Finding F-1257

“Among other products, the surface yields of 4-OPA, geranyl acetone, and undecanal in long clothing dropped to half those in short clothing or below, and for dodecanal, production from ozone chemistry was not even detected with long clothing.”

Influence of Temperature, Humidity, Personal Hygiene, and Clothing on the Ozonolysis of Skin Oil at the Skin’s Surface: Self Regulation (2025). ACS Environ Au. Page 7. CKB 1402

Structure

Factor: Volatile organic compounds (VOCs)
Method: Emission test chamber method
Population: three adult volunteers
Setting: test chamber, CN
Study design: single-person chamber experiments with three volunteers at Tsinghua University: emission fluxes of the products of skin oil ozonolysis measured with a proton transfer reaction mass spectrometer with and without ozone injection, while air temperature, relative humidity, bathing frequency, clothing soiling and clothing coverage were varied one at a time (class 3)
Caveat: the register has no slug for these individual products, so they are named here; a yield, not a room concentration

A Finding records what one published document states, verbatim and with its page. It is not a conclusion of Coridum; see the Claims that build on it.