Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/7A9D007C-92A0-4CED-8247-6DB570D57F1C | ||
| Year | 2009 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
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| Bibliographic Citation | J.Regueiro , M.Llomparta, .E. Psillakis , J. C. G.Monteagudo , C. G.Jaresa , "Ultrasound assisted emulsification microextraction of phenolic preservatives in water " ,Talan,vol. 79, no.9 ,pp. 1387–1397 ,2009.doi: 10.1016/j.talanta.2009.06.015 https://doi.org/10.1016/j.talanta.2009.06.015 | ||
| Appears in Collections |
Simultaneous ultrasound-assisted emulsification–microextraction (USAEME) and derivatization combinedwith gas chromatography–tandem mass spectrometry (GC–MS/MS) is proposed for the first timefor the analysis of parabens, triclosan and related phenols in water samples. In situ acetylation was successfullyapplied for the derivatization of target compounds with high efficiency using non-expensivereagents. The proposed method exhibits many advantages such as simplicity, efficiency, low cost, andminimum solvent consumption. In addition, the whole analytical process, including sample preparationand determination, is performed in only 20 min.A multifactorial experimental design was employed to study and optimize the main variables potentiallyaffecting the microextraction and derivatization processes (extraction solvent, phase ratio, sodiumchloride concentration, extraction time, and acetic anhydride volume).The performance of the method was studied in terms of accuracy, linearity, precision, and enrichmentfactor. Quantitative recoveries (≥85%)were obtained for all target compounds, and method precisionwasalso satisfactory (RSD≤13%) even for complex samples. Enrichment factors ranging from 100 to 200wereobtained, allowing achieving limits of detection at the low picogram per millilitre for most of the targetcompounds.
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