29 May 2013 Chemical sensor systems for environmental and emission control
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Focusing on environment and health aspects, the importance of monitoring and controlling dangerous gases and particulate matter increases. For this purpose we present a new version of silicon carbide based gas sensors with improved properties and suitable for high temperature and harsh environments such as power plants or car exhausts. Development of sulfur dioxide sensors for a power plant application is described as well as sensors for detection of ammonia in connection with the SCR process where urea is converted to ammonia, which reduces nitric oxide components in the exhausts. We also describe progress on nanoparticle detection, especially related to detection of the content of adsorbed particles through heating and detection of emitted molecules by a sensor array. Some results are also presented from impedance spectroscopy for detection of the concentration of nanoparticles but with the potential to reveal more details about the particles such as shape and kind of particles.
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Anita Lloyd Spetz, Anita Lloyd Spetz, Zhafira Darmastuti, Zhafira Darmastuti, Christian Bur, Christian Bur, Joni Huotari, Joni Huotari, Robert Bjorklund, Robert Bjorklund, Niclas Lindqvist, Niclas Lindqvist, Jyrki Lappalainen, Jyrki Lappalainen, Heli Jantunen, Heli Jantunen, Andreas Schütze, Andreas Schütze, Mike Andersson, Mike Andersson, } "Chemical sensor systems for environmental and emission control", Proc. SPIE 8725, Micro- and Nanotechnology Sensors, Systems, and Applications V, 87250I (29 May 2013); doi: 10.1117/12.2016795; https://doi.org/10.1117/12.2016795

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