 66.4 to 119.2% with relative standard deviations < 7.7%. The GC-ECD method has good linearity, and the detection limit for the pesticides studied varied from 0.1 to 3.8 microg/kg. The proposed method was used to determine pesticide levels in different types of lettuce grown in soils from experimental fields.

Determination of pesticide residues in lettuce by gas chromatography with electron-capture detection. Publishing Authors By Initials

J Fenoll,P Hellin,J Lopez,A Gonzalez,P Flores,

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Determination of pesticide residues in lettuce by gas chromatography with electron-capture detection. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Journal of AOAC International

VOLUME: 90

Page Numbers: 1670-6

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ISSN: 1060-3271

DAY: 15

MONTH: 01

YEAR: 2008

Determination of pesticide residues in lettuce by gas chromatography with electron-capture detection. Information

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LANGUAGE: eng

NlmUniqueID: 9215446

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Grant and Affiliation Information for Determination of pesticide residues in lettuce by gas chromatography with electron-capture detection.

AFFILIATION: Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA), C/Mayor s/n, La Alberca, 30150 Murcia, Spain. jose.fenoll@carm.es

Country: United States

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MEDLINETA: J AOAC Int

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