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Titel: Development of a gas chromatography system coupled to a metal-oxide semiconductor (MOS) sensor, with compensation of the temperature effects on the column for the measurement of ethene
VerfasserIn: Koehne, Maximilian
Schmidt, Christopher
Singh, Satnam
Grasskamp, Andreas
Sauerwald, Tilman
Zeh, Gina
Sprache: Englisch
Titel: Journal of sensors and sensor systems : JSSS
Bandnummer: 12
Heft: 2
Seiten: 215–223
Verlag/Plattform: Copernicus Publ.
Erscheinungsjahr: 2023
DDC-Sachgruppe: 500 Naturwissenschaften
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: A possible way to reduce the size and complexity of common gas chromatography (GC) systems is the economization of the column temperature regulation system. To this end, a temperature compensation method was developed and validated on a benchtop GC-PDD (pulsed discharge detector) with ethene. An in-house-developed algorithm correlates the retention index of a test gas to the retention index of a previously selected reference gas. To investigate further methods of cost reduction, commercial gas sensors were tested as cheap, sensitive, and versatile detectors. Therefore, CO2 was chosen as a naturally occurring reference gas, while ethene was chosen as a maturity marker for climacteric fruits and hence as a test gas. A demonstrator, consisting of a simple syringe injection system, a PLOT (porous layer open tubular) column boxed in a polystyrene-foam housing, a commercial MOS (metal-oxide semiconductor) sensor for the test gas, and a CO2-specific IR (infrared) sensor, was used to set up a simple GC system and to apply this method on test measurements. Sorption parameters for ethene and CO2 were determined via a van 't Hoff plot, where the entropy S was −11.982 J mol−1 K−1 and 1.351 J mol−1 K−1 , and the enthalpy H was −20.622 kJ mol−1 and −14.792 kJ mol−1 , respectively. Ethene (100 ppm) measurements revealed a system-specific correction term of 0.652 min. Further measurements of ethene and interfering gases revealed a mean retention time for ethene of 3.093 min; the mean predicted retention time is 3.099 min. The demonstrator was able to identify the test gas, ethene, as a function of the reference gas, CO2, in a first approach, without a column heating system and in a gas mixture by applying a temperature compensation algorithm and a system-specific holdup time correction term.
DOI der Erstveröffentlichung: 10.5194/jsss-12-215-2023
URL der Erstveröffentlichung: https://jsss.copernicus.org/articles/12/215/2023/
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-435178
hdl:20.500.11880/39006
http://dx.doi.org/10.22028/D291-43517
ISSN: 2194-878X
2194-8771
Datum des Eintrags: 20-Nov-2024
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Systems Engineering
Professur: NT - Keiner Professur zugeordnet
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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