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Title: Drift analysis of a Pd loaded SnO2 based linalool sensor
Authors: Kakoty, Priyanka
Bhuyan, Manabendra
Das, Karen
Keywords: Drift;Gas sensor;Linalool;Sensitivity
Issue Date: Apr-2020
Publisher: NISCAIR-CSIR, India
Abstract: An approach has been made in this work to analyze sensitivity drift in a Pd decorated SnO2 sensor developed for detection of linalool, a significant aroma compound in tea.  Prior to the drift analysis, an attempt has been made to choose the optimum loading percentage of Pd in SnO2 for linalool sensing.  An inexpensive and simplistic hydrothermal method has been used to develop five different Pd decorated SnO2 sensors (0.5 wt%, 2 wt%, 5 wt%, 6 wt% and 8 wt%) and compare their sensitivities when exposed to linalool vapour. The analysis has shown that 6 wt% exhibits better sensitivity (62.7%) towards Linalool at a relatively lower temperature (100 °C) as compared to all the other synthesized sensors. Henceforth, extensive experiments has been performed on the 6 wt% Pd decorated SnO2 sensor for a period of one month to analyze its stability. Relative standard deviation and principal component analysis based drift analysis has been performed to understand its changing attributes under repeated measurements.
Page(s): 445-451
ISSN: 0975-1017 (Online); 0971-4588 (Print)
Appears in Collections:IJEMS Vol.27(2) [April 2020]

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