Selective extraction of benzoic acid from landfill leachate by solid-phase extraction and ion-exchange chromatography |
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Authors: | do Nascimento Filho Irajá Schossler Patricia Santos Freitas Lisiane Melecchi Maria Inês S Rodrigues Vale Maria Goreti Bastos Caramão Elina |
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Affiliation: | Food Chemistry Section, Food Science Department, University of Perugia, Via S. Costanzo, 06100 Perugia, Italy. |
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Abstract: | In this work a simple method was described for selective extraction of benzoic acid from landfill leachate samples. The samples were submitted to solid-phase extraction (SPE) with XAD-4 resin as the stationary phase and ion-exchange chromatography (IEC) using the ion-exchange resin Amberlyst A-27. The instrumental analysis was performed by gas chromatography with mass spectrometric detection (GC-MSD). Benzoic acid was isolated, identified and quantified. The extraction process is rapid, simple and of low cost. It was also environmental friendly, that is, it was used a minimum amounts of hazardous organic solvents and produced also minimum quantities of residues. |
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