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

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

doi:https://doi.org/10.5194/amt-9-5265-2016

Articles | Volume 9, issue 11

https://doi.org/10.5194/amt-9-5265-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-9-5265-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 9, issue 11

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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Final revised paper (published on 31 Oct 2016)
Supplement to the final revised paper
Preprint (discussion started on 17 Jun 2016)
Supplement to the preprint

Interactive discussion

Status: closed

AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment

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- Supplement

RC1: 'Review F. Obersteiner', Anonymous Referee #1, 07 Jul 2016
RC2: 'Review of Obersteiner et al.', Benjamin Miller, 17 Jul 2016
RC3: 'Review of Obersteiner et al.', Anonymous Referee #3, 20 Jul 2016
AC1: 'Answers to Referee Comments', Florian Obersteiner, 08 Sep 2016

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.