Finding · as stated by the study, recorded by Coridum · status verified-machine
Finding F-1610
“The average PM2.5 concentration was 31.5 ± 12.4 μg/m3, meeting the Standard for indoor air quality in China.”
Structure
- Factor
- Particulate matter (PM₂.₅ and PM₁₀)
- Setting
- metro station, CN
- Study design
- study of metro station staff: fine particles and their metal composition measured at three metro stations, with urinary markers of oxidative stress and inflammation collected from the staff (class 4)
- Effect
- mean 31.5
- Sample
- 74 participants
- Caveat
- the study adds that zinc, copper, manganese and iron were ten times higher indoors than in the ambient air, so the mass alone understates the metal exposure
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.