Formaldehyde Gas Sensors: A Review

Sensors

Po-Ren Chung²  Chun-Ta Tzeng²  Ming-Tsun Ke¹ 

[1]Department of Energy and Refrigerating Air-conditioning Engineering, National Taipei University of Technology, Taipei 106, Taiwan

[2]Department of Architecture, National Cheng Kung University, Tainan 701, Taiwan

[3] E-Mails:

关键词: formaldehyde;    gas sensor;    indoor air;    MEMS;    sick building syndrome (SBS);   

DOI  :  10.3390/s130404468

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.