Product information · EnglisheTrap and eTrap Plus: product brochure
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Gas chromatography
eTrap cold trap for GC systems
Chromtech
The Chromtech eTrap focuses highly volatile compounds electrically and without cryogenic cooling media. eTrap and eTrap Plus support splitless headspace, SPDE, SPME, thermodesorption and purge-and-trap applications.
- Manufacturer
- Chromtech
- Product range
- Gas chromatography
- Advice
- Direct from Chromtech
Electric cold trap
Focus highly volatile compounds.
The Chromtech eTrap focuses analytes in a deactivated 1/16-inch stainless steel capillary. For very volatile connections, the capillary is filled with Tenax TA 60/80 as standard. Rapid resistive heating desorbs the enriched substances and supports narrow peak shapes as well as a higher detection sensitivity.
- Two-stage electrically operated Peltier cold trap
- No liquid nitrogen and no liquid carbon dioxide required
- eTrap standard: about 20 K below ambient temperature to 320 °C
- eTrap Plus with IceStar: about 50 K below ambient temperature to 320 °C
- Mounted outside the furnace and thus only slightly influenced by high furnace temperatures
- Other adsorbents on request
Terms: VOC refers to highly volatile organic compounds. SPME means solid phase microextraction, SPDE solid phase dynamic extraction. Purge and trap is an enrichment process in which volatile substances are expelled from the sample and collected on a trap.
In practice
eTrap Plus for water analysis.
Yassin Hardi reports on an eTrap Plus installation on an Agilent GC/MS system with CTC PAL RSI for the determination of highly volatile organic compounds (VOCs) in water samples. According to the report, this is already the third eTrap in the laboratory in question.
The controller is integrated into Agilent MassHunter and thus part of the respective GC/MS measurement method. The example shows the combination of automated sample application, enrichment and method-controlled operation for routine analysis.
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In practice
Focus very volatile substances in a targeted manner.
Another installation report by Yassin Hardi shows eTrap Plus for headspace GC/MS analysis of water samples. Electrical Peltier cooling and splitless sample application with PAL RSI support the focusing of very volatile compounds, for example vinyl chloride.
The cold trap is located outside the GC oven. In the system described, its control parameters are integrated into Agilent MassHunter and are guided together with the respective GC/MS method.
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In practice
eTrap Plus in aromaanalysis.
Yassin Hardi reports on a customer-specific system in the research and development laboratory of a flavour manufacturer. Two Agilent 7890 GCs are connected via an eTrap Plus: Selected fractions of the first separating column are focused in the cold trap and transferred to the second column by rapid heating.
The additional separation helps to examine previously not sufficiently separated compounds in more detail. Subsequently, the column flow is divided into an Agilent 5977B mass spectrometer and the PHASER-Pro smell sport. In this way, the system combines instrumental analysis with human odour perception.
The transfer of selected column fractions is referred to as a heart-cut.
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Advice and integration
For the appropriate system configuration.
Whether this product fits your application depends on the sample, method and existing device environment. We clarify the requirements, coordinate the configuration and accompany the integration into your laboratory process.
Appropriate applications
Documents
Product documents
Product information · EnglishVOC Chromatogram with Headspace and eTrap
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