Air Quality Investigation at Schools in Hong Kong

Indoor CO2 concentrations exceeded the ASHRAE standard due to overcrowded classrooms and inadequate ventilation. Implementation of more breaks and recesses between classes might alleviate the high level of CO2. The occupancy of classrooms in Hong Kong often exceeded the maximum occupancy of the ASHRAE 62-1989 standard. Decreasing the number of students in each classroom can also lower the CO2 level. Increase the rate of ventilation could remove the accumulated CO2; for example, the use of ceiling fans, exhaust fans could increase the exchange of indoor air with the outdoor.

Air Pollution Infographics Collection – Health Effects

The Health Effects of Air Pollution a collection of infographics get a couple tools to find out PM2.5 MonitorTVOC Monitor ; Indoor air pollution asthmatic impacts in North America Statistics in 2003 Indoor Air Quality and Your Health: Facts, Problems, Factors and...

How Carcinogen Radioactive Radon Gas is Monitor Indoor

Radon is found to be the second most common reason for lung cancer (after smoking). Since radon can easily be trapped inside buildings, indoor radon concentrations can increase to many times that of outdoor levels. When radon gas decays, it emits radioactive radiation in the form of an alpha particle/waves.