A breath of fresh air - When home and office make you suffer...

Thermal extraction using the GERSTEL TE: an efficient alternative to environmental chamber testing

Practical examples from the Textiles & Flooring Institute (TFI)

Optimization of carpet tiles I:
A carpet tile was taken from a production facility for accelerated VOC/SVOC emission testing. The result: Large compound peaks were found in the retention time range from 10 – 14 min. To determine the source(s) of the emissions, all raw products used in the production of the carpet tile were individually tested for emissions using thermal extraction. The TFI quickly identified the source and was able to propose a clear strategy for optimizing the carpet tile production to ensure lower material emissions.

Optimization of carpet tiles II:
Thermal Desorption GC/MS chromatogram of analytes extracted from a carpet tile sample using thermal extraction. Major compound peaks were found in the retention time range from 8 – 14 min (upper chromatogram). The source of the emissions was identified and substituted. The change was successful as can be seen in the lower chromatogram, showing the emission test of the optimized product.

Useful tool and great complement:
Comparison of emission tests performed after three days in an environmental test chamber(above) and accelerated emission testing using thermal extraction (below). Good correlation is seen between the peak patterns in the two chromatograms, both obtained by Thermal Desorption-GC/MS. Thermal extraction results
in a more efficient recovery of higher boiling compounds as can be seen. Thermal Extraction is an efficient tool for evaluating intermediate or final products either in the product development stage; for trouble shooting following customer complaints; or for production control.