Brominated Dibenzo-p-Dioxins: A New Class of Marine Toxins?
| Autor: | Anders Bignert, Lillemor Asplund, Anna Malmvärn, Takeshi Nakano, Sture Bergek, Karin Wiberg, Lena Kautsky, Peter Haglund |
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| Rok vydání: | 2007 |
| Předmět: |
Greenhouse Effect
Mytilus edulis Oceans and Seas Dioxins Crustacea Littoral zone Animals Environmental Chemistry Mollusca Shellfish Sweden Persistent organic pollutant biology Ecology Fishes General Chemistry Anguilla Bivalvia biology.organism_classification Environmental chemistry Environmental science Marine Toxins Eutrophication Marine toxin Bay Water Pollutants Chemical Environmental Monitoring |
| Zdroj: | Environmental Science & Technology. 41:3069-3074 |
| ISSN: | 1520-5851 0013-936X |
| DOI: | 10.1021/es0624725 |
| Popis: | Levels of polybrominated dibenzo-p-dioxins (PBDDs) were measured in marine fish, mussels, and shellfish. PBDDs were nondetectable in samples from freshwater environments, and their levels were successively higher in samples from the marine environments of the Bothnian Bay and Bothnian Sea, the West Coast of Sweden, and the Baltic Proper. In Baltic Proper littoral fish the levels of PBDDs generally exceeded those of their chlorinated analogues (PCDDs). This is alarming as some Baltic fish species already are contaminated by chlorinated dioxins to such an extent that they cannot be sold on the European market. By comparing spatial trends in PBDD and PCDD distributions, and PBDD patterns in fish, mussels, and algae, we show that the PBDDs are probably produced naturally, and we propose a route for their biosynthesis. We further show that the levels of PBDDs are high (ng/g wet weight) in mussels, and that the levels increase over time. Finally, we discuss the possibility that the PBDDs have adverse biological effects, and that the levels are increasing as a result of global warming and eutrophication. |
| Databáze: | OpenAIRE |
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