P2.0.10 SnO2 based tea aroma sensors for Electronic Nose

doi:https://doi.org/10.5162/imcs2012/p2.0.10

Open AccessArticle10.5162/imcs2012/p2.0.10

P2.0.10 SnO2 based tea aroma sensors for Electronic Nose

Nabarun Bhattacharyya,Debashis Dutta,Saptarshi Ghosh,S. Mandel,Mousumi Narjinary,Supriyo Sen+1 more-2012-01-01-Proceedings IMCS 2012

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TL;DRAbstract

A sensor array composed of SnO 2 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 SnO 2 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.

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A sensor array composed of SnO 2 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 SnO 2 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.

Keywords

Electronic noseSensor arrayAromaPrincipal component analysisMaterials scienceBlack teaDopingOxide

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