Analysis of Propane, Propylene, Iso-Butane, n-Butane, t-2-Butene, Iso-Butylene, 1-Butene, c-2-Butene and 1,3-Butadiene by FID

APPLICATION # 180

The Analysis

In a simultaneous injection into a boiling point distribution column, the C5-C12 components are separated and analyzed. Propane, propylene, isobutane, n-butane, t-2-butane, isobutylene, 1-butene, c-2-butene, and 1,3-butadiene by flame ionization detection. The stored chromatogram is used to calculate a simulated distillation result, D-2887 type calculation.

How It Works

The GC is configured to accept the sample from a pressurized liquid sample container. The liquid sampling valve loads the sample. At the moment of injection, one single injection loads the sample simultaneously into two column systems, a and b:

1. The components enter a megabore column. Hydrocarbons up to C6 elute completely in about 1 minute and enter a plot column, where they are separated by FID detector A.

2. The components enter a megabore column capable of separating hydrocarbons by boiling point C4-C15. These components are detected by FID detector B.

The signal of detector B is used to integrate the signal at constant peak width so that the signal can be used for Simulated Distillation.

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