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Adsorption Response of Semiconductor Gas Sensors with the Use of a Portable Flow-Through Monitor


Dimitrakopoulos, LT and Alexander, PW and Hibbert, DB, Adsorption Response of Semiconductor Gas Sensors with the Use of a Portable Flow-Through Monitor, Field Analytical Chemistry and Technology, 1, (6) pp. 357-366. ISSN 1086-900X (1997) [Refereed Article]

DOI: doi:10.1002/(SICI)1520-6521(199712)1:6<357::AID-FACT5>3.3.CO;2-9


The response mechanism of ethanol for the TGS812 and TGS824 tin-oxide semiconductor gas sensors in a portable flow-through arrangement follows a linearized Langmuir model with correlation coefficients of 0.9992 and 0.9978, respectively. The portable battery-powered gas monitor is small in size (20 x 11 x 6 cm), lightweight (1.1 kg), requires low power (3.6 W), which is sufficient to operate the system for approximately 4 h, and is connected to a notebook computer for real-time display of data and data acquisition. Analysis of commercial beer and wine samples showed a high correlation (r2 = 0.9996) with gas chromatography results. Therefore, the Langmuir model used with this portable gas monitor offers a linear calibration method for quan-titative analysis of ethanol. © 1997 by John Wiley & Sons, Inc.

Item Details

Item Type:Refereed Article
Research Division:Chemical Sciences
Research Group:Analytical chemistry
Research Field:Instrumental methods (excl. immunological and bioassay methods)
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the chemical sciences
UTAS Author:Dimitrakopoulos, LT (Mrs Lucy Tina Dimitrakopoulos)
UTAS Author:Alexander, PW (Professor Peter Alexander)
ID Code:12295
Year Published:1997
Web of Science® Times Cited:2
Deposited By:Applied Science
Deposited On:1997-08-01
Last Modified:2011-08-15

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