This yaar, we attain to thirtieth anniversary scnce Japan Association on Odor Enviroment changed into Corporation Aggregate. Until then, the aggregate worked about seventeen years as private aggregate. I express as to circumstances and effouts of seniors till corporation. Regarding the period of corporation aggregate, I relate organization, remarkable event, entrusted business, pablicationn, seminar and learned society as to odor control every ten years, and introduce the topics of close-up indystry, progress of odor control technique, installation results.
Studies on technologies for the odor measurement launched both side of sensory measurement and analysis especially carried out by “GC” method and also the purpose was to Control technologies on offensive odor.
Those previous technical studies guided to the Offensive Odor Control Law was established by the Ministry of Japanese Environment in 1971.
On the other hand，the measurement method named ”Triangle Odor Bag Method” established by TOKYO Metropolitan Government in 1977 was excellent at estimation of odor strength even in case of multiple odor compounds.
Accordingly, the Environmental Agency of Government asked the Japan Environmental Sanitation Center to increase the designated Odor substances by GC method up to 23 substances.
All the while GC method has also been developed to contribute toward determination of odor substances to be eliminated more easily and sufficiently.