TUESDAY, Dec. 20 (HealthDay News) -- Increasing concentrations of two newer era flame-retardant chemicals were rescued in atmospheric samples collected in a Great Lakes segment between 2008 and 2010, a new investigate indicates.
The chemicals are used to revoke flammability in several products, including electronic devices, textiles, plastics, coatings and polyurethane foams. They are 2-ethylhexyl tetrabromobenzoate [TBB] and bis(2-ethylhexyl) tetrabromophthalate [TBPH].
TBB and TBPH are enclosed in blurb mixtures introduced in new years to reinstate polybrominated diphenyl ethers (PBDEs), widely used fire retardants taken off a marketplace since they can trickle from products into the environment.
In this study, Indiana University researchers analyzed 507 atmosphere samples collected during 6 locations on a shores of a Great Lakes.
"We find that a environmental concentrations of (TBB and TBPH) are increasing rather rapidly," Professor Ronald Hites, of a School of Public and Environmental Affairs, pronounced in a university news release. "It's rare to find that concentrations of any devalue are doubling within a year or two, that is what we're saying with TBB and TBPH."
The top concentrations were rescued in civic areas, including Cleveland and Chicago. But a chemicals were also benefaction in about half the samples from remote locations in Michigan, New York and Ontario, Canada.
The findings, published in a biography Environmental Science & Technology, advise that these newer-generation flame retardants might be replacing their predecessors in a environment, a researchers said.
Previous investigate has found TBB and TBPH in domicile dirt and furniture froth in a United States, sea mammals in Hong Kong and sewage sludge in California.
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News referensi http://news.yahoo.com/buildup-newer-flame-retardants-concerns-scientists-190408884.html
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