Levels and potential sources of decabromodiphenyl ethane (dbdpe) and decabromodiphenyl ether (decaBDE) in lake sediment and marine sediment in Sweden
2010 (English)In: Environmental Science and Technology, ISSN 0013-936X, E-ISSN 1520-5851, Vol. 44, no 6, 1987-1991 p.Article in journal (Refereed) Published
Decabromodiphenyl ethane (dbdpe) is a brominated flame retardant (BFR) used as a replacement for the structurally similar decabromodiphenyl ether (decaBDE), which is a regulated environmental contaminant of concern. Dbdpe has been found in indoor dust, sewage sludge, sediment and biota, but little is known about its occurrence and distribution in the environment. In this paper, sediment was analyzed from 11 isolated Swedish lakes and along a transect running from central Stockholm through the Stockholm archipelago to the open Baltic Sea. Dbdpe was present in all samples. In lake sediment, the levels ranged from 0.23 to 11 ng/g d.wt. and were very similar to the levels of decaBDE (0.48-11 ng/g d.wt.). Since the lakes have no known point sources of BFRs, their presence in the sediments provides evidence for long range atmospheric transport and deposition. In the marine sediment, the dbdpe and decaBDE levels decreased by a factor of 20-50 over 40 km from the inner harbor to the outer archipelago. There the dbdpe and decaBDE levels were similar to the levels in nearby isolated lakes. The results indicate that contamination of the Swedish environment with dbdpe has already approached that of decaBDE, and that this contamination is primarily occurring via the atmosphere.
Place, publisher, year, edition, pages
2010. Vol. 44, no 6, 1987-1991 p.
Research subject Applied Environmental Science
IdentifiersURN: urn:nbn:se:su:diva-34188DOI: 10.1021/es903701qOAI: oai:DiVA.org:su-34188DiVA: diva2:284461