ASTM D7994 - 17 describes the determination of fluorine, chlorine, and sulfur in liquefied petroleum gas (LPG) by oxidative pyrohydrolytic combustion followed by ion chromatography. A synthetic butane sample is analyzed. 50 µL of the sample is injected into the combustion system using the LPG Module. The combustion products are analyzed by IC applying intelligent Partial Loop Injection Technique after Inline Matrix Elimination.