Cleanup by solid-phase extraction and HPLC of organochlorine insecticides and PCBs in various nonfatty and fatty samples

An accurate, simple and cheap extraction and cleanup procedure for capillary GC analysis of organochlorine insecticides (OCs) in vegetables (cabbage and carrots) at the ng/g level, and for soil at the microgram/g level is presented. The cleanup is carried out on solid-phase extraction (SPE) cartridg...

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Bibliographic Details
Published inToxicological and environmental chemistry Vol. 34; no. 2/4; pp. 219 - 235
Main Authors Noegrohati, S, Hammers, W.E
Format Journal Article
LanguageEnglish
Published 01.01.1992
Subjects
chemical analysis
extraction
high performance liquid chromatography
organochlorine insecticides
pesticide residues
polychlorinated biphenyls
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Summary:An accurate, simple and cheap extraction and cleanup procedure for capillary GC analysis of organochlorine insecticides (OCs) in vegetables (cabbage and carrots) at the ng/g level, and for soil at the microgram/g level is presented. The cleanup is carried out on solid-phase extraction (SPE) cartridges, filled with 500 mg silica, 1 g of deactivated Florisil (10% w/w water), and 100 mg of anhydrous sodium sulphate. Recoveries > 90% are obtained. The cleanup of OCs in fatty samples on an HPLC LiChrosorb Si 100 column is evaluated for subsequent capillary GC analysis. Fractionation of OCs and Aroclor 1254 and 1260 on an HPLC Nucleosil 100 column appears to be satisfactory.
ISSN:0277-2248
1029-0486
DOI:10.1080/02772249209357792