Produção Nacional
Revisado por pares
Avaliação de solventes de extração por ultrassom usando-se cromatografia líquida de alta eficiência para a determinação de hidrocarbonetos policíclicos aromáticos em solos contaminados
2009; Brazilian Chemical Society; Volume: 32; Issue: 8 Linguagem: Inglês
10.1590/s0100-40422009000800009
ISSN1678-7064
AutoresJussara Aparecida de Oliveira Cotta, Maria Olímpia Oliveira Rezende, Maria Diva Landgraf,
Tópico(s)Toxic Organic Pollutants Impact
ResumoA method using ultrasonication extraction for the determination of 17 polycyclic aromatic hydrocarbons (PAHs), selected by the USEPA and NIOSH as "consent decree" priority pollutants, in soil by High Performance Liquid Chromatography (HPLC) was studied.Separation and detection were completed in 20 min with a C 18 columm, acetonitrile-water gradient elution and ultraviolet absorption and fluorescence detections.The detection limits, for a 10 mL of solution injection, were less than 9,917 ng/g in UV detection and less than 1,866 ng/g in fluorescence detection.Several organic solvents were tested for extraction of the 17 PAHs from soils.Acetone was the best solvent among the three solvents tested, and the order of the extraction efficiencies was: acetone>methanol>acetonitrile.Ultrasonication using acetone as solvent extraction was used to evaluate the biodegradation of those compounds in contaminated soil during a vermicomposting process.
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