Ozone detection

In the chemiluminescent detection of nitrogen oxides, a constant source of ozone reacts with a metered air sample containing nitric oxide. Fontijn et al. suggested that this method could also be used for ozone detection by using a constant nitric oxide source for reaction with ozone in the air sample. The ozone-nitric oxide reaction is carried out at reduced pressure, to avoid quenching the chemiluminescent reaction. Detection of the emission in the spectral r on involved (600-3,000 nm) requires using a near-infrared-sensitive photomultiplier tube. The noise of such a photomultiplier tube is reduced by cooling it to about - 20 C. ... 

The performance of a portable instrument used as a dosimeter or personal monitor for ozone detection in parts per billion concentrations has been evaluated... 

Hosoya, Y, Itagaki, Y, Aono, H. and Sadaoka, Y. (2005) Ozone detection in air using SmFe03... 

During ozone detection we have the other situation. Gas response to ozone is very fast. Even at 250 C the response time does not exceed 2-3 s. We can assume that during ozone detection inter-agglomerate contacts are gas sensing elements. Only in this case we can explain too fast gas response to ozone. Sn02 films deposited by SILD have macro-porous stmcture, and therefore the influence of inter-crystallite diffusion can be ignored. 

Becker, T.,Tomasi, L., Bosch-von BraunmuliL C., Muller, G., Fagli, G. and Comini, E. (1999) Ozone detection using low-power-consumption metal-oxide gas sensors. Sensors and Actuators a-Physical 74,229-32. 

In an atmosphere containing ozone, stretched samples of unsaturated elastomers develop surface cracks that grow in length and depth until they eventually sever the test piece. Even when they are quite small, they can cause a serious reduction in strength and fatigue life. Quite small concentrations of ozone will induce cracking, given sufficient time. The effect is so sensitive, in fact, that it is the basis for an ozone detection system (Mott and Roland, 1999). 

Taslakov M, Simeonov V, Froidevaux M, van den Bergh H. 2006. Open-path ozone detection by quantum-cascade laser . Appl. Phys. B 82(3) 501-506. 

Doll T, Lechner J, Eisele I, Schierbaum KD, Gopel W (1996) Ozone detection in the ppb range with work function sensors operating at room temperature. Sens Actuators B 34 506-510 Drake C, Deshpande S, Bera D, Seal S (2007) Metallic nanostructured materials based sensors. Intern Mater Rev 52(5) 289-317... 

Maruo YY, Kunioka T, Akaoka K, Nakamura J (2009) Development and evaluation of ozone detection paper. Sens Actuators B 135 575-580... 

Maruo YY, Akaoka K, Nakamura J (2010) Development and performance evaluation of ozone detection paper using azo dye orange 1 effect of pH. Sens Actuators B 143 487-493 Mastrangelo C, Tang W (1994) Semiconductor sensor technologies. In Sze S (ed) Semiconductor sensors. Wiley, New York, pp 17-95... 

During the past few decades, many inorganic materials have been tested. Experiment has shown that ionic films like hydrated potassium halogenides provide excellent work-function sensor signals for ozone detection at room temperature (Doll et al. 1996). Figure 17.5a shows the work-function changes at RT of various materials exposed to O3 (-300 ppb in air). It is seen that KI has maximum response. 

Orlando, FL, 21st-23rd Sept. 1999, paper 62 OZONE DETECTION BY CRACK-INDUCED OPACITY IN RUBBER... 

Indium oxide is an n-type semiconductor that is widely used in optoelectronic devices such as transistors, LEDs, and solar cells, especially when doped with tin (ITO). Since the first report by Takada on the chemoresistive properties of indium oxide for ozone detection [31], In20s has been widely studied as a sensing material especially for ozone, oxygen, and NO,. 

Takada, T. (1988) Ozone detection by 1020 thin film gas sensor, in Chemical Sensor Technology, vol. 2 (ed. T. Seiyama), Elsevier, Amsterdam, pp. 

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