ANALYTICAL PERFORMANCE OF MICROWAVE ASSISTED SOLVENT EXTRACTION (MASE) FOR ROUTINE DETERMINATION OF PAHs IN POLLUTED SOILS BY GAS CHROMATOGRAPHIC-MASS SPECTROMETRY (GC-MS).

Contenido principal del artículo

José Enrique Sánchez Uría
Estela del Castillo Busto

Resumen

The extraction of PAHs from polluted soil samples using Microwave Assited Solvent Extraction (MASE) with subsequent determination by Gas Chromatography-Mass Spectrometry (GC-MS) was investigated. Optimum conditions for the extraction are established and after the cleansing of extracts, those pollutants were quantified by GC-MS. Detection limits for the 16 US-EPA members of the family, analysis time, precision and linear range of the analysis have been also established. The proposed extraction methodology was compared with the most conventional Soxhlet extraction technique, and validated by applying the MASE to a reference soil sample. Good recoveries for the majority of PAHs (when calibrations were carried out by using internal standards), significant shortening time of analysis and reduction of volume of solvent used were observed. Thus, the MASE sample preparation methodology constitutes a very good alternative to extraction of PAHs from soil samples before the final determination by GC-MS.

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Detalles del artículo

Biografía del autor/a

José Enrique Sánchez Uría, Universidad de Oviedo

Departamento de Química Física y Analítica. Avenida de Julián Clavería número 8. 33006. Oviedo. España.

Profesor

Estela del Castillo Busto, Department Biomedical et Chimie Inorganique Laboratoire National de Metrologie et d´Éssais 1 Rue Gaston Boissier 76724 París

Investigadora

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