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    • 2. 发明申请
    • ANALYTICAL METHOD FOR DETECTING FUEL MARKERS
    • 用于检测燃油标记的分析方法
    • WO2014179646A1
    • 2014-11-06
    • PCT/US2014/036492
    • 2014-05-02
    • DOW GLOBAL TECHNOLOGIES LLC
    • GRAS, Ronda L.LUONG, Jim C.SMITH, Warren E.
    • G01N33/28G01N30/60C10L1/00
    • G01N30/7206C10L1/003G01N30/463G01N30/465G01N30/6078G01N30/7233G01N30/88G01N33/28G01N33/2882G01N2030/042G01N2030/8854
    • A gas chromatographic method for detecting a marker compound in a fuel by (a) introducing a sample of fuel into a first capillary column coated with a stationary phase based on polydimethylsiloxane and allowing the sample to flow through the first column to produce a first effluent; (b) allowing the first effluent to pass through a detector and identifying a retention time range in it which includes a retention time of the marker compound; (c) introducing only a portion of the first effluent stream which is within the retention time range into a second capillary column coated with either (i) an ionic sorbent or (ii) a polyethylene glycol, and allowing said portion to flow through the second capillary column to produce a second effluent stream; and (d) allowing the second effluent to pass through a detector; wherein the marker compound has formula Ar(R 2 ) m (OR 1 ) n and is present in the fuel at a level from 0.01 ppm to 100 ppm.
    • 一种用于通过以下步骤来检测燃料中的标记化合物的气相色谱法:(a)基于聚二甲基硅氧烷将样品引入到具有固定相的第一毛细管柱中并使样品流过第一塔以产生第一流出物; (b)允许第一流出物通过检测器并鉴定其中包含标记化合物的保留时间的保留时间范围; (c)将仅在保留时间范围内的第一流出物流的一部分引入涂覆有(i)离子吸附剂或(ii)聚乙二醇的第二毛细管柱中,并允许所述部分流过第二流出物流 毛细管柱以产生第二流出物流; 和(d)允许第二流出物通过检测器; 其中标记化合物具有式Ar(R 2)m(OR 1)n,并且以0.01ppm至100ppm的水平存在于燃料中。