Mercury Pollution Is a Danger To Us & Our Environment

What's in a lamp? A fluorescent lamp consists of a glass shell, a high vacuum, a small amount of liquid mercury and evaporated mercury, some phosphor powder, and the metal end-caps and heated filaments.

Fluorescent light is produced by passing an electric current through mercury vapor, which generates ultraviolet energy. A phosphor coating on the inside of the bulb transforms the ultraviolet energy into visible light. A single four- foot fluorescent tube contains from 5 to 50 mg. of mercury.

When lamps are sent to landfills, or especially when incineration is used as an alternative disposal method, mercury vapors are released that can travel over 200 miles! It is highly toxic to the human nervous system and particularly poisonous to the kidneys. Once absorbed by the body, mercury is distributed by the blood to all tissues of the human body, and it easily crosses the placental barrier; prenatal exposure can lead to a variety of health problems including a severe form of cerebral palsy.

• Each year, an estimated 600 million fluorescent lamps are disposed of in U.S. landfills amounting to 30,000 pounds of mercury waste.
• The Environmental Protection Agency reports that 187 incinerators nationwide emit approximately 70,000 total pounds of mercury into the environment each year.
• In 1992, mercury-containing lamps were added to the United States' Environmental Protection Agency's (EPA) list of hazardous substances. (The EPA's regulatory threshold of 2 mg./liter is usually exceeded by mercury-containing lamps).
• Mercury was number three on the 1997 list of hazardous substances as outlined by the Agency for Toxic Substances and Disease Registry (ATSDR) and the EPA.