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  • Title: Novel cationic surfactant ion pair based solid phase microextraction fiber for nano-level analysis of BTEX.
    Author: Hosseinzadeh R, Tahmasebi R, Farhadi K, Moosavi-Movahedi AA, Jouyban A, Badraghi J.
    Journal: Colloids Surf B Biointerfaces; 2011 May 01; 84(1):13-7. PubMed ID: 21242063.
    Abstract:
    Ion pair of cationic surfactant (cetytrimethylammonium bromide) and tungestosilicic acid incorporated in PVC matrix, was used for coating a piece of copper wire as a new high sensitive SPME fiber in extraction and determination of BTEX compounds from the headspace of water samples prior to GC/FID analysis. Under optimum extraction conditions, limits of detection for benzene, toluene, ethylbenzene, p-xylene, m-xylene and o-xylene were found to be 1.18, 5.61, 0.87, 0.29, 0.22 and 0.33 ng L(-1) respectively. Low detection limits, wide linear dynamic ranges, good reproducibility (RSD% 1.48-4.27), high fiber capacity and high mechanical durability are some of the most important advantages of the new fiber.
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