ANALYSIS OF LPG AND PROPANE CONCENTRATES BY GC: D2163
EXPLANATION
The component distribution of liquefied petroleum gases (LPG) and propane concentrates is often required as a specification analysis for end-use sale of these materials. Precise compositional data are required to assure uniform quality of the desired reaction products. These data can also be used to calculate physical properties such as relative density, vapor pressure, and motor octane. This test method provides such analyses, and is applicable to analysis of propane, propene, and butane in all concentration ranges from 0.1 % and above.
TEST SUMMARY
Components in a sample of LPG are physically separated using gas chromatograph and compared to corresponding components separated under identical operating conditions from a reference standard mixture of known composition or from use of pure hydrocarbons. The chromatogram of the sample is interpreted by comparing peak heights or areas with those obtained on the reference standard mixture of pure hydrocarbons.
TEST PRECISION
No statement of bias can be made since no accepted reference material suitable for this analysis is available.
