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    水中药物和个人护理用品的高灵敏度筛查

    发布时间: 2016-07-21 14:33 来源: 安捷伦科技(中国)有限公司
    领域: 化妆品
    样品:水中药物和个人护理用品项目:水中药物和个人护理用品的高灵敏度筛查
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    水中药物和个人护理用品的高灵敏度筛查

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    As a follow up to the Application Note on detection of pharmaceuticals and

    personal care products (PPCPs) in water using the Agilent 6495 Triple Quadrupole

    Mass Spectrometer

    8

    , this Application Note describes two methods to screen and

    quantitate PPCPs in water at part per trillion (ppt) levels using the Agilent 6545

    Q

    -

    TOF LC/

    MS System. Similarly, the methods were divided into positive ion mode

    and negative ion mode due to the unique mobile phases used for the two methods.

    The precise and accurate screening and quantitation of 118 compounds in

    positive ion mode and 22 compou

    nds in negative mode was accomplished on the

    6545 Q

    -

    TOF LC/MS using the Swarm tune parameters optimized for small fragile

    organic molecules. The high sensitivity slicer mode was selected to maximize

    instrument sensitivity. Most of the PPCPs could be det

    ected without tedious

    analyte enrichment such as solid phase extraction (SPE). The extent of sample

    preparation included filtering approximately 3 mL of sample, adding internal

    standards to a 1.0 mL aliquot of the filtered sample, and injecting 40 μL of

    sample

    for analysis by Q

    -

    TOF LC/MS with reporting limits for the majority of analytes at

    10 ppt. The limit of detection (LOD) and lower limit of quantitation (LLOQ) for most

    of the analytes are much lower than 10 ppt


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