Navigation Links
Potentially toxic flame retardants found in many US couches
Date:11/28/2012

DURHAM, N.C. -- More than half of all couches tested in a Duke University-led study contained potentially toxic or untested chemical flame retardants that may pose risks to human health.

Among the chemicals detected was "Tris," a chlorinated flame retardant that is considered a probable human carcinogen based on animal studies.

"Tris was phased out from use in baby pajamas back in 1977 because of its health risks, but it still showed up in 41 percent of the couch foam samples we tested," said Heather Stapleton, associate professor of environmental chemistry at Duke's Nicholas School of the Environment.

More manufacturers in recent years are treating their couches' foam padding with chemical flame retardants to adhere to California Technical Bulletin 117 (TB 117), she said. TB 177 requires all residential furniture sold in California to withstand a 12-second exposure to a small open flame without igniting, to help reduce deaths and injuries from accidental home fires. Over the years, the statewide standard essentially has become a de facto national standard, due to the economic importance of the California market.

In many cases, the manufacturer may not know what chemicals have been used. Most manufacturers buy their foam padding from a vendor who, in turn, buys the chemicals used to treat it from another vendor. The identity of the chemical flame retardants often gets lost along the way, or is protected under law as proprietary.

Stapleton and her colleagues analyzed 102 polyurethane foam samples from couches purchased for home use in the United States between 1985 and 2010. They published their findings in a peer-reviewed study released Wednesday in the journal Environmental Science & Technology.

In addition to finding Tris, the tests revealed that 17 percent of the foam samples contained the flame-retardant pentaBDE, which is banned in 172 countries and 12 U.S. states and was voluntarily phased out by U.S manufacturers in 2005.

PentaBDEs are long-lasting chemicals that over time migrate into the environment and accumulate in living organisms. Studies show they can disrupt endocrine activity and affect thyroid regulation and brain development. Early exposure to them has been linked to low birth weight, lowered IQ and impaired motor and behavioral development in children.

PentaBDE and Tris were the only flame retardants found in couches purchased before 2005. After 2005, Tris was the most common flame retardant found. In addition, Stapleton and her colleagues identified two new flame-retardant chemical mixtures in more recently purchases couches for which there is little or no health data available.

"Overall, we detected flame-retardant chemicals in 85 percent of the couches we tested and in 94 percent of those purchased after 2005," Stapleton said. "More than half of all samples, regardless of the age of the couch, contained flame retardants that are potentially toxic or have undergone little or no independent testing for human health risks."

"If a couch has a California TB 117 label, you can all but guarantee it contains chemical flame retardants," Stapleton said. "But this is where labeling requirements get confusing: the lack of a TB 117 label on a couch does not guarantee the absence of chemical flame retardants. It's not that cut-and-dried."

Stapleton said that so many new proprietary chemical flame retardants have been introduced in recent years that it has become very difficult for scientists to identify them all or determine their presence consumer products.


'/>"/>

Contact: Tim Lucas
tdlucas@duke.edu
919-613-8084
Duke University
Source:Eurekalert

Related biology news :

1. Folic acid food enrichment potentially protective against childhood cancers
2. Effects of environmental toxicants reach down through generations
3. A toxic menu
4. Dip chip technology tests toxicity on the go
5. Using graphene, scientists develop a less toxic way to rust-proof steel
6. Boosting blood system protein complex protects against radiation toxicity
7. Lab-on-a-chip detects trace levels of toxic vapors in homes near Utah Air Force Base
8. Ions, not particles, make silver toxic to bacteria
9. Specific toxic byproduct of heat-processed food may lead to increased body weight and diabetes
10. Super-strong, high-tech material found to be toxic to aquatic animals
11. University of Tennessee Team receives NSF support to study toxic water in China
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2016)... , April 27, 2016 ... the  "Global Multi-modal Biometrics Market 2016-2020"  report to ... ) , The analysts forecast the ... CAGR of 15.49% during the period 2016-2020.  ... number of sectors such as the healthcare, BFSI, ...
(Date:4/15/2016)... 15, 2016  A new partnership announced today ... underwriting decisions in a fraction of the time ... and high-value life insurance policies to consumers without ... With Force Diagnostics, rapid testing (A1C, Cotinine and ... (blood pressure, weight, pulse, BMI, and activity data) ...
(Date:4/14/2016)... , April 14, 2016 ... and Malware Detection, today announced the appointment of ... the new role. Goldwerger,s leadership appointment comes ... the heels of the deployment of its platform at ... behavioral biometric technology, which discerns unique cognitive and physiological ...
Breaking Biology News(10 mins):
(Date:6/24/2016)... Brooklyn, NY (PRWEB) , ... June 24, 2016 , ... ... 15mm, machines such as the Cary 5000 and the 6000i models are higher end ... height is the height of the spectrophotometer’s light beam from the bottom of the ...
(Date:6/23/2016)... , ... June 23, 2016 , ... ... pleased to announce the launch of their brand, UP4™ Probiotics, into Target stores ... 35 years, is proud to add Target to its list of well-respected retailers. ...
(Date:6/23/2016)... A person commits a crime, and the detective ... the criminal down. An outbreak of foodborne illness ... (FDA) uses DNA evidence to track down the bacteria that ... It,s not. The FDA has increasingly used a complex, cutting-edge ... illnesses. Put as simply as possible, whole genome sequencing is ...
(Date:6/23/2016)... MONICA, Calif. , June 23, 2016  The Prostate Cancer Foundation ... pioneer increasingly precise treatments and faster cures for prostate cancer. Members of the ... institutions across 15 countries. Read More About the Class ... ... ...
Breaking Biology Technology: