Sensors 2003, 3(7), 236-247; https://doi.org/10.3390/s30700236
Development of a Surface Acoustic Wave Sensor for In-Situ Monitoring of Volatile Organic Compounds
Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, USA
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Received: 24 June 2003 / Accepted: 11 July 2003 / Published: 27 July 2003
Abstract
This paper describes the development of a surface-acoustic-wave (SAW) sensor that is designed to be operated continuously and in situ to detect volatile organic compounds. A ruggedized stainless-steel package that encases the SAW device and integrated circuit board allows the sensor to be deployed in a variety of media including air, soil, and even water. Polymers were optimized and chosen based on their response to chlorinated aliphatic hydrocarbons (e.g., trichloroethylene), which are common groundwater contaminants. Initial testing indicates that a running-average data-logging algorithm can reduce the noise and increase the sensitivity of the in-situ sensor. View Full-TextKeywords:
SAW; surface acoustic wave; sensor; hydrocarbon; polymer; monitoring
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Ho, C.K.; Lindgren, E.R.; Rawlinson, K.S.; McGrath, L.K.; Wright, J.L. Development of a Surface Acoustic Wave Sensor for In-Situ Monitoring of Volatile Organic Compounds. Sensors 2003, 3, 236-247.