Concerning Indoor Air
Are You Aware:
All of us face a variety of risks to our health as we go about our day to day lives.
Driving in cars, flying in planes, engaging in recreational activities, and being exposed
to environmental pollutants all pose varying degrees of risk. Some risks are simply
unavoidable. Some we choose to accept because to do otherwise would restrict our ability
to lead our lives the way we want. Indoor air pollution is one risk that you can do
something about. In the last several years, a growing body of scientific evidence has
indicated that the air within homes and other buildings can be more seriously polluted
than the outdoor air in even the largest and most industrialized cities. Other research
indicates that people spend approximately 90 percent of their time indoors. Thus, for many
people, the risks to health may be greater due to exposure to air pollution indoors than
pollutants outdoors. In addition, people who may be exposed to indoor air pollutants for
the longest periods of time are often those most susceptible to the effects of indoor air
pollution. Such groups include the young, the elderly, and the chronically ill, especially
those suffering from respiratory conditions.
Some Sources of
purification has been utilized in:
Todays weather tight homes trap pollutants inside where everyday household contaminants become increasingly concentrated. The result: indoor air can be up to twenty times more polluted than the air outdoors, jeopardizing the health and vitality of your family.
What is Ozone?
Ozone (O3), a 3-atom form of oxygen, is a normal trace
element in the earths atmosphere. Ozone is a different chemical than common oxygen
(O2) which supports life on our planet. Like many substances, ozone is beneficial to life
and to man, but can also be harmful in excessive concentrations.
Ozone is created naturally by the action of the sun on oxygen; it also is created by man as a by-product of processes such as combustion, power generation and operation of common appliances such as sun lamps, copy machines or electric hair dryers.
What about ozone in the air we breathe?
Traces (small quantities) of ozone from the earths
upper atmosphere are carried to the earths surface by winds and down-drafts. With no
intervention by man, ozone in the outdoor air we breathe would vary in concentrations
between .000 and .030 parts per million (PPM).
In most cities higher levels of ozone are created primarily due to automobile exhaust and resulting photochemical reactions. During "smog alerts", these levels can be irritating or even harmful to people. Indoor ozone concentrations will almost always be much lower than outdoors; this is why people with respiratory illness are advised to remain indoors during smog alerts. In a typical home or building, ozone levels of .000 to .030 PPM would be found, when the outdoor level is .000 to .150 PPM.
Many appliances such as hairdryers, mixers or electric fans actually produce very small concentrations of ozone when they are running. This occurs as a result of electrical discharge exciting oxygen (O2) into ozone (O3). Again, because ozone breaks down very quickly into oxygen and because such low levels are produced, even with several appliances in operation typical ozone concentrations found in homes and buildings will not be increased beyond a low, background level.
Comparing Air Filter Efficiency
An air cleaner is a significant investment in an appliance that should provide a consistent and reliable performance over the long term. Before you make the decision as to which air cleaner you buy, you should understand:
Government Agencies Rate INDOOR AIR POLLUTION as the Nation's biggest pollution problem
|Tightly Constructed Buildings Don't
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