A compound having formula (Ph
3
C)
m
Ar(GR)
n
, wherein Ph represents a phenyl group, Ar is an aromatic ring system having from six to twenty carbon atoms; G is O, S, SO or SO
2
; R is: (a) C
1
-C
18
alkyl substituted by at least one of OH, SH, C
1
-C
18
alkoxy and cyano; or (b) C
4
-C
18
heteroalkyl; m is one or two; and n is an integer from one to four.
ANALYTICAL METHOD FOR DETECTING FUEL MARKERS USING TWO GAS CHROMATOGRAPHIC CHANNELS WITH TWO SERIALLY-ARRANGED COLUMNS EACH
申请人:Dow Global Technologies LLC
公开号:EP2959288B1
公开(公告)日:2017-11-22
EP2995606A1
申请人:——
公开号:EP2995606A1
公开(公告)日:2016-03-16
ANALYTICAL METHOD FOR DETECTING FUEL MARKERS
申请人:DOW GLOBAL TECHNOLOGIES LLC
公开号:US20160178602A1
公开(公告)日:2016-06-23
A gas chromatographic method for detecting a first marker and a second marker in a fuel in two channels: (i) a first capillary column coated with polysiloxane and a second capillary column coated with polyethylene glycol; and (ii) a third capillary column coated with polymethylphenylsiloxane and a fourth deactivated capillary column. The steps are: (a) introducing a first sample into the first column to produce a first effluent; (b) introducing only a portion of the first effluent into the second column to produce a second effluent; (c) allowing the second effluent to pass through a mass spectrometer; (d) introducing a second sample into the third column to produce a third effluent; (e) introducing only a portion of the third effluent into the fourth column to produce a fourth effluent; (f) allowing the fourth effluent to pass through a mass spectrometer.