This document describes a method for analyzing trace hydrocarbon impurities in propylene
This document details a method for analyzing trace hydrocarbon impurities in propylene using an Agilent 6820 gas chromatography system. The system is configured with a gas sampling valve, split/splitless inlet, and flame ionization detector (FID). An Agilent HP-AI,0; column is utilized for the separation of trace hydrocarbons.
The method demonstrates the ability to detect impurity levels as low as 1 ppm in propylene. It highlights the system's capability to acquire full dynamic range data, allowing for the simultaneous quantitation of large concentrations (near 100% propylene) and trace (low ppm) compounds in a single run without manual range changes.
| Column | PLOT Al,03 "M" 50 m x 0.63 mm x 0.25 ym |
|---|---|
| Oven Temperature Program | 40 °C for 2 min, 4 °C/min to 190 °C for 5 min |
| Detector Temperature | 300 °C |
| Hydrogen Flow | 36 mL/min |
| Air Flow | 350 mL/min |
| Makeup Gas Flow | 22 mL/min |
The method can easily detect impurity levels at 1 ppm.
An Agilent HP-AI,0; column is used for separation of the trace hydrocarbons.