Extraction and clean-up procedure for analysis of organochlorine pesticide residues in ethoxylated lanolin
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Data
2000-09-01
Autores
Polese, L.
Sannomiya, M.
Sader, APD
Ribeiro, M. L.
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
In the present study an evaluation was made of a method for the determination of organochlorine pesticide residues in ethoxylated lanolin. Samples were homogenized with Celite, transferred to chromatographic columns, prepacked with silica gel deactivated to 10%. The pesticide elution was processed with n-hexane-dichloromethane and the concentrated eluate was analyzed using gas-liquid chromatography (GC) with electron capture detection (ECD). The composition of the elution solvent was a significant factor for the recovery of the pesticides. Mean recoveries obtained for fortified samples ranged from 87 to 94% for p,p'-DDE, dieldrin, endrin, p,p'-DDD and p,p'-DDT. Optimization of the experimental conditions resulted in a small-scale method that combines extraction and cleanup in a single step. (C) 2000 Elsevier B.V. S.A. All rights reserved.
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Palavras-chave
organochlorine pesticides, ethoxylated lanolin, gas chromatography
Como citar
Farmaco. Lausanne: Elsevier B.V. Sa, v. 55, n. 9-10, p. 637-640, 2000.