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    National Tsing Hua University Institutional Repository > 理學院 > 化學系 > 期刊論文 >  Solid-phase microextraction coupled with high-performance liquid chromatography for the determination of phenylurea herbicides in aqueous samples


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/57155


    Title: Solid-phase microextraction coupled with high-performance liquid chromatography for the determination of phenylurea herbicides in aqueous samples
    Authors: Lin,Hsin-Hang;Sung,Yu-Hsiang;Huang,Shang-Da
    教師: 黃賢達
    Date: 2003
    Publisher: Elsevier
    Relation: Journal of Chromatography A, Elsevier, Volume 1012, Issue 1, 12 September 2003, Pages 57-66
    Keywords: Ionic strength
    pH effects
    Organic solvents
    Solvent extraction
    Benzene
    High performance liquid chromatography
    Herbicides
    Abstract: Solid-phase microextraction coupled with high-performance liquid chromatography was successfully applied to the analysis of nine phenylurea herbicides (metoxuron, monuron, chlorotoluron, isoproturon, monolinuron, metobromuron, buturon, linuron, and chlorbromuron). Polydimethylsiloxane-divinylbenzene (PDMS-DVB, 60 μm) and Carbowax-templated resin (CW-TPR, 50 μm) fibers were selected from four commercial fibers for further study because of their better extraction efficiencies. The parameters of the desorption procedure were studied and optimized. The effects of the properties of analytes and fiber coatings, carryover, duration and temperature of absorption, pH, organic solvent and ionic strength of samples were also investigated. External calibration with an aqueous standard can be used for the analysis of environmental samples (lake water) using either PDMS-DVB or CW-TPR fibers. Good precisions (1.0 [similar to] 5.9%) are achieved for this method, and the detection limits are at the level of 0.5-5.1 ng/ml.
    URI: http://www.elsevier.com/
    http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/57155
    Appears in Collections:[化學系] 期刊論文

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