Journal
TALANTA
Volume 76, Issue 4, Pages 718-723Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.talanta.2008.03.002
Keywords
liquid-phase microextraction (LPME); phthalate esters; gas chromatography-mass spectrometry (GC-MS); water samples
Categories
Funding
- University of Tehran Research Council
Ask authors/readers for more resources
A simple and efficient liquid-phase microextraction (LPME) technique was developed using directly suspended organic microdrop coupled with gas chromatography-mass spectrometry (GC-MS), for the extraction and the determination of phthalate esters (dimethyl phthalate, diethyl phthalate, diallyl phthalate, di-n-butyl phthalate (DnBP), benzyl butyl phthalate (BBP), dicyclohexyl phthalate and di-2-ethylhexyl phthalate (DEHP)) in water samples. Microextraction efficiency factors, such as nature and volume of the organic solvent, temperature, salt effect, stirring rate and the extraction time were investigated and optimized. Under the optimized extraction conditions (extraction solvent: 1-dodecanol; extraction temperature: 60 degrees C; microdrop volume: 7 mu L; stirring rate: 750 rpm, without salt addition and extraction time: 25 min), figures of merit of the proposed method were evaluated. The values of the detection limit were in the range of 0.02-0.05 mu g L(-1), while the R.S.D.% value for the analysis of 5.0 mu g L(-1) of the analytes was below 7.7% (n = 4). A good linearity (r(2) >= 0.9940) and a broad linear range (0.05-100 mu g L(-1)) were obtained. The method exhibited enrichment factor values ranging from 307 to 412. Finally, the designed method was successfully applied for the preconcentration and determination of the studied phthalate esters in different real water samples and satisfactory results were attained. (C) 2008 Published by Elsevier B.V.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available