Abstract

Air quality represents a worldwide concern, with consequences not only for the health of those exposed to the polluted environments, but also to the future of global economic development. Actual trends, showing a mounting population and increased urbanization, have led governments to enact and enforce legislation that is more comprehensive and stringent. Air quality is a very relevant issue, both outdoor and indoor, where progressively more time is spent at home, transportation, work, and leisure activities. The sources and types of air pollution vary widely for each location, and the air quality surveillance and enforcement may be under the responsibility of different agencies, including those in charge of the environment, health, occupational and labor, etc., leading to very diverse guidelines and regulations