(Science Daily) Researchers detected 43 different types of flame retardants and found the composition of flame retardants varied from space to space based on the flammability standard the different schools followed. Overall, flame retardant levels were significantly higher in spaces with outdated furniture meeting TB117 and/or TB133 than in spaces meeting the newer TB117-2013 standard.
In older TB133 classrooms, levels of a phased-out flame retardant and its replacement (BDE 209 and DBDPE) were three and eight times higher, respectively, than the highest levels previously reported in indoor spaces in the United States. That report came from an earlier study by Silent Spring that looked at dust in college dorm rooms.
The team also detected the carcinogen TDCIPP and a structurally similar flame retardant called TCIPP in rooms meeting the newer standard, likely due to the chemicals' widespread use in many other materials such as plastics, rubber, and textiles.
"This is an important study and the first to evaluate the impact of the new TB117-2013 standard on flame retardant levels in dust," says Arlene Blum, executive director of the Green Science Policy Institute. "It shows that updating an obscure fire standard leads to lower levels of harmful flame retardants and healthier indoor spaces."
In older TB133 classrooms, levels of a phased-out flame retardant and its replacement (BDE 209 and DBDPE) were three and eight times higher, respectively, than the highest levels previously reported in indoor spaces in the United States. That report came from an earlier study by Silent Spring that looked at dust in college dorm rooms.
The team also detected the carcinogen TDCIPP and a structurally similar flame retardant called TCIPP in rooms meeting the newer standard, likely due to the chemicals' widespread use in many other materials such as plastics, rubber, and textiles.
"This is an important study and the first to evaluate the impact of the new TB117-2013 standard on flame retardant levels in dust," says Arlene Blum, executive director of the Green Science Policy Institute. "It shows that updating an obscure fire standard leads to lower levels of harmful flame retardants and healthier indoor spaces."
