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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jonsson, P. Cornelissen, G. Sobek, A. Sundqvist, K. L. Wiberg, K. Haglund, P. |
| Description | Author Affiliation: Sobek A ( Department of Applied Environmental Science (ITM), Stockholm University, SE-10691 Stockholm, Sweden. Electronic address: anna.sobek@itm.su.se.); Wiberg K ( Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences (SLU), SE-750 07 Uppsala, Sweden.); Sundqvist KL ( ÅF AB, Umestan Företagspark, SE-903 47 Umeå, Sweden.); Haglund P ( Department of Chemistry, Umeå University, SE-90187 Umeå, Sweden.); Jonsson P ( Department of Applied Environmental Science (ITM), Stockholm University, SE-10691 Stockholm, Sweden.); Cornelissen G ( Department of Applied Environmental Science (ITM), Stockholm University, SE-10691 Stockholm, Sweden) |
| Abstract | High levels of PCDD/Fs and PCBs in Baltic Sea biota have been a matter of great concern during the last decades. We measured the freely dissolved concentrations of PCDD/Fs and PCBs in sediment pore water and bottom water in eight areas along the Swedish coast of the Gulf of Bothnia, by using state-of-the-art passive samplers. Chemical activity ratios (calculated from freely dissolved concentrations in pore water and bottom water based on chemical activity ratios) for PCDD/Fs were higher than 1 at all stations (PCDD/Fs average 27; stdev 22). High activity ratios suggest that the sediments have a potential to act as a source of dissolved PCDD/Fs to the water column. Activity ratios for PCBs varied between 0.3 and 17 (average 2; stdev 4). The concentrations of PCDD/Fs and PCBs in bottom water were significantly correlated with concentrations in sediment pore water (p<0.00001 to p=0.03) as well as with concentrations in juvenile perch caught in the same areas (p<0.00001 to p=0.02). To our knowledge, this is the first study demonstrating a correlation between in-situ measured freely dissolved PCDD/F concentrations and lipid-normalized contents in stationary fish. Our results confirm that freely dissolved concentrations should be used as chemical predictors of bioaccumulation. The results from this study imply that continued efforts to reduce levels of PCDD/Fs and PCBs in coastal sediments will have positive effects on concentrations of these contaminants in lower trophic levels of Baltic Sea ecosystems. |
| ISSN | 00489697 |
| Volume Number | 487 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2014-07-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Benzofurans Analysis Environmental Monitoring Geologic Sediments Chemistry Polychlorinated Biphenyls Analogs & Derivatives Water Pollutants, Chemical Animals Fishes Metabolism Food Chain Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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