title: Determination of non-steroidal anti-inflammatory drugs in wastewaters by magnetic matrix solid phase dispersion-HPLC.
abstract: A series of supports functionalized with different alkyl chains and covered with magnetite were synthesized, characterized and applied in the sample pre-concentration of four non-steroidal anti-inflammatory drugs (acetaminophen, naproxen, diclofenac and ibuprofen) contained in wastewater samples. The general methodology involved magnetic solid phase dispersion followed by the analysis by high-performance liquid chromatography with ultraviolet detection. The magnetic supports were initially dispersed in the samples with the aid of Triton X-100, then supports were magnetically isolated and the analytes were eluted with methanol. Finally the extract was injected into the HPLC system. The highest recovery percentage (>90%) was obtained with the support containing octyl chains (C8) at pH 3. The lowest limits of detection achieved ranged within 1-2microgL(-1) with repeatability (expressed as RSD) below 5% in all cases. The method was applied in the analysis of wastewater samples.
authors.affiliation: Centro de Investigaciones Químicas, Universidad Autónoma del Estado de Hidalgo, Carr. Pachuca Tulancingo Km 4.5, 42074, Pachuca, Hgo, Mexico.
authors.forename: K
authors.initials: K
authors.lastname: Aguilar-Arteaga
authors.forename: J A
authors.initials: JA
authors.lastname: Rodriguez
authors.forename: J M
authors.initials: JM
authors.lastname: Miranda
authors.forename: J
authors.initials: J
authors.lastname: Medina
authors.forename: E
authors.initials: E
authors.lastname: Barrado
mesh_terms: D000327:Adsorption; D053000:Analytic Sample Preparation Methods; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D004785:Environmental Pollutants / Q000032:analysis* / Q000737:chemistry / Q000302:isolation & purification*; D008280:Magnetics; D052616:Solid Phase Extraction; D014466:Ultraviolet Rays; D018505:Waste Management; D014867:Water / Q000737:chemistry*
chemical_list: D000894:Anti-Inflammatory Agents, Non-Steroidal; D004785:Environmental Pollutants; D014867:Water