This application note is targeted for ultra-high productivity of total petroleum hydro- carbons (TPH) analysis in environmental laboratories. Agilent's Low Thermal Mass (LTM) technology is employed here to perform ultra-fast gas chromatographic (GC) separations. The LTM technology uses a column module combining a fused silica cap- illary column with heating and temperature-sensing components wound around it, which can be heated and cooled very efficiently. In this application note, the speed of analysis for the hydrocarbon group eluting between C10 and C44 can be dramatically increased to about 13 times faster than a conventional method. In addition, the ultra- fast cooling function of an LTM module can reduce the total GC cycle time to 5.1 minutes. The simultaneous dual-tower injection from Agilent is used to further double productivity. The final result for TPH analysis productivity is 5.1 minutes per two samples.
The document details a method for analyzing total petroleum hydrocarbons (TPH) in environmental laboratories with high speed. It utilizes the Agilent Low Thermal Mass (LTM) system, which employs a specialized column module to heat and cool efficiently, reducing cycle times significantly compared to conventional air bath ovens.
Additionally, the note covers the use of simultaneous dual-tower injection on the Agilent 7890A Gas Chromatograph. This configuration allows for two complete analyses per run using identical channels, effectively doubling lab productivity when combined with the speed gains from LTM technology.
| Compatible Model | Agilent 6890 GC |
|---|---|
| LTM System Part Number | G6579A |
| Column Module Length (Standard) | 5 meters |
| Minimum Cycle Time (LTM Method) | 5.1 minutes |
ChemStation (32-bit version B.04.01) is used for method translation, data generation, and integration.
Yes, a version of the LTM system is also available for the Agilent 6890 GC.