Please use this identifier to cite or link to this item:
Title: An artificial nose based on M-porphyrin (M = Mg, Zn) thin film and optical spectroscopy
Authors: Teerakiat Kerdcharoen
Keywords: Alcoholic beverages;Artificial nose;Classification results;Density functional theory calculations;Food industries;Optical absorbance;Optical gas sensors;Optical spectroscopy;Polycrystalline structure;Principle component analysis;Sensing material;UV-vis spectroscopy;X-rays diffraction
Issue Date: 2010
Publisher: 2010 3rd International Nanoelectronics Conference, INEC 2010
Citation: ฟิสิกส์
Series/Report no.: ;968-969
Abstract: Artificial nose has recently become an emerging instrument for quality assurance in the food industry. These paper presents the optical gas sensors based on Magnesium - 5,10,15,20 - tetra phenyl - porphyrin (MgTPP) and Zinc - 5,10,15,20 - tetra phenyl- porphyrin (ZnTPP) thin films and their application as an artificial nose. Based on the measurement of optical absorbance response using a general UV-Vis spectroscopy, this artificial noses was tested to discriminate various volatile organic compounds (VOCs) and Thai beverages. Atomic force microscopy (AFM) and X-rays diffraction were used to confirm the polycrystalline structure of the sensing materials. Density functional theory (DFT) calculations reveal that MgTPP interacts more strongly with the VOCs than ZnTPP, especially with water and methanol. The classification results of VOCs and Thai beverage vapors using the principle component analysis indicate that both MgTPP and ZnTPP-based artificial noses can be an efficient tool for quality assurance of alcoholic beverages.
Description: Scopus
ISSN: 978-142443544-9
Appears in Collections:Physics: International Proceedings

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.