,* 2* , TBM TBM TBM TBM, TBM TBM TBM. J. Japan Association on Odor Environment Vol..- No. +,*+, * ** * ** ** -*/ 2/ CA

Transkript

1 45 TBM TBM, /* TBM - TBM TBM +.,* 2* , +,. +1 / + TBM, TBM - TBM. +2 * ** * **,CA ** *,-* **./ + 11 ** -*/ 2/ CA kobayakawa-tatsu@aist.go.jp

2 46.- +, /2 - -* TBM., , TBM,, +3 +2,- Rose cis Green Sweat - + TBM TBM ,-,+ TBM +2 / *.+., +*.*,- - + a,* +,3.,-+,/ +,, TBM. : TBM +

3 47 + a MFC, a b c b -* cm A/D /* c b + L/min + + ** +,*.2* +**. L,-, min + b -* cm +3 * :

4 48.- +,. / :., AD -++ /* OSIT-J -, /* cm + c +, 2,. -+,,**1, 1 TBM -. +** TBM. + + * +** +3 -, +3, :,.2* * : +, +,* OSIT-J,* + : ,, TBM,, :

5 49 -, :.2* +, , -.. TBM TBM. TBM 1 TBM.+.+,.++ TBM 2+,. TBM +. - *2-. *32. exp 2+. +* y t / TBM /.,1 +-. /* y t

6 5.- +,.., TBM TBM, /* -* +, TBM /,2 -./ : F -,,-. ++./, p*.**+ TBM Green +, p*.*/ ;, p*.**+ TBM,2 Rose Green Sweat,1 +, /+,,, / : F -,,-. ++./, p*.**+ ; : F 12,,-.. 2, p*.**+ / TBM TBM Green TBM TBM - p**/. ; p *.**+ TBM Rose Green Sweat -,*2+ +,.13 /+ +,-/- p*.**+ ; 2 p*.*+ ; /2 p*.*/ /+ /++ **/. p*+. TBM Q 13,* p*.*+ ; +- p*.*/ +* *.*/ p /, -. + *+. TBM + 2

7 51,2 TBM Green Sweat Rose - TBM Rose Green Sweat TBM - TBM Green Sweat TBM TBM TBM - y*13. *3/. exp 22. +* t Sweat y t OSI- TBM Rose Green Sweat,-,,. T-J * +/ +* 2.* +* * TBM Green Sweat Rose - +3 /, TBM TBM +2 -, * +, Q +/./ p*.*+ TBM Green, p*.*+ +2* +3, Q1. 3 p **/. TBM Rose, /* p**+. /+-, - y*1/. +*. exp 2. +* t TBM y - *3+. +,. exp+/ +* t Rose +3 - * exp 2*. +* t Green y

