PAL ITEX DHS Traps - Various trap materials available

ITEX Trap Selection Guide

Tenax TA: Volatile and semivolatile compounds, temperature limit of 350 °C

Carbopack: Hydrophobic properties minimized sample displacement by water

Carbosieve/Carboxen: For very volatile compounds, e.g. Vinylchloride, Freon compounds

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Quantitation of volatile organic compounds in drinking water using ITEX

Application Notes

Quantitation of volatile organic compounds in drinking water using ITEX

Demonstration of a routine analytical method for the quantitation of volatile organic compounds in drinking water, using the
TriPlus RSH ITEX system along with a Thermo Scientific™ ISQ™ 7000 MS system coupled with a Thermo Scientific™ TRACE™
1310 Gas Chromatograph (GC) and Thermo Scientific™ Chromeleon™ Chromatography Data System (CDS). Method linearity
and detection limits were assessed to evaluate method performance.

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ITEX Dynamic Headspace Application Notes

ITEX DHS Application Notes for Environmental, Chemical and Food Safety analysis

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A Comparison of ITEX Dynamic Headspace–GC/MS to other Enrichment Techniques for Analysis of Flavoring Compounds

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A Comparison of ITEX Dynamic Headspace–GC/MS to other Enrichment Techniques for Analysis of Flavoring Compounds

The automated ITEX Dynamic Headspace unit demonstrated equivalent accuracy and precision when compared to purge and trap and overall was more sensitive than the other enrichment techniques. The ITEX unit allows for automated analysis and optimization of conditions which drastically reduces analyst’s time when compared to performing the experiments manually with the purge and trap without any reduction in sensitivity, accuracy and reproducibility.

Analysis of volatile compounds from honeys to differentiate plant and geographical origins

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Analysis of volatile compounds from honeys to differentiate plant and geographical origins

The analysis of volatile organic compounds (VOCs) is a faster approach to identify the honey’s origin than traditional methods, which is important for the quality control of honeys. In-tube extraction dynamic headspace (ITEX-DHS) is a fully automated microextraction technique, in which the enrichment of analytes takes place by repeated aspiring and dispensing of the sample headspace through a sorbent trap

Analysis of flavors, pesticides, and biomarkers directly from complex food matrix using the automated Vacuum In-Tube Extraction (V-ITEX)

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Analysis of flavors, pesticides, and biomarkers directly from complex food matrix using the automated Vacuum In-Tube Extraction (V-ITEX)

Extraction of volatile compounds is a widely used approach for analysis of foods and beverages. By the nature of gas phase sampling, the limiting factor for polar analytes are given by low vapor pressure or higher boiling points of semi-volatile compounds. These limitations can be overcome by sampling at decreased pressure levels using vacuum conditions. This has been shown in several publications using vacuum sampling techniques. In this study, a fully automated approach of Vacuum In-Tube Extraction (V-ITEX) is presented, a simple and fully automated technique using PAL system autosamplers. The application examples include flavors, fragrances, off-flavors, pesticides and biomarkers by extractions directly from the food sample matrix, such as Honey, Bee Wax, Cheese, Onions, Blood and Urine.

Presented by:

Pascal Fuchsmann, Head of Flavor Analytics Agroscope

Stefan Cretnik, Product Manager CTC Analytics AG

ITEX Trap Selection Guide

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