Presentation Profile
Proposed ASTM Method for the Analysis of Water, Methanol and Ethyl Mercaptan in Liquid Petroleum Gas(LPG) by VUV LUMA GC Detection
Currently Scheduled: 10/15/2025 - 12:30 PM - 12:50 PM
Room: South Lobby
Main Author
Chris Goss - InnotechAlberta
- Lee Marotta - Perkin Elmer
Abstract:
Poster abstract submission for GCC consideration
Dissolved water in Liquefied Petroleum Gas (LPG) can cause freeze-up difficulties in pressure reducing systems, leading to safety, corrosion, and operational issues in LPG distribution systems. The current industry practice is to measure water content using the valve freeze test (ASTM D2713) however this is an indirect measurement, it requires venting of LPG which is a safety hazard and cannot be adapted to on-line analysis or process control. There has long been an industry requirement for alternative standard methods to quantitate water in LPG.
Using gas chromatographic (GC) separations and the deconvolution (spectral) power of the LUMA detector, allows determination, at trace levels, water, methanol and ethyl mercaptan. The LUMA provides quantitation and qualification information of components to ensure false positives are not being reported. The researchers next steps will be to investigate certain permanent gases, hydrocarbon composition and other corrosive gases.
