Finding F-1240

“At the end of the ozone injection the monoterpene concentration was 4.2 ppbv (5.2 μg m−3) below the projected concentration if no ozone was present.”

Poppendieck et al. Jingle bells, what are those smells? Indoor VOC emissions from a live Christmas tree (2024). Indoor environments. Page 9. CKB 6007

Structure

Factor: Monoterpenes
Method: Emission test chamber method
Setting: test chamber, US
Study design: chamber study at the National Institute of Standards and Technology: a freshly cut Douglas fir stood for seventeen days in an environmentally controlled chamber and the volatile organic compounds it emitted were measured continuously with a proton transfer reaction mass spectrometer, with ozone injected on several of the days to observe the indoor chemistry it starts (class 4)
Effect: difference 4.2
Caveat: the projection is a line the study fits to the periods without ozone

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.