Air Pollution Indoor Air Pollution

Questions 1. Some scientists claim that indoor pollution is more fatal than outdoor pollution, what about indoor pollution makes this a valid claim? 2. Based on your understanding of indoor and outdoor, do you agree?

Pathways, Processes and Driving Forces Chimney Effect (Stack Effect) Process whereby warmer air rises in buildings to upper levels and is replaced in the lower portion of the building by outdoor air drawn through a variety of openings, such as windows doors or cracks in the foundation or walls

Sick Building Syndrome A condition associated with an indoor environment that appears to be unhealthy The symptoms people report cannot be traced to any one particular cause

Environmental Tobacco Smoke Secondhand smoke 2 sources Smoke exhaled by smokers Smoke emitted from burning tobacco The most hazardous indoor pollutant

Questions 1. Please explain why radon is a problem. 2 Questions 1. Please explain why radon is a problem? 2. Is radon a large hazard? If so why? If not, why?

Radon Gas Radon Health hazard when leaked into homes Naturally occurring radioactive gas Colorless, odorless, tasteless Only identified through proper testing Health hazard when leaked into homes Exposure is associated with lung cancer

How Radon Enters Houses Please read page 574 and explain how radon enters houses.

Major Indoor Pollutants 1, 1, 1-Trichloroethane Aerosol sprays Dizziness, breathing irregularities Asbestos Pipe insulation, ceilings, floor tiles, oven mitts Lung Cancer and asbestosis Benzo-a- pyrene Tobacco smoke, woodstoves Lung Cancer Carbon Monoxide Faulty furnaces, cigarette smoke Headache, heartbeat irregularities, death, CO has 250x affinity for Hb than O2

Major Indoor Pollutants Continued… Chloroform Pulp and paper mills, water and wastewater plants Cancer Formaldehyde Paneling, particle board, furniture, carpeting, adhesives Nausea, dizziness, irritation of throat, eyes, and lungs Methylene chloride Paint strippers and thinner – persistent Nerve disorders, diabetes Nitrogen oxides Furnaces, stoves, fireplaces and vents Headaches, irritated lungs Para-dichlorobenzene Air fresheners, mothballs

Major Indoor Pollutants Continued… Radon – 22 Soil and rock near house foundation, concrete Lung cancer Styrene Carpets, plastics, Kidney and liver damage Tetrachlor- ethylene Dry-cleaning fluid Nerve disorders, damage to liver and kidneys, cancer Tobacco Smoke Cigarettes and other smoking sources Lung cancer and heart disease Organic Material Dust mites, fungal and algal spores, dust (human skin), animal dander, hair, carpet fibers, fur Allergies, coughs, sneezing, eye irritation, sore throats, difficulty breathing http://www.metricmind.com/ac_honda/main.htm