polybrominated diphenyl ethers


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polybrominated diphenyl ethers

(pōl″ē-brōm′ĭ-nāt″ĕd),

PBDE

A class of chemicals used as flame retardants. They are chemically related to polychlorinated biphenyls and are thought to have similar biological toxicity. They have been found in streams, marine animals, human fetuses, and human breast milk.
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Effects of polybrominated diphenyl ethers on basal and TCDD-induced ethoxyresorufin activity and cytochrome P450-1A1 expression in MCF-7, HepG2, and H4IIE cells.
The RoHS directive provides that electrical and electronic equipment sold in the EU after the deadline cannot contain significant amounts of lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB) or polybrominated diphenyl ethers (PBDE) except where technically exempted by the directive.
Polybrominated diphenyl ethers (PBDEs), used extensively in the past, are now considered to be ubiquitous environmental contaminants.
CEC has developed a new line of printed circuit boards that comply with European Union Directive 2002/95/EC which places restrictions on the use of hazardous substances including lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), and polybrominated diphenyl ethers (PBDE) in electronic equipment.
Polybrominated diphenyl ethers (PBDEs) are flame retardants that have been used extensively in consumer products since the 1970s in three technical mixtures (penta-, octa-, and decabromo diphenyl ethers) (Besis and Samara 2012; Hale et al.
The toxic compounds are known as polybrominated diphenyl ethers (PBDEs), a subgroup of brominated flame retardants that are combined into foam, textiles and electronics to raise the temperature at which the products will burn.
These are Manganese, a chemical present in drinking water, dichlorodiphenyltrichloroethane (DDT), chlorpyrifos, tetrachloroethylene (PERC), Polybrominated Diphenyl Ethers (PBDE) and fluoride, present in toothpaste, which is safe to use except for children below two years of age.
The flame retardant properties are achieved using innovative technology without the need for polybrominated diphenyl ethers, hexabromocyclododecane additives or other brominated compounds.
Among the topics are spatial and temporal trends of polybrominated diphenyl ethers, the environmental contamination status of polychlorinated biphenyls in China, chlorinated hydrocarbons in animal tissues and products of animal origin from Poland, contamination profiles and temporal trends of POC in oysters from the Gulf of Mexico, and the contamination profile and temporal trends of persistent organic pollutants in Antarctic biota.
Although not often studied, polybrominated diphenyl ethers (PBDEs) have made it into the headlines recently due to serious health concerns.
In an excerpt from his book Experimental Man, David Ewing Duncan describes his encounters with polybrominated diphenyl ethers (PBDEs), one of the environmental toxins in the public consciousness in recent years.
The other four chemicals--lindane, two forms of polybrominated diphenyl ethers (PBDEs), and perfluorooctanyl sulfonate (PFOS)--will be phased out with various exemptions.