Selective detection of hazardous VOCs for indoor air quality applications using a virtual gas sensor array
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Published:2014-10-21
Issue:2
Volume:3
Page:253-263
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ISSN:2194-878X
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Container-title:Journal of Sensors and Sensor Systems
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language:en
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Short-container-title:J. Sens. Sens. Syst.
Author:
Leidinger M., Sauerwald T., Reimringer W.ORCID, Ventura G., Schütze A.
Abstract
Abstract. An approach for detecting hazardous volatile organic compounds (VOCs) in ppb and sub-ppb concentrations is presented. Using three types of metal oxide semiconductor (MOS) gas sensors in temperature cycled operation, formaldehyde, benzene and naphthalene in trace concentrations, reflecting threshold limit values as proposed by the WHO and European national health institutions, are successfully identified against a varying ethanol background of up to 2 ppm. For signal processing, linear discriminant analysis is applied to single sensor data and sensor fusion data. Integrated field test sensor systems for monitoring of indoor air quality (IAQ) using the same types of gas sensors were characterized using the same gas measurement setup and data processing. Performance of the systems is reduced due to gas emissions from the hardware components. These contaminations have been investigated using analytical methods. Despite the reduced sensitivity, concentrations of the target VOCs in the ppb range (100 ppb of formaldehyde; 5 ppb of benzene; 20 ppb of naphthalene) are still clearly detectable with the systems, especially when using the sensor fusion method for combining data of the different MOS sensor types.
Funder
Bundesministerium für Bildung und Forschung Fundação para a Ciência e a Tecnologia
Publisher
Copernicus GmbH
Subject
Electrical and Electronic Engineering,Instrumentation
Reference24 articles.
1. Bernstein, J. A., Alexis, N., Bacchus, H., Leonard Bernstein., I, Fritz, P., Horner, E., Li, N., Mason, S., Nel, A., Oullette, J., Reijula, K., Reponen, T., Seltzer, J., Smith, A., and Tarlo, S. M.: The health effects of nonindustrial indoor air pollution, J. Allergy Clin. Immu., 121, 585–591, 2008. 2. Brinke, J. T., Selvin, S., Hodgson, A. T., Fisk, W. J., Mendell, M. J., Koshland, C. P., and Daisey, J. M.: Development of New Volatile Organic Compound (VOC) Exposure Metrics and their Relationship to "Sick Building Syndrome" Symptoms, Indoor Air, 8, 140–152, https://doi.org/10.1111/j.1600-0668.1998.t01-1-00002.x, 1998. 3. Bur, C., Bastuck, M., Lloyd Spetz, A., Andersson, M., and Schütze, A.: Selectivity enhancement of SiC-FET gas sensors by combining temperature and gate bias cycled operation using multivariate statistics, Sensor. Actuat. B-Chem., 193, 931–940, https://doi.org/10.1016/j.snb.2013.12.030, 2014. 4. Burge, P. S.: Sick building syndrome, Occup. Environ. Med., 61, 185–190, https://doi.org/10.1136/oem.2003.008813, 2004. 5. Conrad, T., Reimringer, W., and Rachel, T.: Modulare Systemplattform zur Bewertung der Luftqualität in Innenräumen basierend auf temperaturmodulierten Metalloxid-Gassensoren, ITG/GMA Fachtagung Sensoren und Messsysteme 2014, ITG Fachbericht 250, VDE Verlag, 2014.
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