Development of a Surface Acoustic Wave Sensor for In-Situ Monitoring of Volatile Organic Compounds

Sensors

Clifford K. Ho¹  Eric R. Lindgren¹  K. Scott Rawlinson¹  Lucas K. McGrath¹ 

[1] Sandia National Laboratories, P.O. Box 5800, Albuquerque, NM 87185, USA

关键词: SAW;    surface acoustic wave;    sensor;    hydrocarbon;    polymer;    monitoring;   

DOI  :  10.3390/s30700236

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.