A gas chromatographic method is described for the determination of vinclozolin [3-(3,5-dichloro-phenyl)-5-methyl-5-vinyl-1,3-oxazolidine-2,4-dione] and endosulfan (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin 3-oxide) residues in strawberries. After extraction by acetone homogenization and cleanup by Florisil column chromatography, vinclozolin and endosulfan isomers I and II were identified by using an electron-capture detector. Recovery of vinclozolin averaged 93 ± 16% from the various samples fortified at levels ranging from 2.1 to 26.4 ppb. Quantitative recoveries of endosulfan I (91 ± 14%) and endosulfan II (87 ± 24%) at different levels of fortification were also obtained. The detection limit was 0.05 ng for vinclozolin and 0.04 and 0.2 ng for endosulfan I and II. © 1980, American Chemical Society. All rights reserved.
Gas Chromatographic Determination of Vinclozolin and Endosulfan in Strawberries
RONCO C
1980
Abstract
A gas chromatographic method is described for the determination of vinclozolin [3-(3,5-dichloro-phenyl)-5-methyl-5-vinyl-1,3-oxazolidine-2,4-dione] and endosulfan (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin 3-oxide) residues in strawberries. After extraction by acetone homogenization and cleanup by Florisil column chromatography, vinclozolin and endosulfan isomers I and II were identified by using an electron-capture detector. Recovery of vinclozolin averaged 93 ± 16% from the various samples fortified at levels ranging from 2.1 to 26.4 ppb. Quantitative recoveries of endosulfan I (91 ± 14%) and endosulfan II (87 ± 24%) at different levels of fortification were also obtained. The detection limit was 0.05 ng for vinclozolin and 0.04 and 0.2 ng for endosulfan I and II. © 1980, American Chemical Society. All rights reserved.
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