ISSN : 1598-6616(Print)
ISSN : 2287-6731(Online)
ISSN : 2287-6731(Online)
Journal of Korean Society of Odor Research and Engineering Vol.9 No.2 pp.72-79
개별 악취물질과 혼합 악취물질에 대한 농도와 악취강도의 연계성 연구 황화수소와 아세트알데하이드를 중심으로
Abstract
In this study, we attempted to evaluate the relationship between dilution‐to‐threshold (D/T) ratio derived by air dilution sensory (ADS) test and the concentration levels of both individual odorant (using H₂S and acetaldehyde (AA)) and their mixture. For the purpose of our comparative study, we prepared both standard gases of two individual compounds and their mixture at 9 concentration levels. Each of all these samples were analyzed by ADS test, and the results were analyzed in relation to their odor intensity. The results of individual odorant samples showed the two contrasting characteristics of each individual compound. H2S generally showed sensitive detection at low concentration but less sensitive detection with increasing concentration. In contrast, AA showed fairly contrasting trend with slow increasing sensitivity. When the D/T ratios estimated from individual samples were used to predict those of mixed samples, the results were reflecting the mixed effects of the basic characteristics owned by each individual compound. As the lower and upper odor intensities of mixed samples were best reflected by AA and H2S, respectively, the D/T ratio of mixed samples complied with the larger D/T values of each compound at a given odor intensity.
