Química Nova ()
Retardantes de chama bromados: uma revisão
Abstract
Polybrominated diphenyl ethers (PBDEs), Polybrominated biphenyls (PBBs), Hexabromocyclododecane (HBCD) and Tetrabromobisphenol A (TBBP-A) are flame retardant widely used in plastics, textiles, furniture, consumer electronics, automobiles, among others.They are important components added to retard the spread of flame and, thus,mitigate deaths and destruction caused by fires. However, environmental studies conducted in several places show that these compounds exhibit toxic effects. In addition, some are resistant to degradation, persistant in the environment, bioaccumulate and biomagnify in biota, which have worried the scientific community and government agencies. Therefore, production and use of some brominated flame retardants is being restricted and / or prohibited in many countries and some have recently been listed in the Annexs of Stockholm Convention as Persistent Organic Pollutants (POPs). Thus, a review of their use, production, legislation and environmental occurrence is presented, as well as a brief introduction to the new generation of flame retardants.
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