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Determining the Total Amount of NOx in a Gas Stream : Advances in the Accumulating Gas Sensor Principle

Title data

Beulertz, Gregor ; Groß, Andrea ; Moos, Ralf ; Kubinski, David J. ; Visser, Jacobus H.:
Determining the Total Amount of NOx in a Gas Stream : Advances in the Accumulating Gas Sensor Principle.
In: Sensors and Actuators B: Chemical. Vol. 175 (2012) . - pp. 157-162.
ISSN 0925-4005
DOI: 10.1016/j.snb.2012.02.017

Official URL: Volltext

Project information

Project title:
Project's official titleProject's id
No informationMO 1060/15-1

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The accumulating gas sensor principle is a promising concept for selectively measuring low amounts of an analyte by detecting the total amount of the analyte passing the sensor over a given time interval rather than detecting the concentration at any moment. Hereby, the change of the electrical properties of an analyte storage material due to accumulation of analyte molecules serves as the sensor signal. In earlier approaches of an integrating NOx sensor, the sensor signal correlated only with the time integral of the NOx concentration and was independent on the gas flow rate. To overcome the drawback that the flow rate also contributes to the total amount of the analyte gas passing the sensor, we present a novel sensor setup for which all incoming analyte molecules can be stored. The signal of this sensor is proportional to the integration over time of the product of the analyte concentration and the gas flow, resulting in the correct determination of the total amount of NOx.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Research Institutions
Research Institutions > Research Units
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Profile Fields
Profile Fields > Advanced Fields
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 19 Jan 2015 09:49
Last Modified: 14 Apr 2016 06:51
URI: https://eref.uni-bayreuth.de/id/eprint/5588