LAAN-E-MS-E021
GCMS
Gas Chromatograph Mass Spectrometer
Analysis of Gasoline Using a GC-MS
21
Regular gasoline was analyzed utilizing a GC-MS. To minimize gasoline fuel consumption, the average boiling point
is adjusted to about 100oC. In addition, as adjustment to the optimal boiling point depends on the air temperature, the
composition will differ between summer and winter, and between cold areas like Hokkaido and hot areas like
Okinawa.
Analysis Conditions
Table 1: Analysis Conditions
GC-MS
: GCMS-QP2010 Ultra
[GC]
Vaporization chamber temperature: 250℃
Column
: HP-PONA (50 mL. x 0.25 mmI.D., 0.50 µm )
Column oven temperature: 40℃ (1min) →(2℃/ min)→150℃
Injection mode
: Split
Carrier gas
: Helium
Control mode
: Constant linear velocity (30.6 cm/sec)
Purge flow rate
: 5.0 mL/min
Split ratio
: 250
Injection quantity
: 1.0 µL
[MS]
Interface temperature
Ion source temperature
Solvent elution time
Data sampling time
Measurement mode
Mass range
Event time
: 250℃
: 200℃
: 0.50 min
: 1 min to 50 min
: Scan
: m/z 35 to 500
: 0.3 sec
Results
Fig. 1 shows the total ion current chromatogram for regular gasoline measured with a GC-MS. Table 1
shows the retention times for the compounds identified.
(x10,000,000)
1.25 TIC
1.00
0.75
0.50
0.25
5.0
10.0
15.0
20.0
25.0
30.0
Fig. 1: Total Ion Current Chromatogram for Regular Gasoline
35.0
40.0
45.0 min
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Table 1: List of Identification Results for Regular Gasoline
Retention time (mm)
Retention
Time
3.240
3.349
3.412
3.467
3.564
3.834
4.020
4.180
4.265
4.329
4.429
4.548
4.625
4.911
5.259
5.304
5.345
5.503
5.518
5.597
5.953
6.070
6.101
6.407
6.452
6.492
6.534
6.604
6.719
6.831
7.024
7.193
7.301
7.390
7.623
7.988
8.113
Compound Name
Isobutane
2-buten
n-butane
trans-2-buten
cis-2-buten
3-methyl-1-buten
Isopentane
1-pentene
2-methyl-1-buten
n-pentane
trans-2-pentene
cis-2-pentene
2-methyl-2-buten
2,2-dimethylbutane
Cyclopentene
4-methyl-1-pentene
3-methyl-1-pentene
cyclopentane
2,3-dimethylbutane
2-methylpentane
3-methylpentane
2-methyl-1-pentene
1-hexene
n-hexane
trans-3-hexene
cis-3-hexene
trans-2-hexene
2-methyl-2-pentene
cis-3-methyl-2-pentene
cis-2-hexene
trans-3-methyl-2-pentene
2,2-dimethylpentane
Methylcyclopentane
2,4-dimethylpentane
2,2,3-methylbutan
2,4-dimethyl-1-pentene
1-methylcyclopentane
Retention
Time
8.160
8.382
8.563
8.533
8.708
8.800
8.864
8.968
9.129
9.257
9.598
9.731
10.144
10.297
10.410
10.538
10.561
10.644
10.754
10.903
11.086
11.501
11.564
12.186
12.309
12.685
13.394
13.563
13.935
14.039
14.212
14.286
14.387
14.782
15.681
15.839
16.432
Compound Name
Benzene
3,3-dimethylpentane
Cyclohexane
cis-2-methyl-3-hexene
4-methyl-1-hexene
4-methyl-2-hexene
2-methylhexane
2,3-dimethylpentane
Cyclohexene
3-methylhexane
trans-1,3-dimethylcyclopentane
cis-1,3-dimethylcyclopentane
cis-3-methyl-3-hexene
trans-3-heptene
n-heptane
2-methyl-2-hexene
cis-3-methyl-2-hexene
trans-2-heptene
3-ethyl-2-pentene
trans-3-methyl-2-hexene
cis-2-heptene
1,2-dimethylcyclopentane
Methylcyclohexane
2,5-dimethylhexane
2,4-dimethylhexane
1,2,4-trimethylcyclopentane
3-ethylcyclopentene
Toluene
2,3-dimethylhexane
2-ethyl-3-methyl-1-pentene
1-methylcyclohexane
2-methylheptane
4-methylheptane
3-methylheptane
1-ethyl-3-methylcyclopentane
1-ethyl-3-methylcyclopentane
4-octene
Retention
Time
16.560
19.239
20.084
20.737
20.816
21.376
21.452
21.973
22.487
24.130
27.388
28.031
28.189
28.641
29.147
29.398
29.889
30.623
32.167
32.770
33.640
35.017
35.238
35.535
35.768
36.440
37.034
37.244
37.381
40.061
40.354
40.626
41.875
42.643
44.788
Compound Name
n-octane
2,5-dimethylheptane
Ethylbenzene
m-xylene
p-xylene
4-methyloctane
2-methyloctane
3-methyloctane
o-xylene
n-nonane
n-propylbenzene
m-ethyltoluene
p-ethyltoluene
1,3,5-trimethylbenzene
4-methylnonane
o-ethyltoluene
3-methylnonane
1,2,4-trimethylbenzene
n-decane
1,2,3-trimethylbenzene
Indan
1,3-diethylbenzene
1-methyl-3-propylbenzene
1-methyl-4-propylbenzene
1,3-dimethyl-5-ethylbenzene
Methyldecane
Methyldecane
1,4-dimethyl-2-ethylbenzene
1,2-dimethyl-4-ethylbenzene
n-undecane
1,2,4,5-tetramethylbenzene
1,2,3,5-tetramethylbenzene
5-Methylindan
2-Methylindan
Naphthalene
For Research Use Only. Not for use in diagnostic procedures.
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publication. Shimadzu does not assume any responsibility or liability for any damage,
whether direct or indirect, relating to, or arising out of the use of this publication. This
publication is based upon the information available to Shimadzu on or before the date of
publication, and subject to change without notice.
First Edition: October 2011