title: A cost-effective method for estimating di(2-ethylhexyl)phthalate in coastal sediments.
abstract: This study describes the development of a new method for the analysis of di(2-ethylhexyl)phthalate (DEHP) using 0.1-0.3 g of sediment sample, based on matrix solid phase dispersion (MSPD) using C18 as dispersant phase (0.4 g) and acetonitrile-water as eluting solvent (3.4 mL 1:3.25, v/v). No evaporation step is required. 3 mL of extracts were processed on-line by in-tube solid phase microextraction (IT-SPME) coupled to capillary liquid chromatography (CapLC) and diode array detector (DAD). A short analytical column Zorbax SB C18 (35×0.5 mm, 5 μm) provided suitable results. FTIR-ATR was employed for characterizing sediment samples and MSPD procedure. The total analysis time was less than 20 min (MSPD takes about 10 min). The utility of the described approach has been tested by analyzing several real samples. No matrix effect was found. Achieved precision was less than 10% for DEHP estimation. Detection limits in samples were 270 and 90 μg/kg for 0.1 and 0.3 g of taken sediment, respectively.
authors.affiliation: Departamento Química Analítica, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, Burjassot, 46100 Valencia, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Muñoz-Ortuño
authors.affiliation: Departamento Química Analítica, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, Burjassot, 46100 Valencia, Spain.
authors.forename: A
authors.initials: A
authors.lastname: Argente-García
authors.affiliation: Departamento Química Analítica, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, Burjassot, 46100 Valencia, Spain.
authors.forename: Y
authors.initials: Y
authors.lastname: Moliner-Martínez
authors.affiliation: Departamento Química Analítica, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, Burjassot, 46100 Valencia, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Verdú-Andrés
authors.affiliation: Departamento Química Analítica, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, Burjassot, 46100 Valencia, Spain.
authors.forename: R
authors.initials: R
authors.lastname: Herráez-Hernández
authors.affiliation: Departamento Química Orgánica, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, Burjassot, 46100 Valencia, Spain.
authors.forename: M T
authors.initials: MT
authors.lastname: Picher
authors.affiliation: Departamento Química Analítica, Facultad de Química, Universidad de Valencia, Dr. Moliner 50, Burjassot, 46100 Valencia, Spain. Electronic address: Pilar.campins@uv.es.
authors.forename: P
authors.initials: P
authors.lastname: Campíns-Falcó
mesh_terms: D002853:Chromatography, Liquid / Q000191:economics / Q000379:methods*; D004051:Diethylhexyl Phthalate / Q000032:analysis*; D054023:Lasers, Semiconductor; D009792:Oceans and Seas; D012989:Soil Pollutants / Q000032:analysis*; D052617:Solid Phase Microextraction / Q000191:economics / Q000379:methods*; D017550:Spectroscopy, Fourier Transform Infrared / Q000191:economics / Q000379:methods*
chemical_list: D012989:Soil Pollutants; D004051:Diethylhexyl Phthalate
keywords: Di(2-ethylhexyl)phthalate; Matrix solid phase dispersion; Sediment; Short capillary particulate column