Comparison among different extraction methods (PFE, SFE, Sonication, Soxhlet) for the isolation of organic compounds from coal
✍ Scribed by Lívia Mari Assis; Jair Sebastião Silva Pinto; Fernando Mauro Lanças
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 219 KB
- Volume
- 12
- Category
- Article
- ISSN
- 1040-7685
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✦ Synopsis
This work presents the results of a study involving modern methodolo-Ž . gies, such as the ultrasonic extraction, pressurized fluid extraction PFE also Ž . termed accelerated solvent extraction ASE , and the extraction with supercritical Ž . 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 Ž samples than all other investigated techniques PFE or ASE, Ultrasonic, and . Soxhlet . On the other hand, SFE presents the worst selectivity for the extraction Ž . of some selected classes such as aromatic hydrocarbons AHs and polycyclic Ž . aromatic hydrocarbons PAHs .