were some odor(氣味) during
the rain ? Do you like it ?
I like it very much because
it is just like the odor
of nature !
There are three factors cause the petrichor .
Why can you vision the coming of rain ? Besides the dark clouds, you can smell one of the odors , it is "Ozone"(臭氧) before the afternoon thunderstorms , the thunder provide energy to oxygen moleclues(氧分子) and make it turn into the Ozone .
Another factors contributing to petrichor is "actinomycetes"(放線菌) , after rain as soon as the soil turn dry , actinomycetes' spores will be discharged into the atmosphere . Its surface can produce Geosmin (Dimethy-9-decalol 二甲基-9-甲烷) and caused petrichor.
The other factor is "Aerosols"(氣溶膠) , when the rain touch the soil , it will produce and affect with the bacterial and plant's lipid(油脂) and then caused petrichor . By the way , the slower the rain fall , the more Aerosols are produced .
Next time , when you walk with your friends , both of you can smell pertrichor ,but maybe you are saying the different odor !
沒有留言:
張貼留言