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Proceedings Paper

Fish freshness sensor
Author(s): Jeremy M. Hammond; Todd Mlsna; Dean J. Smith; Bernd Fruhberger
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Paper Abstract

An array of semiconducting metal oxide (SMO) chemiresistive sensor can quantitatively measure the freshness of Atlantic salmon. A variety of SMO films were tested, including films containing oxides of tungsten and tin. Experiments were performed with these films to determine if they were sensitive to trimethylamine and/or dimethylamine, known Atlantic salmon degradation products. The electrical resistance of the films before and during exposures to concentrations of the amines was monitored. The sensor temperatures were varied to determine the operating conditions for sensitivity and selectivity to one or both gases. The most promising films were then used to monitor the degradation of Atlantic salmon is conjunction with a sensory evaluation panel and tests using gas chromatography mass spectrometry and total volatile base nitrogen.

Paper Details

Date Published: 23 November 1999
PDF: 9 pages
Proc. SPIE 3856, Internal Standardization and Calibration Architectures for Chemical Sensors, (23 November 1999); doi: 10.1117/12.371311
Show Author Affiliations
Jeremy M. Hammond, Sensor Research and Development Corp. (United States)
Todd Mlsna, Sensor Research and Development Corp. (United States)
Dean J. Smith, Sensor Research and Development Corp. (United States)
Bernd Fruhberger, Sensor Research and Development Corp. (United States)


Published in SPIE Proceedings Vol. 3856:
Internal Standardization and Calibration Architectures for Chemical Sensors
Ronald E. Shaffer; Radislav A. Potyrailo, Editor(s)

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