NATIONAL AMBIENT AIR QUALITY STANDARDS AND GUIDELINES: A GLOBAL REVIEW

The air quality limits and levels play a key role for effective and useful air quality management. Ambient air quality standards perform as a recommendation for what air pollutions levels are generally safe for most human begins. In this paper, we identify national ambient air quality standards and guidelines for include particulate matter (PM10, PM2.5), sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), lead (Pb), and ozone (O-3) in different countries and organizations. These national ambient air quality standards covered a verity of averaging times and taken from literature reviews and inquiring international official databases.