Saturday , January 16 2021

Respect for the environment & # 39; Flame Retardant can degrade its compounds with less safety


To reduce the risk of fire, many daily products, construction materials in clothing furniture, fire retardants. In recent years, some of these compounds have been shown to be harmful to the environment, replacing more ecological alternatives. However, a new study in the ACS magazine Environmental Science and Technology, indicates that a heat or ultraviolet light prevents a "safe" fire resin from harmful harmful compounds.

Some brominated flame retardants, such as hexabromocyclododecane (HBCD), continue in the environment and bioaccumulate to have toxic effects on organisms. As a result, some international regulatory bodies have banned HBCD, which is used in the insulation of polystyrene foam. HBCD, a polymeric retardant flame retardant (polFR), is a large polymer that does not penetrate the cells and accumulate in the food chain. Although the use of polymerization is respected by the burning environment of the fire, chemistry's long-term behavior is unknown. So, Christoph Koch, Bernd Sures and colleagues examined the light on light or ultraviolet light, which used the product's isolation after opening at the heat port or landfill.

To simulate the different environmental conditions of the polymer, they can be found throughout their lives, by analyzing samples of the flame retardant powder (140 F) or samples of ultraviolet light (140 F) and mass spectrometry. When researchers released 3 million ultraviolet light, 75 degradation products were found, including 8 brominals. On the contrary, 36 weeks of thermal treatment only produced seven degradation products, one of them was a joke. Because some of the detected compounds are small and brominated, the researchers say they are potentially harmful. When polymerization is combined with polystyrene, polymerization is called a polymerase.

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