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Formaldehyde Gas Sensors: A Review
Department of Architecture, National Cheng Kung University, Tainan 701, Taiwan
Department of Energy and Refrigerating Air-conditioning Engineering, National Taipei University of Technology, Taipei 106, Taiwan
Department of Vehicle Engineering, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
* Authors to whom correspondence should be addressed.
Received: 27 February 2013; in revised form: 25 March 2013 / Accepted: 26 March 2013 / Published: 2 April 2013
Abstract: Many methods based on spectrophotometric, fluorometric, piezoresistive, amperometric or conductive measurements have been proposed for detecting the concentration of formaldehyde in air. However, conventional formaldehyde measurement systems are bulky and expensive and require the services of highly-trained operators. Accordingly, the emergence of sophisticated technologies in recent years has prompted the development of many microscale gaseous formaldehyde detection systems. Besides their compact size, such devices have many other advantages over their macroscale counterparts, including a real-time response, a more straightforward operation, lower power consumption, and the potential for low-cost batch production. This paper commences by providing a high level overview of the formaldehyde gas sensing field and then describes some of the more significant real-time sensors presented in the literature over the past 10 years or so.
Keywords: formaldehyde; gas sensor; indoor air; MEMS; sick building syndrome (SBS)
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Chung, P.-R.; Tzeng, C.-T.; Ke, M.-T.; Lee, C.-Y. Formaldehyde Gas Sensors: A Review. Sensors 2013, 13, 4468-4484.
Chung P-R, Tzeng C-T, Ke M-T, Lee C-Y. Formaldehyde Gas Sensors: A Review. Sensors. 2013; 13(4):4468-4484.
Chung, Po-Ren; Tzeng, Chun-Ta; Ke, Ming-Tsun; Lee, Chia-Yen. 2013. "Formaldehyde Gas Sensors: A Review." Sensors 13, no. 4: 4468-4484.