This document describes the analysis of low-level sulfur compounds in natural gas and propylene using an Agilent 7890A GC system equipped with an OI 5380 pulsed flame photometric detector (PFPD). Reliable routine detection of sulfur components in light hydrocarbon matrices including C3 streams to 50 ppbv is demonstrated.
The document describes a method for analyzing trace sulfur components, such as hydrogen sulfide and carbonyl sulfide, in light hydrocarbon matrices like natural gas and propylene. The study utilizes an Agilent 7890A Gas Chromatograph equipped with an OI Analytical Model 5380 Pulsed Flame Photometric Detector (PFPD) to achieve reliable detection down to 50 ppbv.
The system can achieve reliable routine detection of sulfur components at levels under 50 ppbv.
The initial setup must use a 1-mL sample loop and a split ratio of 3 to 1.
Once tuned, the sensitivity can be up to 5x better than the FPD.