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 inGasoline
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 3min.) to 275°C@ 10°C/min.
(hold 5min.)
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
®
-XLSulfurmicropacked 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.
SulfurCompounds
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
SulfurCompounds
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
®
airmonitoring 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
GCCHROMATOGRAMS |
PETROLEUM&PETROCHEMICAL
Hydrocarbons (High-Temperature), Sulfur Compounds
GC_PC1172
MidrangeCrudeonRxi®-5HT
Peaks
1. C17
2. Pristane
3. C18
4. Phytane
Column
Rxi
®
-5HT, 30m, 0.32mm ID, 0.10µm (cat.# 13909)
using retention gap 2m, 0.53mm ID,
Sample
Midrange crude
Conc.:
500µg/mL
Injection
Inj. Vol.:
1.0µL cold on-column
Oven
OvenTemp:
50 °C to 300 °C at 10 °C/min. (hold 10min.)
Carrier Gas
H
2
, constant flow
Linear Velocity:
40 cm/sec.
Detector
FID@ 330 °C
Instrument
Agilent/HP6890GC
Acknowledgement Sample courtesy of ExxonMobil Corporation
NEW!
Website :
E-mail :
TelNo : 03 9762 2034 . . . inAUSTRALIA
Mar 2011
