80 www.restek.com
Petroleum oxygenates on an Rt®-TCEP column.
similar
phases
SPB-TCEP, CP-TCEP
1
2
3
4
5
6
7
8
9
Column:
Rt
®
-TCEP, 60m, 0.25mm ID, 0.4µm (cat.# 10999)
Inj.:
1.0µL split injection, components @ 500ppm.
Oven temp.:
60°C (hold 5 min.) to 100°C @ 5°C/min. (hold 10 min.)
Inj./det. temp.: 200°C
Carrier gas:
helium
Linear velocity: 30cm/sec. set @ 80°C
FID sensitivity:
6.4 x 10
-11
AFS
Split flow:
46mL/min.
1. methyl
tert
-butyl ether
2.
n
-undecane
3.
tert
-butanol
4. methanol
5. isopropyl alcohol
6. ethanol
7.
n
-dodecane
8.
n
-tridecane
9.
n
-butanol
GC_PC00195
min. 2
4
6
8
10
12
14
16
Rt®-TCEP Columns
(fused silica)
(highly polar phase; 1,2,3-tris[2-cyanoethoxy]propane—not bonded)
• General purpose columns, ideal for aromatics and oxygenates in gasoline.
• Temperature range: 0 °C to 135 °C.
Most gasolines contain aliphatic hydrocarbons up to
n
-dodecane (C12). To improv
identification of the aromatics and oxygenates, it is desirable to elute benzene after C1
and toluene after C12. The extremely polar Rt®-TCEP stationary phase provides
retention index for benzene greater than 1100 and permits the separation of alcohol
and aromatics from the aliphatic constituents in gasoline.
Rt®-TCEP columns have the same high polarity as TCEP packed columns (precolumn
in ASTM Method D4815 for the analysis of petroleum oxygenates), with the efficienc
of a capillary column. The result is a column that can separate a wide variety of com
pounds with an elution pattern unattainable using other high polarity siloxanes.
The Rt®-TCEP column incorporates a nonbonded stationary phase coated on a surfac
specialized for enhanced polymer stability and extended column lifetime. Solvent rins
ing should be avoided. Conditioning is necessary only if the column is to be used a
temperatures near the maximum operating temperature.
Solutions For Your Petroleum & Petrochemical Analyses
Visit us at
www.restek.com/petro
Improved best-in-class GC columns • Standards • Industry experts at your service.
ID
df
temp. limits
30-Meter
60-Meter
0.25mm 0.40µm 0 to 135°C
10998
10999
Website : www.chromtech.net.au E-mail : info@chromtech.net.au TelNo : 03 9762 2034 . . . in AUSTRALIA Mar