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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50872

    Title: Determination of Triclosan in Aqueous Samples Using Solid-phase Extraction Followed by On-line Derivatization Gas Chromatography-Mass Spectrometry
    Authors: Cheng,CY;Wang,YC;Ding,WH
    Contributors: 化學學系
    Date: 2011
    Issue Date: 2012-03-27 18:11:47 (UTC+8)
    Publisher: 國立中央大學
    Abstract: An efficient and eco-friendly injection-port tert-butyldimethylsilylated (TBDMS) derivatization and gas chromatography-mass spectrometry (GC/MS) were developed to determine an antibacterial agent, triclosan (TCS), and its metabolite: methyltriclosan (MTCS), in wastewater and surface water samples. The effects of several parameters related to the TBDMS-derivatization process (i.e., injection-port temperature, residence time and volume of silylating agent) were investigated. This on-line derivatization-coupled large-volume (10 mu L) sample introduction provides sensitive, fast and reproducible results for TCS residue analyses. Each water sample was extracted by reversed-phase C18 solid-phase extraction (SPE) cartridge, and then the recovery efficiency was evaluated using various eluting solutions. Limits of quantitation (LOQs) for MTCS and TCS were 3.0 and 1.0 ng/L in 100 mL of water samples, respectively. Intra- and inter-batch precision with their accuracy were also investigated. The precision for these analytes, as indicated by relative standard deviations (RSDs), proved to be less than 7 and 11%, respectively, for intra- and inter-batch. Accuracy, expressed as the mean recovery, was between 80 and 95%. The method was then applied to environmental water samples, showing the occurrence of TCS in both surface water and municipal wastewater treatment plant (MWTP) influent/effluent samples.
    Appears in Collections:[化學學系] 期刊論文

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