Abstract
This study was aimed to evaluate the relationship between the concentration and dilution factor (ratio) using the Air Dilution Olfactory Method, which is suggested in the Standard Method of Odor Compounds, by measuring dilution factor for m-xylene, toluene, methyl ethyl ketone, methyl isobutyl ketone, and butyl acetate. For the measurement, 18 panelists were selected by several criteria through panel test. Panelists chosen for their closely similar sensitivities provide more reproducible values. The estimation showed that the correlation of the concentration with dilution factor for the 5 compounds including the m-xylene, toluene, methyl ethyl ketone, methyl isobutyl ketone, and butyl acetate can be reasonably expressed by the equation log C = AflogD + F (Af : material costant, F : constant). The result of this study is suggested to be used as a base data for research on measures to improve the regulation standards for complex odor concentration on site boundary in operation, as well as a correlation between the concentration and dilution factor for the designated foul odor substances, and their characteristics.
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