Artículos de revistas
Modification Of A Glass Micro-extractor Aiming To Enrichmentt Of Traces Of Water Contaminating Organochlorinated Pesticides And Their Quantitative Gas Chromatographic Analysis [modificação De Um Microextrator De Vidro Para Pré-enriquecimento De Traços De Pesticidas Organoclorados De água Para Análise Por Cromatografia Gasosa]
Registro en:
Quimica Nova. Sociedade Brasileira De Quimica, v. 21, n. 1, p. 109 - 113, 1998.
1004042
2-s2.0-36148977385
Autor
Da Rocha E.C.
Pini G.F.
Augusto F.
Valente A.L.P.
Institución
Resumen
Two models of a glass micro-extrac-tor 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. 21 1 109 113 Mol, H.G.S., Janssen, H.M., Cramers, C.A., Vreuls, J.J., Brinkman, U.A., (1995) J. Chromatogr., 703, p. 277 Zapf, A., Heyer, R., Stan, H., (1995) J. Chromatogr., 694, p. 453 Namiesnik, J., Górecki, T., Biziuk, M., Torres, L., (1990) Anal. Chim. Acta, 237, p. 1 Polle, S.K., Dean, T.A., Udsema, J.W., Polle, C.F., (1990) Anal. Chim. Acta, 236, p. 3 Onuska, F.I., (1989) J. High Resolut. Chromatogr., 12, p. 4 Durand, G., Bouvot, V., Barceló, D., (1992) J. Chromatogr., 607, p. 319 Di Corsia, A., Marchetti, M., (1991) Anal. Chem., 63, p. 580 Marvin, C.H., Brindle, I.D., Hall, C.D., Chiba, M., (1990) J. Chromatogr., 503, p. 167 Godefroot, M., Stechele, M., Sandra, P., Verzele, M., (1982) J. High Resolut. Chromatogr., 5, p. 75 Curves, J., Noij, T., Cramers, C., Rijiks, J., (1984) Chromato-graphia, 19, p. 225 Seidel, V., Lindner, W., (1993) Anal. Chem., 65, p. 3677 Augusto, F., (1990) Dissertação de Mestrado, , Unicamp, Campinas Rocha, E.C., (1994) Dissertação de Mestrado, , Unicamp, Campinas Katherine, F.P., Pawliszyn, J., (1992) Anal. Chem., 64, p. 2107