About Negative Ions/
Air Ionizers

Research Studies and Facts

Negative ions have proven to be safe and effective in a variety of studies. They enhance the efficiency of air filters, and attack airborne particles and pollutants wherever they may be floating.


Negative Ion Studies
How Negative Ions Purify the Air


Studies Proving the Effectiveness of Negative Ions

U.S. Dept. of Agriculture

The U.S.D.A. discovered the following in recent studies conducted in a poultry house, which are notoriously polluted:

  • Reduced salmonella (bacteria) transmission between chicks by 98%.
  • Reduced airborne salmonella (bacteria) by 95%.
  • Reduced airborne dust & particles by 99% in 60 seconds.

(Summary of Study from USDA Website)

Journal of Hygiene
This scientific publication reports that negative ions cause dust particles to agglomerate and settle out of air. For this same reason, ionization can improve the efficiency of filters.

Good Housekeeping Magazine
In March of 1999, Good Housekeeping Magazine had its engineers test an ionizer by using a smoke test, and found that it cleared out the smoke in a tank.

Journal of Hygiene
Scientists showed that ionization reduced bacterial levels in burns and plastic surgery units by over 96% after a two week period, which results in much better and more rapid healing of patients.

Columbia University
Researchers found people with winter and chronic depression show that negative ion generators relieve depression as much as antidepressants. It was also determined that there are relatively no side effects.

European Respiratory Journal
A statistically significant decrease of carbon monoxide values was found with an ionizer activated. This was discovered by researchers at Brompton Hospital in London, and published in European Respiratory Journal.

Journal of Applied Microbiology
The use of negative ions was even found by scientists to reduce the presence of airborne viruses by about 40%. A study featured in the 1987 issue also showed the negative ions are free from any adverse side effects.

St. James University Hospital
Researchers have found that hospital-acquired infections among patients in the Intensive Care Unit were dramatically reduced when ionizers were introduced - and have remained so since. The ionizers were found to successfully remove bacteria from air, reducing the transmission of infection.

Science
A 1976 study featured in this publication provided evidence that negative ions can have a biologically lethal effect on airborne microorganisms.

Journal of Hygiene
A 1979 study found that using negative ionization in the air protected chickens from airborne infection of the deadly Newcastle Disease Virus.

Journal of Food Protection
A 2001 study found that airborne negative ionization was highly effective at destroying airborne and surface salmonella.

University of Medicine and Pharmacy (Romania)
A test on male rats showed that just moderate levels of negative ions increased the resistance of the rats, reducing or eliminating the effect of some chemicals.
(Summary of Study)

Effect of Negative Ions on Drivers
A study by Toyota Central R & D Labs, Inc. found that negative ions can improve fatigue and cognition of drivers. (Copy of Study - PDF File)

Other Negative Ion Studies:

Penn State University Graduate School of Architectural Engineering & Dept. of Biology

"Negative Air Ions Stimulate Mitochondria" Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, Russia.


How Negative Ions Purify the Air

How negative ion generator/air ionizer purifies the air

Virtually all particles in the air have a positive charge, while negative ions have a negative charge. In which case, negative ions and particles magnetically attract to one another. When there is a high enough concentration of negative ions in the air, they will attract to floating particles in large numbers. This causes the particle to become too heavy to remain airborne. As a result, the particle will fall out of the air, preventing it from being inhaled into the respiratory tract where it can trigger breathing and health problems.

The ionized particle will then be collected by normal cleaning activities, such as vacuuming or dusting. If the particle happens to be kicked back up into the air again, it will be ionized, and quickly settled out of the air once again.

In nature, negative ions are generated by processes such as sunlight, lightening, waves from the ocean, and from waterfalls. "Concrete Jungles" minimize the natural production of negative ions by disrupting the delicate electrical balance between the atmosphere and the earth. Ionizer/ionic air purifiers recreate them with electrode pins ("needlepoints") to electrically produce negative ions. This method produces a density that is many times higher than the negative ion level found at Niagara Falls, the highest natural producer of negative ions and one of the healthiest environments in the world.


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