Air and applied aspects to health Air Pollution

Air and applied aspects to health Air Pollution Climate Change

Air �What is the composition? �How is air rendered impure? �What are the cleansing mechanisms?

Air of an occupied room �Chemical changes �Physical changes a. Rise in temperature b. Increase of humidity c. Decrease in air movement d. Body odours e. Bacterial pollution

Indices of thermal comfort �Air Temperature and Humidity �Cooling Power �Effective Temperature �Corrected Effective Temperature �Mc. Ardle's Maximum Allowable Sweat Rate - P 4 SR

Corrected effective temperature deg C 1. Pleasant and cool 2. Comfortable and cool 3. Comfortable 4. Hot and uncomfortable 5. Extremely hot 6. Intolerably hot 1. Comfort zone 2. Just tolerable 3. Intolerable 20 20 -25 25 -27 27 -28 28+ 30+ Predicted four-hour sweat rate (P 4 SR) 1 - 3 litres 3 - 4. 5 litres 4. 5 + litres

Air Pollution

Effects of Air Pollution �Health effects �Social and Economic aspects

Protecting Health from Climate Change World Health Day theme 2008

Monitoring of air pollution �Sulphur dioxide �Smoke or soiling index �Grit and smoke measurement �Coefficient of haze �Air pollution index

Prevention and Control �Containment – enclosures, arresters �Replacement �Dilution �Legislation �International Action

Disinfection of Air �Mechanical ventilation �Ultraviolet radiation �Chemical mists �Dust control