(BOSTON) -- A flame retardant removed from children's pajamas 30 years ago but now used in polyurethane foam is prevalent in office environments, especially in older buildings, where urine testing of workers turned up widespread evidence of its biomarker, a new study led by Boston University School of Public Health researchers has found.
The study, published in the journal Environment International, found that the chemical known as TDCPP -- chlorinated tris(1,3-dichloro-2-propyl) phosphate, or 'chlorinated tris' -- was present in 99 percent of dust samples taken from participants' homes, vehicles and offices, "demonstrating the widespread presence of this flame retardant in the indoor environment." The research team recruited 31 adults who worked and lived in the Boston area for the testing.
The study found that the office environment was the strongest predictor of metabolized TDCPP in urine, with significantly lower concentrations of the chemical among workers in a new office building than in older buildings. Similarly, the average concentration of TDCPP in dust was significantly lower in the new office building than in the older office buildings.
Urine samples were collected during the workday, which may explain why an association was found between the quickly metabolized chemical and characteristics of the office, rather than the vehicle or home.
"Overall, our findings suggest that exposure to TDCPP in the work environment is one of the contributors to the personal exposure for office workers. Further research is needed to confirm specific exposure sources (e.g., polyurethane foam), determine the importance of exposure in other microenvironments such as homes and vehicles, and address the inhalation and dermal exposure pathways," the research team concluded.
TDCPP, an additive to polyurethane foam used in upholstered furniture, is found in dust, where it can likely lead to human exposure. Potential health effects remain a concer
|Contact: Lisa Chedekel|
Boston University Medical Center