DETector Engineering
&
Technology, inc.
486 N.Wiget Lane, Walnut Creek , CA 94598 USA
DET
telephone: (925) 937-4203
fax: (925) 937-7581
innovations in chemical detection
e-mail :
CATALYTIC COMBUSTION IONIZATION DETECTION FORGC
selectivity for compounds containing chains of CH
2
functional groups in
PETROLEUM, BIOFUEL, and FAME (FattyAcid Methyl Ester) samples
AUTODIESELSAMPLE (Valero, 04/09,
N.
Calif.)
16
FlO
12
18
10
14
32768pA full scale
cale
12
FAMEs MIXTURE
1
12
FlO
2
3
4
14-22
1280
pA
full s
6
..8
10
23·29
9
111 13
..... 30-37
5
7\
\
\
--.
-
u
TID-1-~
256
pA
t.s.
8
16 23 31 36
6
TI
0-1 ion source
2.50
A, 90 V
4
10
37
7
14
30 35
5
3
1
~
1!
\
I
rlJ
12
36
31
TIO-1-AIR
16
23
256
pA
f.s.
TID-1 ion source
2.45
A, 90 V
6
36
10
14
TID-1 detection of long chains of CH
2
groups in Fatty
Acid Methyl Esters (FAMEs). Mixture analyzed
contained both Saturated and Unsaturated FAME
compounds. TID-1-Air detected only the Saturates.
16
18
TID-1-Air
Air=60 Nitr.=10 mLlmin
source heat=2.40A
n-alkanes
(Cx)
cale
d
!
TID-1-Nitrogen
a
Air=5 Nitr.=60 mLlmin
ion source heat=2.30 A
20
2048pA full s
12
14
10
9
~
h
2
x
=
8
1
~
~
,I
r
64 pA full scale
The conventional FID detected hundreds of
compounds i n this diesel sample, while the hot
(300-400°C)
T10-1
ceramic in
the
Air environment
selectively ignited combustion ionization from
just Methylene (CH
2 )
groups in the Linear Alkane
components of the sample.
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E-mail :
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