Preconcentration and determination of priority pollutant phenols in waters at trace levels using a polymeric solid-phase extraction cartridge

✍ Scribed by Gemma Sirvent; Juan M. Sánchez; Victòria Salvadó

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 513 KB
• Volume: 27
• Category: Article
• ISSN: 1615-9306
• DOI: 10.1002/jssc.200401900

✦ Synopsis

Abstract

A method to preconcentrate and analyse the EPA priority pollutant phenols from water samples is evaluated. Spe‐ed Advanta® cartridges, containing 100 mg of a polymeric matrix modified with polar groups, are used in the extraction and enrichment step. Several parameters are studied in order to find the best experimental conditions to perform a solid‐phase extraction process. Sample flow rate and pH appear as variables that could significantly affect the recoveries obtained. Water samples need a pH adjustment to values lower than 3 units and must be percolated through the cartridges with flow rates over 5 mL min^–1^. The highest recoveries and preconcentrations are obtained using acetonitrile as the elution solvent. Sample volumes from 100 mL to 1 L with concentrations ranging from 50 to 0.5 μg L^–1^ are analysed with quantitative recoveries and similar efficiencies being achieved. After establishing the best conditions, we applied the method to the analysis of spiked natural waters.