Indoor Air Pollution

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People & the Physical Environment Short Paper Assignment Indoor Air Pollution in Hong Kong Introduction Air pollution has been a major concern in Hong Kong for years. While we usually regard air pollution as being outdoors, in fact the air quality in our house and office could be even worse. Indoor air pollution is the degradation of indoor air quality by harmful chemicals and other materials. Together with urban air quality, it is listed as one of the world's worst pollution problems in the 2008 Blacksmith Institute World's Worst Polluted Places report. This short paper will give you a brief introduction of indoor air pollution, and would cover the common indoor air pollutants in Hong Kong, their health effects and the possible ways to avoid them. Why is Indoor Air Pollution important? We spend most of our time sleeping at home, working in the office or doing other things indoors. Research shows that we generally spend more than 70% of our time in indoor environments. At home, poor indoor air quality adds to general discomfort of living, while in the work place, indoor air pollution may lower productivity and increase absenteeism. What is more, poor indoor air quality can lead to much health problems, for instance itchy eyes, headaches, respiratory difficulties, skin problems, nausea and fatigue. Some exposures such as radon can even lead to cancer after many years. Good indoor air quality is therefore extremely important. Factors Contributing to Indoor Air Quality Indoor air quality is constantly being affected by complex factors that affect the types, levels and importance of indoor air pollutants. These factors include: sources of pollutants, occupant’s perception, building design, ventilation, temperature, humidity and recent activities in the building. For example, renovation work would greatly increase indoor air pollution. The Common Indoor Air
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