What's That After-Rain Smell Made Of?

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Reactions Science Videos | April 3, 2018

There’s a sweet smell in the air after it rains, whether it’s a spring shower or a summer storm. This week on Reactions, we explain the chemistry of petrichor, the smell of rain.


Sources:
The smell of rain: how CSIRO invented a new word

FATTY ACIDS  FROM EXPOSED ROCK  SURFACES*

palmitic acid

Genesis of petrichor

Petrichor and Plant Growth

What Makes Rain Smell So Good?

Geosmin, an Earthy-Smelling Substance Isolated from Actinomycetes

Streptomyces as a source of Geosmin and 2-methylisoborneol associated taste and odour episodes in drinking water reservoirs

Odor sensitivity to geosmin enantiomers

The Chemical Compounds Behind The Smell Of Rain

Rainfall can release aerosols, study finds

Aerosol generation by raindrop impact on soil

Ever wonder why dogs sniff each others' butts? Or how Adderall works? Or whether it's OK to pee in the pool? We've got you covered: Reactions a web series about the chemistry that surrounds you every day.

 

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