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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Contemporary 14C radiocarbon levels of oxygenated polybrominated diphenyl ethers (O-PBDEs) isolated in sponge-cyanobacteria associations
Marine Pollution Bulletin, Volume 62, No. 3, Year 2011
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Description
Considerable debate surrounds the sources of oxygenated polybrominated diphenyl ethers (O-PBDEs) in wildlife as to whether they are naturally produced or result from anthropogenic industrial activities. Natural radiocarbon (14C) abundance has proven to be a powerful tool to address this problem as recently biosynthesized compounds contain contemporary (i.e. modern) amounts of atmospheric radiocarbon; whereas industrial chemicals, mostly produced from fossil fuels, contain no detectable 14C. However, few compounds isolated from organisms have been analyzed for their radiocarbon content. To provide a baseline, we analyzed the 14C content of four O-PBDEs. These compounds, 6-OH-BDE47, 2′-OH-BDE68, 2′,6-diOH-BDE159, and a recently identified compound, 2′-MeO-6-OH-BDE120, were isolated from the tropical marine sponges Dysidea granulosa and Lendenfeldia dendyi. The modern radiocarbon content of their chemical structures (i.e. diphenyl ethers, C12H22O) indicates that they are naturally produced. This adds to a growing baseline on, at least, the sources of these unusual compounds. © 2011 Elsevier Ltd.
Authors & Co-Authors
Guitart, Carlos
United States, Woods Hole
Woods Hole Oceanographic Institution
Spain, Madrid
Csic-ieo - Instituto Español de Oceanografía
Slattery, Marc
United States, University
University of Mississippi
Radwan, Mohamed M.
United States, University
University of Mississippi
Letcher, Robert J.
Canada, Gatineau
Environment and Climate Change Canada
Reddy, Christoper M.
United States, Woods Hole
Woods Hole Oceanographic Institution
Statistics
Citations: 24
Authors: 5
Affiliations: 4
Identifiers
Doi:
10.1016/j.marpolbul.2010.12.022
ISSN:
0025326X