6533b830fe1ef96bd129716d

RESEARCH PRODUCT

A cost-effective method for estimating di(2-ethylhexyl)phthalate in coastal sediments.

Pilar Campíns-falcóRosa Herráez-hernándezA. Argente-garcíaYolanda Moliner-martínezM.t. PicherJorge Verdú-andrésM. Muñoz-ortuño

subject

Detection limitChromatographyOceans and SeasOrganic ChemistryAnalytical chemistryPhthalateEvaporationGeneral MedicineSolid-phase microextractionBiochemistryAnalytical ChemistryMatrix (chemical analysis)Solventchemistry.chemical_compoundchemistryChromatography detectorDiethylhexyl PhthalateSpectroscopy Fourier Transform InfraredSoil PollutantsLasers SemiconductorDispersion (chemistry)Solid Phase MicroextractionChromatography Liquid

description

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.

10.1016/j.chroma.2013.11.018https://pubmed.ncbi.nlm.nih.gov/24290764