648
GC CHROMATOGRAMS |
PETROLEUM & PETROCHEMICAL
Permanent Gases
Permanent Gases
Rt®-MSieve 5A
(PLOT)
Column:
Rt
®
-Msieve 5A, 30m, 0.53mm ID, 50µm
(cat.# 19723)
Sample:
0.5mL (sample loop injection)
Column temp.:
27°C
Carrier gas:
helium
Linear velocity:
34cm/sec.
Det.:
Valco
®
HID
1. hydrogen, 29.1 ppm
2. argon, 53.4 ppm
3. oxygen, 31.3 ppm
1
2
3
min. 1
2
3
Chromatogram courtesy of Larry McElmurry, Mobile Analytical Labs.
GC_PC00170
Permanent Gases
Rt®-Msieve 5A
(PLOT)
GC_PC00898
1. hydrogen
40ppm
2. argon
30ppm
3. oxygen
50ppm
4. nitrogen
50ppm
5. methane
40ppm
6. carbon monoxide 50ppm
Column:
Rt
®
-Msieve 5A, 30m, 0.53mm ID, 50µm (cat.# 19723)
Sample:
permanent gases (ppm)
Inj.:
5µL sample loop, 6-port Valco
®
valve, valve temp.: ambient
Inj. temp.:
200°C
Carrier gas:
helium, constant flow
Flow:
5mL/min.
Oven temp.:
27°C (hold 5 min.) to 100°C @ 10°C/min. (hold 5 min.)
Det.:
Valco
®
helium ionization detector @ 150°C
Argon
resolved
from oxygen.
Excellent
peak shape
for carbon
monoxide.
Peak List
1. helium
2. hydrogen
Column:
Rt
®
-Msieve 5A, 30m, 0.53mm ID, 50.0µm (cat.# 19723)
Sample:
helium/hydrogen gas mixture
Inj.:
25µL split (split ratio 1:10), 40mL/min. split vent flow rate
2mm split Precision
®
liner w/wool (cat.# 20823)
Inj. temp.:
200°C
Carrier gas:
nitrogen, constant pressure (7.0psi, 48.3kPa)
Linear velocity: 38cm/sec. @ 30°C
Oven temp.:
30°C
Det.:
TCD @ 200°C
Instrument:
Agilent 5890
Helium/Hydrogen
Rt®-Msieve 5A
(PLOT)
GC_MS01136
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Mar 2011
