This application describes the improved performance for the analysis of aromatics in gasoline by ASTM Method D5769 using the Agilent 5973 inert gas chromatography/mass spectrometry (GC/MS) system.
The document details the use of the Agilent 5973 inert gas chromatography/mass spectrometry system to measure high concentrations of aromatic compounds in gasoline according to ASTM Method D5769. It highlights that the optional extended linearity ion source kit provides improved linear calibrations, making the method easier and faster to set up with more reliable results compared to standard high-sensitivity sources.
| Carrier gas | Helium |
|---|---|
| Inlet temperature | 250 °C |
| Oven temperature program | 60 °C (0 min) to 250 °C (0 min) |
| Split ratio | 250:1 |
| Electron energy | 70 eV |
| Scan range | 45 to 300 Daltons |
| Analysis range | 0.1 to 42 weight percent |
The document uses American Society of Testing and Materials Method D5769.
Yes, it provides greater linear dynamic range, resulting in a coefficient of determination (r²) of 0.997 for toluene compared to 0.911 for the standard source.