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GC COLUMNS | APPLICATION-SPECIFIC COLUMNS
Petroleum & Petrochemical
Detailed Hydrocarbons Analysis on Rtx®-DHA-100
Rtx®-5 DHA Tuning Column (fused silica)
(Crossbond® 5% diphenyl/95% dimethyl polysiloxane—optimized for hydrocarbon analysis)
Detailed Hydrocarbon Analysis (DHA) did you know?
Using hydrogen instead of helium can cut
analysis time in half! Visit
to learn more.
ASTM
Method
D6729
D6730
D6733
D5501
Dimensions
100 m x 0.25 mm, 0.50 µm
100 m x 0.25 mm,
0.50 µmw/ precolumn
50 m x 0.20 mm, 0.50 µm
150 m x 0.25 mm, 1.0 µm
Column
Rtx-DHA-100
Rtx-DHA-100 &
Rtx-5 DHA
Tuning Column
Rtx-DHA-50
Rtx-DHA-150
cat. #
10148
10148
&
10165
10147
10149
Method Recommended
10 20 30 40 50 60 70 80 90 100
Time (min)
1
2
3
4
5
6
7
8
9
11
10
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
29 30
GC_PC00743
Column Rtx®-DHA-100, 100 m, 0.25 mm ID, 0.50 µm (cat.# 10148)
using Rtx®-5 DHA tuning column, 2.62 m, 0.25 mm ID, 1.0 μm (cat.# 10165)
Sample Custom detailed hydrocarbons analysis (DHA) mix
Conc.: Neat
Injection
Inj. Vol.: 0.01 µL split (split ratio 150:1)
Liner: Cup splitter with Siltek® deactivation (cat.# 20709-214.1)
Inj. Temp.: 200 °C
Oven
Oven Temp.: 5 °C (hold 15 min) to 50 °C at 5 °C/min (hold 50 min) to 200 °C at 8 °C/min
(hold 10 min)
Carrier Gas He, constant flow
Flow Rate: 2.3 mL/min
Linear Velocity: 28 cm/sec
Detector FID@ 250 °C
Peaks
1. Ethanol
2. C5
3. tert-Butanol
4. 2-Methylbutene-2
5. 2,3-Dimethylbutane
6. Methyl tert-butyl ether (MTBE)
7. C6
8. 1-Methylcyclopentene
9. Benzene
10. Cyclohexane
11. 3-Ethylpentane
12. 1-tert-2-Dimethylcyclopentane
13. C7
14. 2,2,3-Trimethylpentane
15. 2,3,3-Trimethylpentane
16. Toluene
17. C8
18. Ethylbenzene
19. p -Xylene
20. 2,3-Dimethylheptane
21. C9
22. 5-Methylnonane
23. 1,2-Methylethylbenzene
24. C10
25. C11 (undecane)
26. 1,2,3,5-Tetramethylbenzene
27. Naphthalene
28. C12 (dodecane)
29. 1-Methylnaphthalene
30. C13 (tridecane)
Resolve all critical pairs—including
2,3,3-trimethylpentane and toluene!
free literature
Detailed Hydrocarbon Analysis
Featuring Rtx®-DHA Columns
Download your
free copy from
lit. cat.#
PCFL1007B-UNV
Rtx®-DHA Columns (fused silica)
(Crossbond® 100% dimethyl polysiloxane—optimized for hydrocarbon analysis)
• Columns meet or exceed all ASTM D6730-01 and CAN/CGSB 3.0 No. 14.3-99
method guidelines; test report for method D6730 supplied with each column.
• Excellent responses and peak symmetry for polar oxygenates.
• Stable to 340 °C.
Gasolines are complex mixtures of hundreds of compounds. Information about con-
centrations of the individual components is important for evaluating raw materials
and for controlling refinery processes. ASTM D6730-01 outlines a high-resolution GC
method for detailed hydrocarbon analysis (DHA) of gasolines. Rtx®-DHA columns
are ideal for DHA methods and easily meet or exceed both ASTM D6730-01 and Ca-
nadian General Standards Board CAN/CGSB 3.0 No. 14.3-99 requirements. Every
Rtx®-DHA column is tested for retention, efficiency, stationary phase selectivity, and
bleed—guaranteeing reproducible column-to-column performance.
similar phases
HP-PONA, DB-Petro, CP-Sil PONA C8,
Petrocol DH
50-Meter 100-Meter 150-Meter
ID df temp. limits cat.# price cat.# price cat.# price
0.20 mm 0.50 µm -60 to 300/340 °C 10147
0.25 mm 0.50 µm -60 to 300/340 °C 10148
1.00 µm -60 to 280/340 °C 10149
5-Meter
ID df temp. limits cat.# price
0.25 mm 1.00 µm -60 to 325/350 °C 10165