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Article: Air and Water Purification, Security Issues
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- Encyclopedia of Espionage, Intelligence, andSecurity
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Copyright informationCOPYRIGHT 2004 The Gale Group Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Air and Water Purification, Security Issues
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BRIAN HOYLE
Both water and air are particularly vulnerable to contamination by some bacteria and protozoa, and by their toxic products. Chemicals can also be dispersed in water and by
air. A recent example occurred in 1995, when the Japanese cult Aum Shinrikyo released sarin gas into the Tokyo subway system. The poisonous gas attack killed 12 people and sickened 5,000.
Technologies exist to kill the microorganisms that might be present (disinfection) or to completely remove the microbes and chemicals from the air or water (purification). These technologies, however, are usually designed to remove naturally occurring or ...
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