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High-impact GC-MS analysis with thermal desorption
Experience Thermal Desorption (TD), the fastest route from trace-level samples to confident GC-MS results. For exceptional sensitivity for VOC and SVOC analysis across air monitoring, emissions testing, and materials characterization workflows, TD eliminates solvents and maximizes analyte recovery.
Reduce contamination risk and accelerate time to results
Capture more information from every sample and simplify preparation with Markes TD systems, which seamlessly handle sorbent tubes, canisters, and on-line air samples. For reliable, high-throughput analysis, whether in routine monitoring or advanced research environments, TD becomes a powerful front end when coupled with Thermo Scientific GC and GC-MS systems.
Benefits: speed, flexibility, and resilience
Choose the carrier gas that best fits your performance, cost, and sustainability goals—without changing your established TD-GC-MS workflows. For flexibility and improved performance, Markes Multi-Gas TD systems are certified for operation with hydrogen, helium, or nitrogen.
Faster results, higher throughput
Process more samples per day with hydrogen carrier gas, which enables shorter GC run times.
Reduced operating costs
Minimize dependence on helium and associated supply constraints while maintaining analytical performance.
Maximum uptime and flexibility
Ensure continuity of operations, even during carrier gas shortages, with multi-gas capability.
Future-ready and sustainable
Prepare your lab for evolving regulatory and supply landscapes with Hydrogen, which supports long-term sustainability initiatives.
Proven performance
Reduce analysis time for hydrogen by ~60%, while preserving chromatographic quality and quantitative reliability in TD-GC-MS air toxics applications.
Which TD-GC-MS workflow is right for you?
Tube-based automation (air toxics, materials emissions, clinical research)
TD100-xr Multi-Gas (up to 100 tubes)
High-throughput automated processing of sorbent tubes—ideal for busy labs standardizing VOC/SVOC methods
UNITY-xr Multi-Gas (expandable platform)
A scalable “starter-to-advanced” TD platform that supports tube desorption with upgrade paths to canister/on-line automation.
Extended capability for complex matrices and wet samples
Kori-xr (water management)
Water management options (including Kori-xr) support humid air sampling and preserve analyte range across challenging matrices.
On-line / canister workflows (ambient air networks, fence line, mobile labs)
Markes TD workflows support tubes, canisters/bags, and on-line sampling—enabling unattended monitoring or lab-based sample processing, depending on your deployment.
Material emission (VOC, SVOC and PFAS)
Micro-chamber/Thermal extractor
Large dynamic headspace is used to assess emissions from solid materials, i.e. consumer products, electronics, cosmetics, and textiles.
Applications
For highly sensitive and robust high-throughput solutions for VOC and SVOC analysis in many different matrices, across environmental, industrial, and life science workflows, coupld Markes Multi-Gas TD instruments to Thermo Scientific TRACE 1300/1600 Series GC and GC-MS systems.
The full integration into the Thermo Scientific Chromeleon CDS ensures streamlined end-to-end workflows facilitating method set-up and data analysis.
Environmental air monitoring
- Air toxics: EPA TO-15 / TO-17
- Fence line monitoring: EPA Method 325
- Ozone precursors: PAMS programs (hourly/continuous style sampling)
Environmental air monitoring educational resources
PFAS in air and stack emissions
- TD-GC-MS/MS enables selective and sensitive measurement of volatile/neutral/ionic PFAS species in air at pg/m³-level detection
- Untargeted PFAS screening with TD- Orbitrap GC-HRAM
- EPA OTM-50
- ASTM D8591-24
- Indoor Air
- Material emissions
PFAS in air and stack emissions educational resources
Material safety
- Vehicle interior air quality (VIAQ) (VDA 278)
- Construction product emissions (EN 16516)
- Green Hydrogen
Material safety educational resources
Thermal Desorption (TD) FAQs
Thermal desorption is a solvent-free, high-sensitivity sample introduction technique for GC and GC-MS that preconcentrates trace VOCs and SVOCs from sorbent tubes, canisters/bags, and on-line streams—ideal for air monitoring and emissions testing workflows.
After trapping analytes on a focusing trap, TD rapidly transfers them to the GC for separation and MS detection—delivering strong concentration by a factor up to 10E6, high sensitivity, and cleaner workflows for trace VOC/SVOC analysis.
Yes. Markes Multi-Gas TD systems are independently certified to operate with hydrogen (as well as helium or nitrogen), and hydrogen can also reduce run times significantly while maintaining analytical performance when configured correctly with the appropriate GC safety hardware.
Markes Multi-Gas TD instruments are compatible with TRACE 1300/1600 Series GC and all Thermo Scientific GC-MS, including HRAM Orbitrap GC-MS.
For streamlined end-to-end workflows facilitating method set-up and data analysis, Thermo Scientific Chromeleon CDS controls Markes TD systems starting from version 7.3.1.
Our general purpose product lines are not intended for in vitro diagnostic purposes in accordance with our product documentation, manuals, and labels. They are designated for General Laboratory Use Only.
Our general purpose product lines have not been tested or validated for such applications and their use for in vitro diagnostic purposes may result in health and safety risks.
For General Lab Use Only - Not For Diagnostic Procedures.