Title of article :
Preparation and characterization of porous carbon material-coated solid-phase microextraction metal fibers
Author/Authors :
Zhu، نويسنده , , Fang and Guo، نويسنده , , Jiaming and Zeng، نويسنده , , Feng and Fu، نويسنده , , Ruowen and Wu، نويسنده , , Dingcai and Luan، نويسنده , , Tiangang and Tong، نويسنده , , Yexiang and Lu، نويسنده , , Tongbu and Ouyang، نويسنده , , Gangfeng، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
7
From page :
7848
To page :
7854
Abstract :
Two kinds of porous carbon materials, including carbon aerogels (CAs), wormhole-like mesoporous carbons (WMCs), were synthesized and used as the coatings of solid-phase microextraction (SPME) fibers. By using stainless steel wire as the supporting core, six types of fibers were prepared with sol–gel method, direct coating method and direct coating plus sol–gel method. Headspace SPME experiments indicated that the extraction efficiencies of the CA fibers are better than those of the WMC fibers, although the surface area of WMCs is much higher than that of CAs. The sol–gel–CA fiber (CA-A) exhibited excellent extraction properties for non-polar compounds (BTEX, benzene, toluene, ethylbenzene, o-xylene), while direct-coated CA fiber (CA-B) presented the best performance in extracting polar compounds (phenols). The two CA fibers showed wide linear ranges, low detection limits (0.008–0.047 μg L−1 for BTEX, 0.15–5.7 μg L−1 for phenols) and good repeatabilities (RSDs less than 4.6% for BTEX, and less than 9.5% for phenols) and satisfying reproducibilities between fibers (RSDs less than 5.2% for BTEX, and less than 9.9% for phenols). These fibers were successfully used for the analysis of water samples from the Pearl River, which demonstrated the applicability of the home-made CA fibers.
Keywords :
Solid-phase microextraction , Porous carbon material , Fiber coating , Sol–gel , Phenols , BTEX
Journal title :
Journal of Chromatography A
Serial Year :
2010
Journal title :
Journal of Chromatography A
Record number :
1513608
Link To Document :
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