title: A novel application of three phase hollow fiber based liquid phase microextraction (HF-LPME) for the HPLC determination of two endocrine disrupting compounds (EDCs), n-octylphenol and n-nonylphenol, in environmental waters.
abstract: This work proposes for the first time the use of a three phase hollow fiber liquid phase microextraction (HF-LPME) procedure for the extraction, and the later HPLC determination using fluorescence detection, of two much known endocrine disrupting compounds (EDCs): n-octylphenol (OP) and n-nonylphenol (NP). The extraction was carried out through a dihexyl ether liquid membrane supported on an Accurel® Q3/2 polypropylene hollow fiber. Optimum pH for donor and acceptor phases and extraction time were established. Enrichment (preconcentration) factors of 50 were obtained that allows detection limits of 0.54 and 0.52 ng mL(-1) for OP and NP, respectively. The method was successfully applied to the determination of these EDCs in environmental water samples, including urban wastewaters.
authors.affiliation: Department of Analytical Chemistry, Faculty of Chemistry, University of Seville, 41012 Seville, Spain.
authors.forename: Mercedes
authors.initials: M
authors.lastname: Villar-Navarro
authors.forename: María
authors.initials: M
authors.lastname: Ramos-Payán
authors.forename: Rut
authors.initials: R
authors.lastname: Fernández-Torres
authors.forename: Manuel
authors.initials: M
authors.lastname: Callejón-Mochón
authors.forename: Miguel Ángel
authors.initials: MÁ
authors.lastname: Bello-López
mesh_terms: D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D052244:Endocrine Disruptors / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D057230:Limit of Detection; D059627:Liquid Phase Microextraction / Q000379:methods*; D010636:Phenols / Q000032:analysis*; D015203:Reproducibility of Results; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D052244:Endocrine Disruptors; D010636:Phenols; D014874:Water Pollutants, Chemical; C474055:octylphenol; C025256:nonylphenol