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Permanent Gases on Rt-Msieve 5A (15 m x 0.53 mm x 50 μm)
|Peaks||tR (min)||Conc. (Mol%)|
|Column||Rt-Msieve 5A, 15 m, 0.53 mm ID, 50 µm (cat.# 19721)|
|Sample||Permanent gases (custom mix)|
|Inj. Vol.:||30 µL split (split ratio 10:1)|
|Liner:||Topaz 2.0 mm ID straight inlet liner (cat.# 23313)|
|Inj. Temp.:||150 °C|
|Oven Temp.:||30 °C (hold 10 min)|
|Carrier Gas||H2, constant pressure (1.7 psi, 11.7 kPa)|
|Detector||TCD @ 200 °C|
|Instrument||Agilent 7890B GC|
|Notes||Resolution (Ar/O2) = 1.4 |
Asymmetry (CO) = 1.1
Note that the sample was introduced onto the column using syringe injection and a high split ratio, which results in a very narrow sample band. Any dead volume in the system (e.g., from using a sampling valve, large sampling loops, or even from using splitless injection) will result in peak broadening, which might decrease resolution between the peaks or even result in peak coelution.
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