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

作者：Munoz Ortuno M; Argente Garcia A; Moliner Martinez Y; Verdu Andres J; Herraez Hernandez R; Picher M T; Campins Falco P^*

来源：Journal of Chromatography A, 2014, 1324: 57-62.

DOI：10.1016/j.chroma.2013.11.018

• Sediment
• Di(2-ethylhexyl)phthalate
• Short capillary particulate column
• Matrix solid phase dispersion

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 C-18 as dispersant phase (0.4g) 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 C-18 (35 X 0.5 mm, 5 mu m) 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 mu g/kg for 0.1 and 0.3 g of taken sediment, respectively.

• 出版日期2014-1-10