Finding F-0340

“The mean indoor HCHO concentration (658 μg/m3) in the L-shaped dwellings was considerably higher than the Chinese standard.”

Zhang et al. Indoor Air Quality in Tujia Dwellings in Hunan, China: Field Tests, Numerical Simulations, and Mitigation Strategies (2022). International journal of environmental research and public health. Page 10. CKB 8668

Structure

Source: Indoor fuel combustion
Factor: Formaldehyde (CH₂O)
Population: elderly residents of Tujia dwellings
Setting: traditional dwelling, CN
Study design: field measurements of indoor air quality in traditional Tujia dwellings in Hunan (Zuozi and L-shaped house types) with numerical simulation and mitigation strategies; residents keep open fires by custom (class 4)
Effect: mean 658
Caveat: the authors link indoor pollution to the local fire culture (open fires); the source slug is the nearest available

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.