Application of principal component analysis to gas sensing characteristics of Cr0.8Fe0.2NbO4 thick film array


Autoria(s): Murthy, Sree Rama A; Pathak, Dhruv; Sharma, Gautam; Gnanasekar, KI; Jayaraman, V; Umarji, AM; Gnanasekaran, T
Data(s)

2015

Resumo

The transient changes in resistances of Cr0.8Fe0.2NbO4 thick film sensors towards specified concentrations of H-2, NH3, acetonitrile, acetone, alcohol, cyclohexane and petroleum gas at different operating temperatures were recorded. The analyte-specific characteristics such as slopes of the response and retrace curves, area under the curve and sensitivity deduced from the transient curve of the respective analyte gas have been used to construct a data matrix. Principal component analysis (PCA) was applied to this data and the score plot was obtained. Distinguishing one reducing gas from the other is demonstrated based on this approach, which otherwise is not possible by measuring relative changes in conductivity. This methodology is extended for three Cr0.8Fe0.2NbO4 thick film sensor array operated at different temperatures. (C) 2015 Elsevier B.V. All rights reserved.

Formato

application/pdf

Identificador

http://eprints.iisc.ernet.in/52604/1/Ana_Chi_Act_892_175_2015.pdf

Murthy, Sree Rama A and Pathak, Dhruv and Sharma, Gautam and Gnanasekar, KI and Jayaraman, V and Umarji, AM and Gnanasekaran, T (2015) Application of principal component analysis to gas sensing characteristics of Cr0.8Fe0.2NbO4 thick film array. In: ANALYTICA CHIMICA ACTA, 892 . pp. 175-182.

Publicador

ELSEVIER SCIENCE BV

Relação

http://dx.doi.org/10.1016/j.aca.2015.08.034

http://eprints.iisc.ernet.in/52604/

Palavras-Chave #Materials Research Centre
Tipo

Journal Article

PeerReviewed