P2.0.10 SnO2 based tea aroma sensors for Electronic Nose
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
- P2.0 Metal Oxide-based Sensors
- N. Bhattacharyya, D. Dutta - C-DAC, E-2/1, Block-GP, Sector-V (India), S. Ghosh, S. Mandel, M. Narjinary, S. Sen - CSIR-Central Glass and Ceramic Research Institute (India), R. Bandyopadhyay - Jadavpur University (India)
- 1289 - 1292
A sensor array composed of SnO2 based thick film metal oxide sensors for quality evaluation of black tea is described in this paper. Simple sonochemical technique has been used to synthesize the composition. Different elements such as Ag, Au, Pd, Pt, Fe are doped in SnO2 and their responses (change in resistance) are observed towards the volatile components present in dry black tea leaves. After repeated trials, some of these sensors are selected to form the sensor array on the basis of their discriminating ability. Responses from multidimensional array are visualized using principal component analysis.