Where are the sources of indoor air pollutants?
Indoor air pollutants can be present in different forms. Here are some of the major sources of indoor air pollutants in our homes : • Formaldehyde (HCHO) Common sources are plywood panelling, adhesives, carpet backing, upholstery, drapery fabric as well as cigarette smoke. Health effects include headaches, dizziness, lethargy, rashes, nausea, asthma attacks and irritation of the eyes and upper respiratory tract. Prolonged exposure at high levels may be related to nasal cancer. • Asbestos Common sources are roofing and flooring materials, wall and pipe insulations, cement and coating materials. Is released only when the asbestos-materials are disturbed or disintegrate over time. Health effects include scarring of the lungs and even cancer, as these microfibers can remain trapped in the respiratory system for years. • Biological Pollutants Common sources are improperly maintained air-conditioners, humidifiers, plants, pets and pests. Microscopic dust mites are a very important source of
