Automated Dynamic Headspace (DHS)
The DHS option efficiently extracts and concentrates VOCs from liquid or solid samples.Request a quote
Automated Dynamic Headspace DHS is available for the GERSTEL MultiPurpose Sampler MPS. The DHS station efficiently extracts and concentrates VOCs from liquid or solid samples placed in standard Headspace vials (DHS) or in larger sample containers up to 1 L volume (DHSLarge). The sample is thermostated and agitated while the headspace is purged with a controlled flow of inert gas, providing controlled and efficient extraction conditions. Sample temperatures can be selected from 10 °C to 200 °C. Lowering the temperature provides a means of reducing the amount of water vapor released and ultimately re-trapped. The DHS station additionally holds a replaceable adsorbent- or sorbent filled tube used for analyte concentration. The temperature of the adsorbent tube during the DHS process can be varied from 20 °C to 70 °C for optimal trapping of the analytes in question. Adsorbent tubes used are standard GERSTEL Thermal Desorption Unit TDU tubes when using the standard DHS option (right) or 3.5″ tubes when using DHS 3.5+ (left) combined with the GERSTEL TD 3.5+ thermal desorber. Following analyte concentration, the tube is automatically transferred to the TDU or TD 3.5+ for Thermal Desorption and analyte transfer to the GC. Tubes are fitted with individual adapters enabling both automated movement and leak-free sealing during the Dynamic Headspace and Thermal Desorption steps and during storage in the autosampler tray.
Automated Dynamic Headspace combined with sample introduction to a GC or GC/MS system is performed by the MPS and TDU or TD3.5+.
- The GERSTEL Dynamic Headspace provides lower detection limits than static headspace, SPME and other widely used techniques
- High productivity through high throughput design and complete automation from sample preparation to GC/MS-analysis
- Highest flexibility: User defined extraction time, flow, temperature and adsorbent
- The Dynamic Headspace technology provides multiple water management options to ensure best chromatography and MS stability
Related application notes
AS184: Sniffing Out Parkinson Disease Using GERSTEL Dynamic Headspace (DHS) and Olfactory Detection Port (ODP)
AS229: Automated Thermal Desorption Tube Spiking of Volatile Organic Compounds (VOCS) Using GERSTEL Dynamic Headspace Sampler
AS180: Comparison of Extraction Techniques for Volatiles in a Selection of Spirits and Liqueurs
AS106: Dynamic Headspace (DHS) Analysis Using Full Evaporation Technique (FET) to Quantify Trace Level Analytes Present in a Herbal Based Liquor
AS201: Automated Solution for Spiking Thermal Desorption Tubes Using GERSTEL Tube Spiking System and TD3.5+
AS162: Comparison of Different Sample Introduction Techniques for the Analysis and Characterisation of e-Liquids Using GC-MS
Comparison of Extraction Techniques for Volatiles in a Selection of Tea Samples
Benefits of Using Sample Enrichment Techniques (Headspace SPME, Twister SBSE and Dynamic Headspace) to Determine Trace Level Analytes Present in a Herbal Based Liquor
Off-gassing of Rubber Particles Used for Athletic Fields Using Automated Dynamic Headspace Sampling
Using Dynamic Headspace and Principal Component Analysis to Find Key Differences Between Chocolate Samples
Comparison of Extraction Techniques for Volatiles in Whisky
The Development of the MVM (Multi-Volatile Method) in the Whisky Matrix
Automating DNPH Derivatisation for Aldehyde and Ketone Analysis
Automated Liner EXchange (ALEX)
The GERSTEL Automated Liner EXchange ALEX technology automates the task of replacing liners in the GERSTEL Cooled Injection System CIS.
A powerful centrifuge for the GERSTEL MultiPurposeSampler (MPS robotic). Centrifugation of up to 6 samples at up to 4500 rpm/ 2000 g.