2022 Volume 24 Issue 1 Pages 1-9
In this study, we investigated a method for measuring the distribution of aromatic odor. The reactions of four types of semiconductor gas sensors were measured using citrus note fragrances, odorless solvents, and aromatic liquid mixed with fragrances and solvents. As a result, the ammonia-sensitive gas sensor did not react to a solvent which human cannot detect. This sensor reacted with fragrances and aromatic liquid that human can detect. In addition, the reaction of the aromatic liquid with to each odor concentration was measured using 31 ammonia-sensitive gas sensors. The relational equation between the odor concentration and the resistance ratio of the gas sensors was obtained. The correlation coefficient between the odor concentration and the resistance ratio of the gas sensors was 0.75 or more in 31 sensors. Using 31 gas sensors, the distribution of aromatic odor in the laboratory was measured. Using the relational equation between the gas sensor resistance ratio and the odor concentration, we found the possibility of measuring the distribution of odor corresponding to the human odor sensation.
