title: Determination of phenolic compounds in environmental water samples after solid-phase extraction with β-cyclodextrin-bonded silica particles coupled with a novel liquid-phase microextraction followed by gas chromatography-mass spectrometry.
abstract: A novel approach for the sample pre-treatment and determination of eight phenolic compounds in environmental water samples has been developed by hyphenating solid-phase extraction (SPE) and liquid-phase microextraction (LPME) techniques based on solid organic drop combined with gas chromatography-mass spectrometry detection (GC-MS). After pre-concentration and purification of the sample through column containing 60 mg of β-cyclodextrin-bonded silica particles as stationary phase, under the optimum conditions, LPME technique has been performed on the eluent solution. Under the selected conditions, limit of detection (LOD) of 0.002-0.04 μg/L (S/N=3), limit of quantification (LOQ) of 0.007-0.15 μg/L (S/N=10), pre-concentration factor of 752-3135 and linearity range of 0.01-25 μg/L have been obtained. A reasonable repeatability (RSD≤9.5%, n=5) with satisfactory coefficient of determination has been obtained between 0.9981 and 0.9997. The relative recoveries of the waste, sea, river and well water samples were higher than 79%.
authors.affiliation: Department of Chemistry, Varamin Branch, Islamic Azad University, Varamin, Iran. hakimfaraji@yahoo.com
authors.forename: Hakim
authors.initials: H
authors.lastname: Faraji
authors.forename: Syed W
authors.initials: SW
authors.lastname: Husain
authors.forename: Masoumeh
authors.initials: M
authors.lastname: Helalizadeh
mesh_terms: D000327:Adsorption; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D059627:Liquid Phase Microextraction / Q000379:methods*; D010636:Phenols / Q000032:analysis* / Q000302:isolation & purification*; D045483:Rivers / Q000737:chemistry; D012623:Seawater / Q000737:chemistry; D012822:Silicon Dioxide / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000302:isolation & purification*; D047392:beta-Cyclodextrins / Q000737:chemistry
chemical_list: D010636:Phenols; D014874:Water Pollutants, Chemical; D047392:beta-Cyclodextrins; D012822:Silicon Dioxide