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Interior Air Pollutant First of all what is an interior air pollutant? A substance which contaminates the environment around us (earth, air or water). The majority of these substances when in concentrated amounts or high levels become hazardous to human health, yet in smaller amounts they may not be classed as a pollutant. The key is too much of one thing is a pollutant. Substances are broken down into two basic categories; natural and artificial. Natural examples are methane or carbon dioxide and artificial examples would be man-made such as VOC emissions from plastic manufacturing and carbon dioxide created artificially during car engine combustion. Sources of interior air pollution Combustion air pollutants How cigarette smoke is a contribution to interior air pollution Cigarette smoke is an indoor air pollutant which has damaging health consequences for the smoker and anyone inhaling smoke passively (including animals). Cigarette smoke is one of the major causes of lung cancer and increases the chances of strokes and heart attacks. Respiratory conditions may also be triggered in adults and children. Around 4500 chemicals are released into the air with every cigarette including nicotine and benzene. The most concentrated levels of chemicals are found in the smoke around the end of the lit cigarette. Car engines create emissions which can make their way into your home through vents, windows, doors and other openings. The risk of these coming into your home is increased if any openings are facing a road or close to your and your neighbour’s garage. Poorly maintained, poorly vented, inefficient usage and malfunctioning gas ranges, gas stoves, wood stoves gas space heaters, kerosene space heaters and fireplaces will release the following pollutants; carbon monoxide, sulphur dioxide, nitrogen, nitrogen dioxide, hydrocarbons and particulates. Depending on the concentration levels these substances are irritants and will have negative health consequences. Some are potentially lethal, especially through inhalation effecting your respiration system. Biological Air Pollutants The dangers of biological indoor air pollutants - know the contributing factors and how to lower the risk Types of biological pollutants are mildew, mould, viruses, bacteria, fungi, spores, dust mites and pollen contaminants. They are carried through your home by you, your family, your friends and your pet animals. These pollutants are found in areas with stagnant water, humidity and where moisture is present. Typical locations would be heating systems, air conditioning systems/ducts, humidifiers and dehumidifiers. Poor insulation and poorly vented/ventilated bathrooms, kitchens and WCs can be effected too – anywhere water is left to collect such as flooring. Causes range from leaks, condensation, animals, insects, birds (urine and dander) to water damage. These biological pollutants eoncourage strep (streptococcus bacteria) and staph (staphylococcal bacteria) infections to breed. The main health effects are respiratory conditions, asthma, raised temperature, dizziness, feeling lethargic, eye/nasal irritation and aching muscles. Volatile Organic Compounds (VOCs) Please read my article on VOCs for a detailed insight into these toxic airborne substances found in building materials and household products. Heavy Metal Pollutants Heavy metals are elements with high atomic weights. Typical heavy metals are lead, mercury, cadium, zinc, chromium and arsenic. Even at minute or low concentration levels these elements can be extremely hazardous to human and animal health. They are found in car engine emissions, pre 1990 latex painted surfaces and pre 1978 lead painted surfaces. New buildings are not of high risk from exposure, however older properties which have not been renovated have a higher risk. Each type of interior air pollutant is potentially hazardous to you and your family's health and wellbeing. It is important to know the risks, what the pollutants are and how to reduce the levels in your own home. Copyright © 2011 - Holistic-Interior-Designs.com - All Rights Reserved.