This application note describes a method for using an Agilent 6890 gas chromatograph to determine trace (low ppm) levels of hydrocarbon impurities in high-purity ethylene and propylene.
The document details a method to determine low ppm levels of hydrocarbon impurities in high-purity ethylene and propylene. It utilizes an Agilent 6890 Series gas chromatography system equipped with a heated gas sample valve, split/splitless inlet, and flame ionization detector (FID). The separation is achieved using an HP-PLOT Al2O3 column.
Impurity levels below 10 ppm (mole) were easily detected in both ethylene and propylene.
The sample was analyzed at a split ratio of 20/1.