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Title
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Miniaturized method based on matrix solid-phase dispersion for the rapid screening of 36 pesticides in agricultural food commodities
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Author
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Abstract
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| Matrix solid-phase dispersion and gas chromatography-mass spectrometry were used for the rapid screening of 36 pesticides in agricultural products. Homogenized sample (0.5 g), C8-modified silica (0.5 g) and Na2SO4 (1 g) were mixed and transferred to a cartridge containing activated silica (0.5 g). Best recoveries (>60%) were found using dichloromethane-ethyl acetate (4:1) for elution. Analytical characteristics at spiking levels (10-100 μg/kg) were calculated for each pesticide. Matrix effects were studied by comparing the slopes of the matrix-matched calibration curves. Fruit and vegetable samples from South Africa complied with EU and South African current regulation, except for cypermethrin in green beans. |
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Language
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English
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Source (journal)
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Analytical letters. - New York, NY
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Publication
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New York, NY
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2010
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ISSN
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0003-2719
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DOI
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10.1080/00032710903518807
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Volume/pages
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43
:7/8
(2010)
, p. 1400-1410
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ISI
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000277838400031
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Full text (Publisher's DOI)
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