8 52.- +,.,/ 1 / TBM TBM +3 +,. TBM, /* TBM +2 Rose Green Sweat TBM TBM.,, -+ -1*,*++ / : -, 3, 3/ +33 Ekman, G., Berglund, B., Berglund, U., Lindvall, T. : Perceived intensity of odor as a function of time of adaptation, Scandinavian Journal of Psychology, 2, ,( +31). 1 Cain, W.S. : Perception of odor intensity and the timecourse of olfactory adaptation, ASHRAE Transactions, 2*, /-1/, ( +31. ). 2 Berglund, B. (eds. Magnen, J.L., MacLeod, P.) : ( +311), Quality, intensity, and time in olfactory perception, in Olfaction and Taste VI, p.-1..1, Information Retrieval. 3 Berglund, B., Berglund, U., Lindvall, T. : Olfactory self- and cross-adaptation : E# ects of time of adaptation on perceived odor intensity, Sensory Processes,,, ,( +312). +* Dalton, P. : Odor perception and beliefs about risk, Chemical Senses,,+,..1./2, ( +33). ++ Dalton, P., Wysocki, C.J., Brody, M.J., Lawley, H.J. : The influence of cognitive bias on the perceived odor, irritation and health symptoms from chemical exposure, International Archives of Occupational and Environ- Mental Health, 3,.*1.+1, ( +331). +, Cain, W.S., Engen, T. (ed. Pfa# mann, C.) : ( +33), Psychophysics and sensory coding, Olfactory adaptation and the scaling of odor intensity, in Olfaction and Taste III, p +,1 +.+, Rockefeller University Press. +- Cain, W.S. : Odor intensity after self-adaptation and cross-adaptation, Perception and Psychophysics, 1,,1+,1/,( +31* ). +. Dalton, P., Wysocki, C. J. : The nature and duration of adaptation following longterm odor exposure, Perception and Psychophysics, /2, ,, ( +33). +/ Dalton, P., Cowart, B., Dilks, D., Gould, M., Lees, P.S., Stefaniak, A., Emmett, E. : Olfactory function in workers exposed to styrene in the reinforced-plastics indus- : try, American Journal of Industrial Medicine,.., +++, (,**-). + Dalton, P., Lees, P.S., Gould, M., Dilks, D., Stefaniak, A., Bader, M., Ihrig, A., Triebig, G. : Evaluation of longterm occupational exposure to styrene vapor on olfac- + :,*+* tory function, Chemical Senses, -,, , (,**1).,- +1 Kobayashi, T., Sakai, N., Kobayakawa, T., Akiyama,, : S., Toda, H., Saito, S. : E# ects of cognitive factors on perceived odor intensity in adaptation/habituation.+, ,*+* processes : From, di# erent odor presentation methods, Chemical Senses, --, , (,**2) : :.+,., , ++,,*+*,**,. : +3 : +33.

9 53 p ,,-,* Saito,S.,Ayabe-Kanamura,S.,Takashima,Y.,Gotow,N., Naito, N., Nozawa, T., Mise, M., Deguchi, Y., Kobayakawa, : T. : Development of a smell identification test using a. novel sticktype odor presentation kit, Chemical Senses,.-, ,**. -+,-13-3+,(,**).,.,+ : : OSIT - Aroma Re- +*1, 3/3/,**. search, 1,,,,1,,**,/,, : :, OSIT : -/, +1,+,**. AROMA RESEARCH,,., -2-1+,**/ Time-course transition of olfactory fatigue for city gas odor Tomoko MATSUBASA*, Naomi GOTOW**, Yasushiro GOMI*,,CA Hideki TODA**, Tatsu KOBAYAKAWA** * Technology Research Institute, Tokyo Gas Co., Ltd., +11 Suehiro-cho, Tsurumi-ku, Yokohama, Kanagawa,-* **./, Japan ** Human Technology Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central +++, Higashi, Tsukuba, Ibaraki -*/ 2/, Japan CA Corresponding Author Abstract Artificial odorant is attached to city gas, which is originally odorless, in order for customers to detect gas leakage by their own olfaction. In this study, we noted indispensable aspect as city gas odor, which is city gas odor should be hard to cause olfactory fatigue. We defined olfactory fatigue as situation under unidentification for odor quality, caused by continuous odor s exposure. And we tried to provide customers useful information about time-course transition of olfactory fatigue for city gas odor under city gas company s leading. First, using tertiary-butylmercaptan (hereafter, TBM) which is main ingredient of city gas odor, we performed real-time evaluation of perceived intensity to continuous odor s exposure, and obtained time-course transitional approximation of olfactory fatigue, calculated by perceived intensity. This analysis showed that the time for olfactory fatigue among half customers would be about two minutes, after exposure to city gas odor. Secondly, we performed the same evaluation mentioned above for additional three odorants familiar in Japanese daily life, and compared time-course transition of olfactory fatigue among TBM and three daily odorants. Results implied that TBM does not remarkably caused olfactory fatigue more easily than other odorants. Accordingly, we concluded that TBM was an odorant suitable for city gas odor. Key words : city gas, olfactory fatigue, time-course transition, recognition threshold, approximation,- 3,