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Concept study with experimental proof for a new type of detector for gas chromatography

Titelangaben

Wagner, Ricarda ; Schönauer-Kamin, Daniela ; Bäther, Wolfgang ; Moos, Ralf:
Concept study with experimental proof for a new type of detector for gas chromatography.
In: Sensors and Actuators B: Chemical. Bd. 346 (2021) . - 130490.
ISSN 0925-4005
DOI: https://doi.org/10.1016/j.snb.2021.130490

Abstract

Detectors are required to quantitatively detect various substances (analytes) in gas chromatography (GC). The detector signal caused by the substance to be detected after a separation column has to be timely integrated in order to draw conclusions about the analyte concentration. In this study, a concept for a detector is presented, where this integral can be determined directly, without mathematical integration. The detector is based on an impedimetric gas sensor. It is operated in the dosimeter-type mode for direct amount detection, rather than applying a classical concentration sensor and integrating the data mathematically. This concept is presented, discussed, and validated with cancerogenic epichlorohydrin serving as a model substance. Copper-exchanged zeolites have proven to be a well-suited functional material to detect epichlorohydrin with the new dosimeter-type concept. Copper-exchanged zeolite MFI 200 proved to be especially suitable. Further investigations have shown that even short gas pulses can be detected, similar as they would occur downstream of a GC column. Therefore, basically, the potential exists to develop a detector for gas chromatography, whereby the dosimeter-type gas sensor integrates intrinsically the concentration output downstream of a GC column.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien > Lehrstuhl Funktionsmaterialien - Univ.-Prof. Dr.-Ing. Ralf Moos
Profilfelder > Advanced Fields > Neue Materialien
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen > Bayreuther Materialzentrum - BayMAT
Fakultäten
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien
Profilfelder
Profilfelder > Advanced Fields
Forschungseinrichtungen
Forschungseinrichtungen > Zentrale wissenschaftliche Einrichtungen
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 22 Sep 2021 10:37
Letzte Änderung: 13 Jun 2024 11:33
URI: https://eref.uni-bayreuth.de/id/eprint/67082