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    Title: A liquid-phase microextraction method, combining a dual gauge microsyringe with a hollow fiber membrane, for the determination of organochlorine pesticides in aqueous solution by gas chromatography/ion trap mass spectrometry
    Authors: Yan, C. H.;吳慧芬;Wu, Hui-fen
    Contributors: 淡江大學化學學系
    Date: 2004-12-30
    Issue Date: 2009-12-01
    Publisher: John Wiley & Sons
    Abstract: A liquid-phase microextraction (LPME) method has been demonstrated for the extraction and determination of organochlorine pesticides (OCPs) in aqueous solution. The method combines a dual gauge microsyringe with a hollow fiber membrane (LPME/DGM-HF) followed by detection by gas chromatography/ion trap mass spectrometry (GC/ITMS). The advantages include speed, low solvent and sample consumption, simplicity and ease of use. The extraction time, solvent selection, salt concentration and sample stirring rate have been investigated in order to optimize extraction efficiency. The viability is evaluated by measuring the linearity and detection limit of the five OCPs in aqueous solution. Detection linearity for the OCPs has been achieved over a range of concentrations between 1 and 500 μg/L (r2 > 0.930), with a detection limit of 0.1 μg/L for each OCP.
    Relation: Rapid Communications in Mass Spectrometry 18(24), pp.3015-3018
    DOI: 10.1002/rcm.1722
    Appears in Collections:[化學學系暨研究所] 期刊論文

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