Immersed solvent microextraction of phenol and chlorophenols from water samples followed by gas chromatography-mass spectrometry

被引:108
作者
Bagheri, H [1 ]
Saber, A [1 ]
Mousavi, SR [1 ]
机构
[1] Sharif Univ Technol, Dept Chem, Tehran, Iran
关键词
water analysis; immersed solvent microextraction; phenol; chlorophenols;
D O I
10.1016/j.chroma.2004.06.062
中图分类号
Q5 [生物化学];
学科分类号
071010 ; 081704 ;
摘要
A homemade immersed solvent microextraction (SME) device was successfully developed for the trace enrichment of phenols from aqueous samples. A microdrop of butyl acetate was suspended from the tip of a microsyringe needle, immersed in an aqueous spiked solution for a preset time. The microdrop was then retracted into the microsyringe and injected directly into a gas chromatography-mass spectrometry (GC-MS) injection port. Effects of different parameters such as the type of solvent, extraction time, stirring rate, and temperature were investigated and optimized. To reduce the polarity of phenols and prevent tailing effects, all the phenols were derivatized prior to extraction using acetic anhydride in basic media. The enrichment factor and linearity was studied by preconcentration of 1 ml of HPLC-grade and river water, spiked with a standard solution of phenols at a concentration range of 0.05-50 mug l(-1) (R.S.D. < 10%). The correlation coefficient was satisfactory (r(2) > 0.98) for all the studied analytes. Detection limits were obtained using HPLC-grade and river water, i.e. 5-22 ng l(-1). The proposed method was successfully applied to the extraction and determination of some environmentally important phenols in different water samples. (C) 2004 Elsevier B.V. All fights reserved.
引用
收藏
页码:27 / 33
页数:7
相关论文
共 32 条
[1]  
[Anonymous], TRENDS ANAL CHEM
[2]   On-line trace enrichment of phenolic compounds from water using a pyrrole-based polymer as the solid-phase extraction sorbent coupled with high-performance liquid chromatography [J].
Bagheri, H ;
Mohammadi, A ;
Salemi, A .
ANALYTICA CHIMICA ACTA, 2004, 513 (02) :445-449
[3]   Pyrrole-based conductive polymer as the solid-phase extraction medium for the preconcentration of environmental pollutants in water samples followed by gas chromatography with flame ionization and mass spectrometry detection [J].
Bagheri, H ;
Mohammadi, A .
JOURNAL OF CHROMATOGRAPHY A, 2003, 1015 (1-2) :23-30
[4]   Conductive polymers as new media for solid-phase extraction: Isolation of chlorophenols from water sample [J].
Bagheri, H ;
Saraji, M .
JOURNAL OF CHROMATOGRAPHY A, 2003, 986 (01) :111-119
[5]   New polymeric sorbent for the solid-phase extraction of chlorophenols from water samples followed by gas chromatography-electron-capture detection [J].
Bagheri, H ;
Saraji, M .
JOURNAL OF CHROMATOGRAPHY A, 2001, 910 (01) :87-93
[6]   Determination of phenols by solid-phase microextraction [J].
Bartak, P ;
Cap, L .
JOURNAL OF CHROMATOGRAPHY A, 1997, 767 (1-2) :171-175
[7]   Application of liquid-phase microextraction and gas chromatography-mass spectrometry for the determination of polychlorinated biphenyls in blood plasma [J].
Basheer, C ;
Lee, HK ;
Obbard, JP .
JOURNAL OF CHROMATOGRAPHY A, 2004, 1022 (1-2) :161-169
[8]   IDENTIFICATION AND QUANTIFICATION OF MONOHYDROXYBENZENES, DIHYDROXYBENZENES AND TRIHYDROXYBENZENES (PHENOLS) AT TRACE CONCENTRATIONS IN SEAWATER BY AQUEOUS ACETYLATION AND GAS-CHROMATOGRAPHIC MASS-SPECTROMETRIC ANALYSIS [J].
BOYD, TJ .
JOURNAL OF CHROMATOGRAPHY A, 1994, 662 (02) :281-292
[9]   OPTIMIZATION OF SOLID-PHASE MICROEXTRACTION CONDITIONS FOR DETERMINATION OF PHENOLS [J].
BUCHHOLZ, KD ;
PAWLISZYN, J .
ANALYTICAL CHEMISTRY, 1994, 66 (01) :160-167
[10]   DETERMINATION OF PHENOLS BY SOLID-PHASE MICROEXTRACTION AND GAS-CHROMATOGRAPHIC ANALYSIS [J].
BUCHHOLZ, KD ;
PAWLISZYN, J .
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 1993, 27 (13) :2844-2848