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GC COLUMNS | APPLICATION-SPECIFIC COLUMNS
Petroleum & Petrochemical
Petroleum Oxygenates on Rt®-TCEP
Aromatics & Oxygenates in Gasoline Analysis
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GC_PC00195
Column Rt®-TCEP, 60 m, 0.25 mm ID, 0.40 µm (cat.# 10999)
Sample
Conc.: 500 ppm
Injection
Inj. Vol.: 1.0 µL split
Inj. Temp.: 200 °C
Split Vent
Flow Rate: 46 mL/min
Oven
Oven Temp.: 60 °C (hold 5 min) to 100 °C at 5 °C/min (hold 10 min)
Carrier Gas He, constant pressure
Linear Velocity: 30 cm/sec @ 80 °C
Detector FID@ 200 °C
Notes FID sensitivity: 6.4 x 10 -11AFS
Peaks
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
free literature
Analyzing Oxygenates in
Gasoline Using TCEP and
Rtx®-1/MXT®-1 Columns
Download your
free copy from
lit. cat.# 59587A
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 improve
identification of the aromatics and oxygenates, it is desirable to elute benzene after
C11 and toluene after C12. The extremely polar Rt®-TCEP stationary phase provides a
retention index for benzene greater than 1,100 and permits the separation of alcohols
and aromatics from the aliphatic constituents in gasoline.
Rt®-TCEP columns have the same high polarity as TCEP packed columns (precolumns
in ASTMMethod D4815 for the analysis of petroleum oxygenates), with the efficiency
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 surface
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 at
temperatures near the maximum operating temperature.
similar phases
SPB-TCEP, CP-TCEP
30-Meter 60-Meter
ID df temp. limits cat.# price cat.# price
0.25 mm 0.40 µm 0 to 135 °C 10998 10999