Selective extraction of benzoic acid from landfill leachate by solid-phase extraction and ion-exchange chromatography

• Published in: Journal of Chromatography A Vol. 1027; no. 1; pp. 167 - 170
• Main Authors: do Nascimento Filho, Irajá, Schossler, Patricia, Santos Freitas, Lisiane, Melecchi, Maria Inês S, Rodrigues Vale, Maria Goreti, Bastos Caramão, Elina
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 20.02.2004; Elsevier
• Subjects: Analysis methods; Analytical chemistry; Applied sciences; Benzoic acid; Benzoic Acid - analysis; Chemistry; Chromatographic methods and physical methods associated with chromatography; Environmental analysis; Exact sciences and technology; Gas chromatographic methods; Gas Chromatography-Mass Spectrometry - methods; Ion Exchange Resins; Landfill leachates; Pollution; Wastes; Benzoic acid; Landfill leachates; Environmental analysis; Trace analysis; Solid phase extraction; Chemical analysis; Coupled method; Ion exchange chromatography; Chemical enrichment; Gas chromatography; Sanitary landfill; Sample preparation; Carboxylic acid; Leachate; Mass spectrometry
• ISSN: 0021-9673
• DOI: 10.1016/j.chroma.2003.10.044

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.