Overview on solid-state dosimeter-type gas sensors

Titelangaben

Groß, Andrea ; Marr, Isabella ; Moos, Ralf:
Overview on solid-state dosimeter-type gas sensors.
2013
Veranstaltung: Sensor 2013 , 14.-16.May 2013 , Nürnberg, Deutschland.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung , Ohne Angabe )
DOI: https://doi.org/10.5162/sensor2013/E6.3

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Abstract

Based on irreversible analyte accumulation in the sensitive layer, dosimeter-type gas sensors are promising for the long-term monitoring of low levels of analytes. Thereby, the analyte dose can be detected either during progressive analyte sorption or release with a direct correlation between the sensor response and the cumulated analyte amount. A short overview on various solid-state resistive dosimeter-type sensors for several gaseous analytes is given in order to demonstrate the potential of this cumulative sensing principle. The focus is on a NOx sensor based on chemical NOx storage with linear characteristics concerning the NOx dose allowing for additional information on the actual NOx concentration from the signal derivative.