min.
4
8
12
16
20
24
28
1
2
3
4
5
6
7
8
1. thiophene
2. 2-methylthiophene
3. 3-methylthiophene
4. 2-ethylthiophene
5. alkylthiophenes
6. benzothiophene
7. methylbenzothiophenes
8. dimethylbenzothiophenes
Sulfur in Gasoline
Rtx®-1
GC_PC00198
Column:
Rtx
®
-1, 30m, 0.32mm ID, 4.0µm (cat.# 10198)
Sample:
1.0µL split injection of gasoline containing 300ppm
total sulfur
Oven temp.:
40°C (hold 3 min.) to 275°C @ 10°C/min.
(hold 5 min.)
Inj./det. temp.:
275°C
Det.:
SCD
Carrier gas:
helium
Linear velocity:
70cm/sec. (flow rate: 2.5mL/min.)
Split ratio:
10:1
Column:
Rt
®
-XLSulfur micropacked column, 1m, 0.75mm ID
(cat.# 19806)
Conc.:
50ppb each
Oven temp.:
60°C to 230°C @ 15°C/min.
Carrier gas:
helium
Flow rate:
9mL/min.
Det.:
SCD/FID
Sulfur standards courtesy of DCG Partnership 1 Ltd., Pearland, TX.
Sulfur Compounds
Rt®-XLSulfur
(micropacked)
sulfurs
1. hydrogen sulfide
2. carbonyl sulfide
3. methyl mercaptan
4. ethyl mercaptan
5. dimethyl sulfide
6. dimethyl disulfide
hydrocarbons
A. methane
B. ethane
C. propylene
D. propane
E. isobutane
F. butane
G. isopentane
H. pentane
I. hexane
1
2
3
4/5
6
min.
2
4
6
8
10
GC_PC00436
A B
C
D
E
F
G
H
I
Sulfur Compounds
Rxi®-1ms
GC_AR00861
Column:
Rxi
®
-1ms, 30m, 0.32mm ID, 4.00µm (cat.# 13396)
Sample:
hydrogen sulfide, carbonyl sulfide, methyl mercaptan,
ethyl mercaptan, dimethyl sulfide, 100 ppbv each in helium
Inj.:
1mL splitless, direct
Sample loop temp.: 30°C
Carrier gas:
helium, constant pressure
Linear velocity:
48cm/sec. @ 30°C
Oven temp.:
30°C
Det.:
sulfur chemiluminescence detector
Det. temp.:
800°C
Sample storage & transfer:
SilcoCan
®
air monitoring canister with Siltek
®
treated
1
/
4
" valve (cat.# 24182-650);
Sulfinert
®
treated gas sample loop, 1cc (cat.# 22848); Sulfinert
®
treated gas sample loop,
10cc (custom order)
1. hydrogen sulfide
2. carbonyl sulfide
3. methyl mercaptan
4. ethyl mercaptan
5. dimethyl sulfide
Rxi® Technology!
Exceptionally inert,
ultra low- bleed
capillary columns.
664
GC CHROMATOGRAMS |
PETROLEUM & PETROCHEMICAL
Hydrocarbons (High-Temperature), Sulfur Compounds
GC_PC1172
Midrange Crude on Rxi®-5HT
Peaks
1. C17
2. Pristane
3. C18
4. Phytane
Column
Rxi
®
-5HT, 30 m, 0.32 mm ID, 0.10 µm (cat.# 13909)
using retention gap 2 m, 0.53 mm ID,
Sample
Midrange crude
Conc.:
500 µg/mL
Injection
Inj. Vol.:
1.0 µL cold on-column
Oven
Oven Temp:
50 °C to 300 °C at 10 °C/min. (hold 10 min.)
Carrier Gas
H
2
, constant flow
Linear Velocity:
40 cm/sec.
Detector
FID @ 330 °C
Instrument
Agilent/HP6890 GC
Acknowledgement Sample courtesy of Exxon Mobil Corporation
NEW!
Website :
E-mail :
TelNo : 03 9762 2034 . . . in AUSTRALIA
Mar 2011
