A device with a semiconductor gas sensor based on tin dioxide has been developed for the measurement of alcohol concentrations in exhaled air samples. It includes a chamber of special construction, which provides stability, negligible measurement error and long-term accuracy.
Electronic Nose with an Air Sensor Matrix for Detecting Beef Freshness
โ Scribed by Zhe Zhang; Jin Tong; Dong-hui Chen; Yu-bin Lan
- Publisher
- SciencePress (China)
- Year
- 2008
- Tongue
- English
- Weight
- 265 KB
- Volume
- 5
- Category
- Article
- ISSN
- 1672-6529
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โฆ Synopsis
China is one of the largest meat producing countries in the world. With the growing concern for food safety more attention has been paid to meat quality. The application of conventional test methods for meat quality is limited by many factors, and subjectiveness, such as longer time to prepare samples and to test. A sensor matrix was constructed with several separate air sensors, and tests were conducted to detect the freshness of the beef. The results show that the air sensors TGS2610, TGS2600, TGS2611, TGS2620 and TGS2602 made by Tianjin Figaro Electronic Co, Ltd could be used to determine the degree of freshness but TGS2442 is not suitable. This study provides a foundation for designing and making an economical and practical detector for beef freshness.
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