Articles | Volume 9, issue 11
https://doi.org/10.5194/amt-9-5265-2016
https://doi.org/10.5194/amt-9-5265-2016
Research article
 | 
31 Oct 2016
Research article |  | 31 Oct 2016

A versatile, refrigerant- and cryogen-free cryofocusing–thermodesorption unit for preconcentration of traces gases in air

Florian Obersteiner, Harald Bönisch, Timo Keber, Simon O'Doherty, and Andreas Engel

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Short summary
The analysis of trace gases in ambient air requires a preconcentration technique, in many cases to make the species of interest detectable and quantifiable. In this paper, such a preconcentration set-up is presented. Target species are trapped on adsorptive material cooled by a Stirling cooler which allows for a very low adsorption temperature but only requires electrical power. A simple and lightweight mechanical design guarantees very good suitability for remote-site field operation.