title: Determination of diethylhexyl phtalate in water by solid phase microextraction coupled to high performance liquid chromatography.
abstract: Difficulties detected in the determination of the diethylhexylphthalate (DEHP) at trace levels by gas chromatography-mass spectrometry (GC-MS) using SPME, due to its ubiquitous distribution in the environment has been overcome and a new method for the determination of DEHP in drinking water has been proposed. The method is based on solid phase microextraction (SPME) coupled to high-performance liquid chromatography (HPLC). Detection was carried out spectrophotometrically. Calibration graph was linear in the range 10-110 microg/L with a regression coefficient of r(2)=0.998 and a detection limit of 0.6 microg/L. The relative standard deviation was 5 and 2% (n=4) for chromatographic areas and retention times, respectively. The usefulness of the SPME-HPLC technique was confirmed.
authors.affiliation: Mass Spectrometry Service, Faculty of Chemistry, Complutense University of Madrid, Madrid, Spain. kayali@quim.ucm.es
authors.forename: Nour
authors.initials: N
authors.lastname: Kayali
authors.forename: Fernando G
authors.initials: FG
authors.lastname: Tamayo
authors.forename: Luis M
authors.initials: LM
authors.lastname: Polo-Díez