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Type: Artigo de periódico
Title: Modification of a glass micro-extractor aiming to enrichment of traces of water contaminating organochlorinated pesticides and their quantitative gas chromatographic analysis.
Author: da Rocha, EC
Pini, GF
Augusto, F
Valente, ALP
Abstract: Two models of a glass micro-extractor were constructed after modification of a model proposed in the literature. The two models were used for the simultaneous extraction and enrichment of organochlorinated pesticides from aqueous matrixes to an organic solution appropriate for the gas chromatographic analysis of the pesticide. It was established that the performance of one of the modified micro-extractors permits the pre-concentration of the pesticides to a level that allow their quantitation at the trace level with electron capture detection. It is thus concluded that the glass micro-extractor is a suitable tool for the sample preparation step in the gas chromatographic analysis of environmental pollutants of the class of pesticides.
Subject: pre-concentration of aqueous samples
organochlorinated pesticide
GC analysis
Country: Brasil
Editor: Soc Brasileira Quimica
Rights: aberto
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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