Comparison among different extraction methods (PFE, SFE, Sonication, Soxhlet) for the isolation of organic compounds from coal Presented at the Twenty-First International Symposium on Capillary Chromatography and Electrophoresis, Park City, Utah, USA, June 20–24, 1999.

Autor: Assis, Lívia Mari, Pinto, Jair Sebastião Silva, Lanças, Fernando Mauro
Zdroj: Journal of Microcolumn Separations; 2000, Vol. 12 Issue: 5 p292-301, 10p
Abstrakt: This work presents the results of a study involving modern methodologies, such as the ultrasonic extraction, pressurized fluid extraction (PFE) also termed accelerated solvent extraction (ASE), and the extraction with supercritical fluids (SFE) for the isolation of organic compounds from a complex environmental matrix coal. The validation of the results obtained through these techniques was carried out by means of comparison with the results obtained by classical standard extraction method based on Soxhlet. The obtained results demonstrated that SFE present superior performance in the extraction of organic compounds from coal samples than all other investigated techniques (PFE or ASE, Ultrasonic, and Soxhlet). On the other hand, SFE presents the worst selectivity for the extraction of some selected classes such as aromatic hydrocarbons (AHs) and polycyclic aromatic hydrocarbons (PAHs). © 2000 John Wiley & Sons, Inc. J Micro Sep 12: 292–301, 2000
Databáze: Supplemental Index
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