LCGC UST
Press Release|Articles|June 17, 2025

Automated sorptive extraction now available on multi-technique GC–MS platform

The Centri® 90 system offers a powerful combination of sample preparation techniques for VOC and SVOC analysis, now including fully automated high-capacity sorptive extraction. Alongside headspace and SPME, this addition enhances the platform’s flexibility for trace-level GC–MS workflows. With cryogen-free operation and integrated preconcentration, Centri 90 streamlines the analysis of solids and liquids across diverse application areas, from environmental monitoring to food and fragrance.


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Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.