P2.0.10 SnO2 based tea aroma sensors for Electronic Nose

N. Bhattacharyya, D. Dutta, S. Ghosh, S. Mandel, M. Narjinary, S. Sen & R. Bandyopadhyay
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...