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Sensors 2015, 15(2), 2888-2901; doi:10.3390/s150202888

Research on Odor Interaction between Aldehyde Compounds via a Partial Differential Equation (PDE) Model

School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Xueyuan Road 30, Haidian District, Beijing 100083, China
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Received: 10 December 2014 / Revised: 13 January 2015 / Accepted: 20 January 2015 / Published: 28 January 2015
(This article belongs to the Special Issue Modern Technologies for Sensing Pollution in Air, Water, and Soil)
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Abstract

In order to explore the odor interaction of binary odor mixtures, a series of odor intensity evaluation tests were performed using both individual components and binary mixtures of aldehydes. Based on the linear relation between the logarithm of odor activity value and odor intensity of individual substances, the relationship between concentrations of individual constituents and their joint odor intensity was investigated by employing a partial differential equation (PDE) model. The obtained results showed that the binary odor interaction was mainly influenced by the mixing ratio of two constituents, but not the concentration level of an odor sample. Besides, an extended PDE model was also proposed on the basis of the above experiments. Through a series of odor intensity matching tests for several different binary odor mixtures, the extended PDE model was proved effective at odor intensity prediction. Furthermore, odorants of the same chemical group and similar odor type exhibited similar characteristics in the binary odor interaction. The overall results suggested that the PDE model is a more interpretable way of demonstrating the odor interactions of binary odor mixtures. View Full-Text
Keywords: human sensing; sensory evaluation; odor intensity; odor interaction; air pollution human sensing; sensory evaluation; odor intensity; odor interaction; air pollution
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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LuchunYan; Liu, J.; Qu, C.; Gu, X.; Zhao, X. Research on Odor Interaction between Aldehyde Compounds via a Partial Differential Equation (PDE) Model. Sensors 2015, 15, 2888-2901.

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