P2.9.30 Building of a double-layered gas sensors array-based electronic nose to assess the freshness of fish
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.9 Technology and Application
- H. Kuo, W. Ding - Department of Chemistry, National Central University (Taiwan), L. Wang, T. Su, C. Ho - Chemical System Research Division, Chung-Shan Institute of Science and Technology (Taiwan), S. Chiu, K. Tang, S. Yang - Department of Electrical Engineering, National Tsing-Hua University (Taiwan)
- 1790 - 1793
In this study, the main gas compositions of spoiled fish was found to be sulfide compounds rather than amine compounds by using Tenax TA trap followed by thermo desorption (TD) and gas chromatography/mass spectrometry (GC/MS). And then, a bio-inspired two-layer multiple-walled carbon nanotube (MWCNT)-polymer composite sensor system was developed to detect sulfide compounds especially dimethyl disulfide (DMDS), the major compound released from the spoiled fish. This double-layered gas sensors array shows excellent performance in reproducibility and detection limit of DMDS. The proposed architecture would be useful for fish freshness assessment.