Đốt, tạo ra chất gây ô nhiễm Không gian trong nhà thường bị ô nhiễm với các chất kết quả từ quá trình đốt cháy. Điều này đã được các trường hợp kể từ khi con người phát hiện ra tiện ích của lửa và cố gắng sử dụng nó theo mức độ kiểm soát khác nhau của để nấu thức ăn và cung cấp các điều kiện sống ấm trong môi trường lạnh. Nếu nhiên liệu và vật liệu sử dụng trong các quá trình đốt cháy được tự do của chất gây ô nhiễm và quá trình đốt cháy. | chapter three Combustion-generated contaminants Indoor spaces are commonly contaminated with substances that result from combustion. This has been the case since humans discovered the utility of fire and attempted to use it under various levels of control to cook food and provide warm living conditions in cold environments. If fuels and materials used in combustion processes were free of contaminants and combustion were complete emissions would be limited to carbon dioxide CO2 water vapor H2O and high-temperature reaction products formed from atmospheric nitrogen and oxygen NOx . However fuels and other combusted materials . tobacco are never free of contaminants. Also combustion conditions are rarely optimal as a consequence combustion is usually incomplete. When burned fuels such as natural gas propane kerosene fuel oil coal coke charcoal wood and gasoline and materials such as tobacco candles and incense produce a wide variety of air contaminants. Some of these are generic to combustion while others are unique to materials being combusted. Substances produced in most combustion reactions include CO2 H2O carbon monoxide CO nitrogen oxides NOx such as nitric oxide NO and nitrogen dioxide NO2 respirable particles RSP aldehydes such as formaldehyde HCHO and acetaldehyde and a variety of volatile organic compounds VOCs fuels and materials that contain sulfur will produce sulfur dioxide SO2 . Particulate-phase emissions may include tar and nicotine from tobacco creosote from wood inorganic carbon and polycyclic aromatic hydrocarbons PAHs . Sources of combustion-generated pollutants in indoor environments are many. In highly developed countries they include emissions from 1 a variety of vented and unvented combustion appliances 2 motor vehicles which may move from an outdoor ambient to an indoor environment and 3 fuel-powered machinery such as floor burnishers forklifts and 2001 by CRC Press LLC Zambonis used in a number of indoor environments. They also include .
