Isoparaffins on Rtx-DHA-100 (ASTM D6729-14)

PeakstR (min)Conc.
(wt.%)
1.Isopentane14.3051.599
2.2,3-Dimethylbutane27.0912.352
3.2-Methylpentane28.1606.377
4.3-Methylpentane30.76410.517
5.2,2-Dimethylpentane39.2792.438
6.2,4-Dimethylpentane40.7925.931
7.2,2,3-Trimethylbutane41.2990.660
8.3,3-Dimethylpentane45.7002.305
9.2-Methylhexane49.1574.689
10.2,3-Dimethylpentane49.1574.689
11.3-Methylhexane50.9632.374
12.3-Ethylpentane53.1350.882
13.2,2-Dimethylhexane61.2660.786
14.2,2,3-Trimethylpentane63.3103.673
15.2,5-Dimethylhexane63.6025.854
16.2,4-Dimethylhexane63.9211.454
17.2-Methylheptane70.6724.731
18.4-Methylheptane70.9171.508
19.3-Methylheptane72.0165.909
20.3-Ethylhexane72.1620.307
21.2,5-Dimethylheptane82.2173.860
22.3,5-Dimethylheptane82.4142.344
23.3,3-Dimethylheptane82.4141.765
24.2,3-Dimethylheptane85.0521.160
25.3,4-Dimethylheptane85.4130.839
26.2-Methyloctane86.2591.289
27.3-Methyloctane87.1476.995
28.3,3-Diethylpentane87.3941.914
29.2,2-Dimethyloctane92.9162.098
30.3,3-Dimethyloctane94.9440.804
31.2-Methylnonane98.1041.582
32.3-Ethyloctane98.4771.068
33.3-Methylnonane98.8235.272
image
GC_PC1322
ColumnRtx-DHA-100, 100 m, 0.25 mm ID, 0.50 µm (cat.# 10148)
SampleDHA isoparaffins standard (cat.# 30726)
Injection
Inj. Vol.:0.2 µL split (split ratio 200:1)
Liner:Topaz 4.0 mm ID Precision inlet liner w/wool (cat.# 23305)
Inj. Temp.:250 °C
Oven
Oven Temp.:0 °C (hold 15 min) to 50 °C at 1 °C/min to 130 °C at 2 °C/min to 270 °C at 4 °C/min
Carrier GasHe, constant pressure
Linear Velocity:24 cm/sec @ 35 °C
DetectorFID @ 300 °C
Make-up Gas Flow Rate:30 mL/min
Make-up Gas Type:N2
Hydrogen flow:40 mL/min
Air flow:370 mL/min
InstrumentAgilent 7890A GC
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