By a News Reporter-Staff News Editor at Ecology, Environment & Conservation -- A new study on Environmental Science and Technology is now available. According to news reporting originating in Gloucester Point, Virginia, by VerticalNews journalists, research stated, "Polybrominated diphenyl ether (PBDE) flame retardants have been used in consumer polymers at up to percent levels. While long viewed as biologically inaccessible therein, PBDEs may become bioaccessible following volatilization or polymer deterioration."
The news reporters obtained a quote from the research from the College of William and Mary, "PBDEs may then enter soils via polymer fragmentation or following land application of sewage sludge-derived biosolids. Studies of direct PBDE uptake from these materials by soil organisms are scarce. We thus exposed earthworms (Eisenia fetida) to artificial soil amended with a Class B anaerobically digested biosolid (ADB), an exceptional quality composted biosolid (CB), PBDE-containing polyurethane foam (PUF) microparticles, and Penta-BDE-spiked artificial soil (SAS). Worms accumulated mg/kg (lipid) Sigma Penta-PBDE burdens from all substrates. Biotasoil accumulation factors (BSAFs) for worms exposed to ADB- and CB-amended soils were comparable after 28 d. BSAFs generally decreased with increasing congener K-ow and substrate dosage. Biosolids-associated PBDE bioavailability was lower than spiked for worms exposed to PUF microparticles ranged from 3.9 to 33.4, with Sigma Penta-PBDE tissue burdens reaching 3740 mg/kg lipid. Congener accumulation patterns were similar in worms and polyethylene passive sampling devices immersed in ADB-amended soil coincident with exposed worms. However, passive sampler accumulation factors were lower than BSAFs. Our results demonstrate that PBDEs may accumulate in organisms ingesting soils containing biosolids or waste plastics."
According to the news reporters, the research concluded: "Such organisms may then transfer their burdens to predators or translocate them from the site of application/disposal."
For more information on this research see: Polybrominated Diphenyl Ether (PBDE) Accumulation by Earthworms (Eisenia fetida) Exposed to Biosolids-, Polyurethane Foam Microparticle-, and Penta-BDE-Amended Soils. Environmental Science & Technology, 2013;47(23):13831-13839. Environmental Science & Technology can be contacted at: Amer Chemical Soc, 1155 16TH St, NW, Washington, DC 20036, USA. (American Chemical Society - www.acs.org; Environmental Science & Technology - www.pubs.acs.org/journal/esthag)
Our news correspondents report that additional information may be obtained by contacting M.O. Gaylor, College of William & Mary, Sch Marine Sci, Virginia Inst Marine Sci, Dept. of Environm & Aquat Anim Hlth, Gloucester Point, VA 23062, United States. Additional authors for this research include E. Harvey and R.C. Hale.
Keywords for this news article include: Virginia, United States, Gloucester Point, North and Central America, Environmental Science and Technology
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC