Finding · as stated by the study, recorded by Coridum · status verified-machine
Finding F-0694
“However, the mean 24-hour concentration for NO2 (0.15 ppm; SD: 0.03 ppm) is above the most recent WHO AQG46 of 0.013 ppm (converted from μg/m3)”
Structure
- Factor
- Nitrogen dioxide (NO₂)
- Setting
- dwelling, AU
- Study design
- cross-sectional measurement study in 111 non-smoking residences in Perth, Western Australia: 24-hour indoor measurement of particulate matter, total volatile organic compounds, carbon dioxide, carbon monoxide, nitrogen dioxide and formaldehyde with a direct-reading monitor, set against building and household characteristics taken from a questionnaire (class 4)
- Effect
- mean 0.15
- Averaging time
- 24 h
- Sample
- 111 homes
- Flags
- implausible
- Caveat
- 0.15 ppm is about 282 μg/m3, an order of magnitude above what other studies of non-smoking residences report, and NO2 was read with an electrochemical sensor whose stated range is 0 to 500 ppm, so the printed mean sits at the very bottom of that range; taken as printed
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.