Finding F-0336

“HCHO concentrations also decreased, with room 1A decreasing from 2.56 ppm to 0.22 ppm, room 3B decreasing from 4.50 ppm to 2.82 ppm, and room 5C decreasing from 6.88 ppm to 2.15 ppm over the same period.”

Jung et al. Mitigating Indoor Air Pollution in University Dormitory: The Need for Better Ventilation and Resident Awareness (2023). Buildings. Page 1. CKB 0073

Structure

Source: Building materials
Factor: Formaldehyde (CH₂O)
Setting: university dormitory (new), AE
Study design: repeated measurements of TVOC and formaldehyde in three identical rooms on different floors of a newly constructed university dormitory in the United Arab Emirates over about two months (class 4)
Effect: difference
Flags: implausible
Caveat: formaldehyde of 2 to 7 ppm (thousands of μg/m3) is far above any usual indoor level and rests on the instrument used; the decrease is attributed by the authors to ventilation and reduced occupancy

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.