Your Ozone Air Purifier Is Poisoning You - air purifier for smoke

Several manufacturers are currently selling ozone generators as air purifiers.
Companies that make these devices say they are safe and effective in controlling indoor air pollution;
For nearly a century, however, health professionals such as the American Lung Association and who have questioned the claims.
Sellers of ozone
The production unit usually describes ozone in some novel terms.
Called in terms such as "activated carbon" or "pure air", this suggests that ozone is only a healthy oxygen.
However, ozone is a toxic gas that has very different chemical and toxicology properties compared to oxygen.
Ozone is a molecule of three oxygen atoms, not two oxygen that we usually breathe.
The O2 molecules are stable and inactive, while the ozone molecules are unstable and tend to disintegrate and produce O2 molecules and single ionised oxygen atoms.
This single atom acts as a "free radical", that is, it reacts with other substances nearby and changes their chemical composition.
It is this ability to combine with other substances that constitutes the basis claimed by the manufacturer that it combines organic particles in the air and removes them from the cycle.
Unfortunately, the same chemical properties that allow ozone to react with organic substances in the environment also enable it to react with similar organic substances in the body, which may have a harmful impact on health.
When inhaled, ozone damages the lungs and is considered a bad substance in the smoke.
Even a low intake of ozone can cause respiratory problems and throat irritation.
In addition, ozone can aggravate chronic respiratory diseases such as asthma and damage the body's natural ability to resist respiratory infections.
A generally accepted theory of aging believes that human cells will age due to genetic factors (
Loss of cells)
And oxidation damage of free radicals.
People are encouraged to eat foods rich in antioxidants, and many take antioxidant supplements precisely to avoid the damage caused by active substances such as ozone.
Most people recover from acute exposure to ozone, but according to a study by 1996 EPA, long-
Long-term exposure may result in permanent lung injury.
EPA regards ozone as an air pollutant and has established air quality standards that enable local officials to warn the public when ozone levels in urban areas exceed the standard. When ozone (
And other air pollutants)
Asthma patients and patients with chronic lung disease are encouraged to stay indoors, and healthy people are told not to perform strenuous outdoor exercise, which increases their breathing speed in toxic air.
Since it is recommended that people avoid ozone in an outdoor environment, it is difficult to understand why someone will buy a device to deliberately produce ozone in their own homes.
The FDA requires that the ozone output of indoor medical devices be less than 0. 05 ppm.
Occupational Safety and Health Administration (OSHA)
The average concentration of ozone exposure for workers is required to not exceed 0.
8 hours 10 ppm.
National Institute of Occupational Safety and Health (NIOSH)
The recommended upper limit is 0.
10 ppm, should not exceed even if short.
The EPA's national environmental air quality standard stipulates that the average concentration of ozone in outdoor air is up to 8 hours, 0. 08 ppm.
EPA created "high-
"Not good nearby" to distinguish between ozone in the upper and lower atmosphere.
The ozone layer in the upper atmosphere is about 10 ~ 50 km (
32,000 to 164,000 feet)
Above the surface of the Earth helps to filter out the destroyed UV solar radiation.
Fluorine-chloride compounds used in refrigerators and coolant systems are destroying this ozone layer.
After negotiations on an international treaty, the Montreal Protocol, starting in 1987, the production of fluorine-containing carbon decreased sharply and completely eliminated by 1996, according to a study by the American Geophysical Union, the rate of ozone destruction in the stratosphere has slowed.
Ozone generators are ineffective in controlling indoor air pollution, as scientific evidence suggests that the potential for ozone removal of indoor air pollutants at concentrations not exceeding public health standards is small, although it still has long-term potential to cause lung stimulation.
The supplier claims that ozone will make almost all chemical pollutants harmless by chemical reaction
The products are carbon dioxide, oxygen and water.
There are several reasons why this is a false advertisement.
First, it takes months to years for ozone to react with many chemicals common in indoor air (Boeniger, 1995);
So this is useless for all practical purposes.
In addition, the ozone generator will not remove carbon monoxide (Salls, 1927;
Xiao Nexi and so on. , 1994)
Or formaldehyde (
Esmild bonigel, 1994).
Secondly, in many cases, the reaction between pollutants and ozone is indeed easy to occur,
The product is as harmful or irritating as the original pollutant (Weschler et al.
1992a, 1992b, 1996;
Zhang, Li, 1994.
For example, a laboratory experiment was conducted to mix ozone with chemicals on the new carpet.
Ozone does reduce a lot of chemicals, including those that produce a "new carpet" smell.
However, the reaction produces a variety of aldehyde, and the total concentration of organic chemicals in the air is actually increased (Weschler, et. al. , 1992b).
The level of the stimulus has also risen (
Zhang, Li, 1994.
Some of the by-products of the ozone reaction are reactive in themselves and will produce further irritation and corrosivenessproducts (
Weschler and Shields, 196,1997 a, 1997 B).
The ozone generation device turns the indoor environment into a boiling chemical bottle.
Third, ozone itself does not remove particles in the air such as pollen and indoor dust.
However, some ozone generators are made with "ion generators" or "ion generators" in the same device to be negatively dispersed (
And/or Yes)
Charged ions in the air.
These ions are attached to the particles in the air, giving them a negative (or positive)
Charge the particles to attach to a nearby surface, such as a wall or furniture, resulting in a poor layer of dirt;
Or connect with each other and settle in the air.
In recent experiments, with efficient particle filters or electrostatic efficiencies, ion generators have been shown to be ineffective in removing dust, tobacco smoke, pollen, or fungal spores. (
Xiao Nexi and so on. , 1994; Pierce, et al. , 1996).
Even at concentrations substantially exceeding public health standards, ozone is ineffective in terms of clean air.
Unfortunately, there is evidence that, in some cases, the device that produces ozone exceeds the tolerable output limit.
Due to the different brands and models of these machines and the different room sizes that end up using them, the final concentration of ozone in the air can change a lot.
In a study, xiaonexi and Altman (1991)
The large ozone generator recommended by the manufacturer for "up to 3,000 square feet" of space is placed in a room of 350 square feet and operates in high settings.
Ozone in the room quickly reached a dangerous level of 0. 50 to 0. 80 ppm, 5-
10 times higher than public health restrictions.
In a study by the 1995 Environmental Protection Agency, in rooms of different sizes, several different ozone generators were tested in the home environment, with doors turned on and off alternately, the fan of the central ventilation system is turned on and off alternately.
The results show that some ozone generators often produce a dangerous concentration of 0 when operating in the sealing chamber with the maximum setting. 20 -0. 30 ppm.
When these devices operate in a smaller environment, the concentration is generally maintained within the public health standard range as the interior doors are opened.
Due to this wide variation in production and concentration, it is impossible for consumers to know how much ozone is actually in the air they breathe;
In many common cases, the ozone generator produces toxic substances.
At least one manufacturer is selling machines equipped with ozone sensors that can turn the machine on and off according to ambient ozone levels, in order to keep this completely unpopular gas in the "safe" range.
EPA is currently testing to assess the reliability of these sensors.
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