Nitrogen dioxide (NO2) is the main air pollutant from motor vehicle exhaust. Prolonged exposure to the high concentration of NO2 can cause respiratory problem.
Diffusion Tube Action aims to collect air sample and find out the roadside pollution level. It is an effective and a more affordable tool for measuring the public exposure to NO2.
The measurements can be taken simultaneously at multiple locations in the Central area for 2 weeks. We would like to find out if there are any changes in air quality when the working from home polices have been implemented by many corporations recently。