Polychlorinated biphenyls

Polychlorinated Biphenyls: A group of toxic, persistent chemicals used in electrical transformers and capacitors for insulating purposes, and in gas pipeline systems as a lubricant. The sale and new use of PCBs were banned by law in 1979.

Polychlorinated biphenyls
see PCBs
Polyelectrolytes
natural or synthetic water-soluble macromolecules that assist in the flocculation of dispersed solids ...

Polychlorinated biphenyls (PCBs): A group of chemicals found in industrial wastes.
Pond: A small natural body of standing fresh water filling a surface depression, usually smaller than a lake.

Polychlorinated Biphenyls (PCBs) - A family of chemical compounds formed by the addition of chlorine to a biphenyl system (a dual-ring structure comprising two benzene rings linked by a single carbon-carbon bond).

polychlorinated biphenyls (PCBs) Highly toxic organic chemicals (once widely used in electrical transformers and other industrial equipment to provide resistance to conduction) known to cause skin diseases and suspected of causing birth ...

Polychlorinated biphenyls (PCBs)
A series of isomers and compounds used mainly as plasticizers, flame retardants and insulating materials. PCBs are potentially toxic and carcinogenic. Toxic effects generally involve damage to the skin and liver.

Polychlorinated biphenyls (PCBs)
A group of toxic chemicals used for a variety of purposes including electrical applications, carbonless copy paper, adhesives, hydraulic fluids, and caulking compounds.

Polychlorinated Biphenyls
A group of synthetic, organic, chlorinated, aromatic hydrocarbons having various industrial applications. They are highly toxic, poisonous and potentially carcinogenic environmental pollutants known to cause skin diseases.

PCBs: Polychlorinated biphenyls.
pCi/l: Pico Curies per liter; a measure of radon concentration.
PELs: Permissible Exposure Limits (standards set by OSHA).

PCB Polychlorinated biphenyls. PCBs are very stable, synthetic oils that don’t break down, even at very high temperature. This made them popular to use in high voltage transformers. Unfortunately, they are highly toxic to fish and birds.

The term can be used to describe organochlorine pesticides such as lindane and DDT, industrial chemicals such as polychlorinated biphenyls (PCB), and chlorine waste products such as dioxins and furans.

Acne-like eruption caused by exposure to certain chlorinated organic substances such as polychlorinated biphenyls or 2,3,7,8-tetrachlorodibenzo-p-dioxin [2,3,7,8-tetrachlorooxanthrene] and other polychlorinated dibenzo dioxins and furans.

PCBs Polychlorinated biphenyls. Found in transformers and capacitors, these organic compounds are very persistent in the environment where they accumulate over time.

Polychlorinated Biphenyls or PCBs Recognized as a persistent organic pollutant, PCBs are a class of organic compounds once widely used as dielectric fluids in transformers, capacitors and coolants.

See also: Air, Environment, Water, Waste, Compounds