Improving Short Term Instability for Quantitative Analyses with Portable Electronic Noses
AbstractOne of the main problems when working with electronic noses is the lack of reproducibility or repeatability of the sensor response, so that, if this problem is not properly considered, electronic noses can be useless, especially for quantitative analyses. On the other hand, irreproducibility is increased with portable and low cost electronic noses where laboratory equipment like gas zero generators cannot be used. In this work, we study the reproducibility of two portable electronic noses, the PEN3 (commercial) and CAPINose (a proprietary design) by using synthetic wine samples. We show that in both cases short term instability associated to the sensors’ response to the same sample and under the same conditions represents a major problem and we propose an internal normalization technique that, in both cases, reduces the variability of the sensors’ response. Finally, we show that the normalization proposed seems to be more effective in the CAPINose case, reducing, for example, the variability associated to the TGS2602 sensor from 12.19% to 2.2%. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Macías, M.M.; Agudo, J.E.; Manso, A.G.; Orellana, C.J.G.; Velasco, H.M.G.; Caballero, R.G. Improving Short Term Instability for Quantitative Analyses with Portable Electronic Noses. Sensors 2014, 14, 10514-10526.
Macías MM, Agudo JE, Manso AG, Orellana CJG, Velasco HMG, Caballero RG. Improving Short Term Instability for Quantitative Analyses with Portable Electronic Noses. Sensors. 2014; 14(6):10514-10526.Chicago/Turabian Style
Macías, Miguel M.; Agudo, J. E.; Manso, Antonio G.; Orellana, Carlos J.G.; Velasco, Horacio M.G.; Caballero, Ramón G. 2014. "Improving Short Term Instability for Quantitative Analyses with Portable Electronic Noses." Sensors 14, no. 6: 10514-10526.