Publication Date:
2022-05-25
Description:
Author Posting. © The Author(s), 2010. This is the author's version of the work. It is posted here by permission of Elsevier B.V. for personal use, not for redistribution. The definitive version was published in Marine Pollution Bulletin 62 (2011): 631-636, doi:10.1016/j.marpolbul.2010.12.022.
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 OPBDEs.
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.
Description:
The project described was supported in part by Grant Numbers NA16RU1496 and
NA06OAR4300227 from the National Oceanic and Atmospheric Administration, and
Grant Number 5P20RR021929 from the National Center for Research Resources.
Keywords:
O-PBDEs
;
Radiocarbon
;
Accelerator mass spectrometry
;
Sponges
;
Mariana Islands
;
Pacific Ocean
Repository Name:
Woods Hole Open Access Server
Type:
Preprint
Format:
application/pdf
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