Presentation Profile
Dynamic Focusing: A New New Valve-Less, Cryogen Free Technique for Introduction of VVOC's to SVOC's in TD-GC-MS
Currently Scheduled: 10/16/2024 - 10:00 AM
Room: South Lobby
Main Author
Kurt Thaxton - GERSTEL GmbH
- Andreas Hoffmann - GERSTEL GmbH
- Leonhard Nuenemann - GERSTEL GmbH
- Maikel Haferkamp - GERSTEL GmbH
- Jackie Whitecavage - GERSTEL Inc.
Abstract:
Dynamic focusing, a new technique to focus very volatile compounds at the head of the GC column at the moment of injection, is successful for species as light as propylene and produces compliant results for air analysis methods such as TO-17, ISO 16000-6, and recently developed methods for the determination of PFAS compounds in air.
The design is simple to understand and troubleshoot, and it achieves superior analytical results while not requiring the use of cryogens or valves in the sample pathway. Valves in-line can cause carryover or loss of analytes, and they can introduce / remove PFAS compounds if they have seals or components made of PTFE and related polymers. Valves are also very expensive to service and replacement can mean weeks of downtime.
Dynamic focusing does not use in-line valves, so the end result is an instrument that is easier to maintain and has greatly reduced operating costs.
