A Novel Liquid-Liquid Microextraction Based on Solidification of Floating Organic Droplet Method for Determination of Phenols in Aqueous Samples
H Faraji1, *, M Mirzaee 2, F Sorkheh 2, M Helalizadeh 2, A.A Tabrizi 2
1 Department of Chemistry, Islamic Azad University Varamin branch, Varamin, Iran
2 Young researchers club, Islamic Azad University Varamin branch, Varamin, Iran
Abstract
Pre-concentration and determination of 7 phenolic compounds in water samples has been achieved using a new liquid-liquid microextraction coupled HPLC-DAD. Microextraction efficiency factors have been investigated and optimized: 14 µL 1-undecanol micro drop exposed for 15 min floated on surface of a 20 mL water sample at 55°C, stirred at 1200 rpm, low pH level and saturated salt conditions. Under the selected conditions, limit of detection of 0.5- 3.0 µg L-1 (S/N=3) and linearity range of 0.3-870 µg L-1 have been obtained. A reasonable repeatability (RSD ≤ 10.1%, n=5) with satisfactory linearity (0.9992 ≥ r2 ≥ 0.9973) of results illustrated a good performance of the present method. The relative recovery of different natural water samples was higher than 84%.
Keywords: Phenols, LPME, Water sample, HPLC-DAD.
Article Information
Article History:
Received Date: 31/8/2009
Revision Received Date: 12/10/2009
Acceptance Date: 10/11/2009
Electronic publication date: 15/1/2010
Collection year: 2010
© Faraji et al.; Licensee Bentham Open.
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (
http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
* Address correspondence to this author at the No 14, Mahdieh 5, Varamin, Iran; P-Code: 3371786837; Tel: +98 292 222 6954; Fax: +98 292 222 4767;
E-mail: hakimfaraji@yahoo.com
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Manuscript submitted on 31-8-2009 |
Original Manuscript |
A Novel Liquid-Liquid Microextraction Based on Solidification of Floating Organic Droplet Method for Determination of Phenols in Aqueous Samples |