发明名称 |
ANALYTICAL METHOD FOR DETECTING FUEL MARKERS |
摘要 |
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(R2)m(OR1)n and is present in the fuel at a level from 0.01 ppm to 100 ppm. |
申请公布号 |
EP2959290(A1) |
申请公布日期 |
2015.12.30 |
申请号 |
EP20140728762 |
申请日期 |
2014.05.02 |
申请人 |
DOW GLOBAL TECHNOLOGIES LLC;ROHM AND HAAS COMPANY |
发明人 |
GRAS, RONDA L.;LUONG, JIM C.;SMITH, WARREN E. |
分类号 |
G01N33/28;C10L1/00;G01N30/60 |
主分类号 |
G01N33/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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