Advanced search
1 file | 1.21 MB

Additive models reveal sources of metals and organic pollutants in Norwegian marine sediments

(2017) ENVIRONMENTAL SCIENCE & TECHNOLOGY. 51(21). p.12764-12773
Author
Organization
Abstract
We characterized spatial patterns of surface sediment concentrations of seven polychlorinated biphenyls (PCBs), seven polycyclic aromatic hydrocarbons (PAHs), three chlorinated pesticides, and five metals in Norwegian waters and Skagerrak. In total, we analyzed 5036 concentrations of 22 chemical substances that were measured between 1986 and 2014 at 333 sampling sites by means of generalized additive models (GAMs). We found that GAMs with organic carbon content of the sediment and latitude and longitude as co-variates explained as ca. 75% of the variability of the contaminant sediment concentrations. For metals, a predominantly hotspot-driven spatial pattern was found, i.e., we identified historical pollution hotspots (e.g., Sørfjord in western Norway) for mercury, zinc, cadmium, and lead. Highest concentrations of PAHs and PCBs were found close to densely populated and industrialized regions, i.e., in the North Sea and in the Kattegat and Skagerrak. The spatial pattern of the PCBs suggests the secondary and diffuse atmospheric nature of their sources. Atmospheric inputs are the main sources of pollution for most organic chemicals considered, but north of the Arctic circle, we found that concentrations of PAHs increased from south to north most likely related to a combination of coal-eroding bedrock and the biological pump. The knowledge acquired in the present research is essential for developing effective remediation strategies that are consistent with international conventions on pollution control.
Keywords
POLYCYCLIC AROMATIC-HYDROCARBONS, SORFJORD WESTERN NORWAY, PCB-CONCENTRATIONS, HEAVY-METALS, POLYCHLORINATED-BIPHENYLS, ATMOSPHERIC DEPOSITION, MYTILUS-EDULIS, BERGEN HARBOR, ARCTIC-OCEAN, FIELD DATA

Downloads

  • Everaert et al (2017) - Additive Models Reveal Sources of Metals and Organic Pollutants in Norwegian Marine Sediments.pdf
    • full text
    • |
    • open access
    • |
    • PDF
    • |
    • 1.21 MB

Citation

Please use this url to cite or link to this publication:

Chicago
Everaert, Gert, Anders Ruus, Dag Øystein Hjermann, Katrine Borgå, Norman Green, Stepan Boitsov, Henning Jensen, and Amanda Poste. 2017. “Additive Models Reveal Sources of Metals and Organic Pollutants in Norwegian Marine Sediments.” Environmental Science & Technology 51 (21): 12764–12773.
APA
Everaert, Gert, Ruus, A., Hjermann, D. Ø., Borgå, K., Green, N., Boitsov, S., Jensen, H., et al. (2017). Additive models reveal sources of metals and organic pollutants in Norwegian marine sediments. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 51(21), 12764–12773.
Vancouver
1.
Everaert G, Ruus A, Hjermann DØ, Borgå K, Green N, Boitsov S, et al. Additive models reveal sources of metals and organic pollutants in Norwegian marine sediments. ENVIRONMENTAL SCIENCE & TECHNOLOGY. 2017;51(21):12764–73.
MLA
Everaert, Gert et al. “Additive Models Reveal Sources of Metals and Organic Pollutants in Norwegian Marine Sediments.” ENVIRONMENTAL SCIENCE & TECHNOLOGY 51.21 (2017): 12764–12773. Print.
@article{8566894,
  abstract     = {We characterized spatial patterns of surface sediment concentrations of seven polychlorinated biphenyls (PCBs), seven polycyclic aromatic hydrocarbons (PAHs), three chlorinated pesticides, and five metals in Norwegian waters and Skagerrak. In total, we analyzed 5036 concentrations of 22 chemical substances that were measured between 1986 and 2014 at 333 sampling sites by means of generalized additive models (GAMs). We found that GAMs with organic carbon content of the sediment and latitude and longitude as co-variates explained as ca. 75% of the variability of the contaminant sediment concentrations. For metals, a predominantly hotspot-driven spatial pattern was found, i.e., we identified historical pollution hotspots (e.g., Sørfjord in western Norway) for mercury, zinc, cadmium, and lead. Highest concentrations of PAHs and PCBs were found close to densely populated and industrialized regions, i.e., in the North Sea and in the Kattegat and Skagerrak. The spatial pattern of the PCBs suggests the secondary and diffuse atmospheric nature of their sources. Atmospheric inputs are the main sources of pollution for most organic chemicals considered, but north of the Arctic circle, we found that concentrations of PAHs increased from south to north most likely related to a combination of coal-eroding bedrock and the biological pump. The knowledge acquired in the present research is essential for developing effective remediation strategies that are consistent with international conventions on pollution control.},
  author       = {Everaert, Gert and Ruus, Anders and Hjermann, Dag Øystein and Borgå, Katrine and Green, Norman and Boitsov, Stepan and Jensen, Henning and Poste, Amanda},
  issn         = {0013-936X},
  journal      = {ENVIRONMENTAL SCIENCE & TECHNOLOGY},
  keywords     = {POLYCYCLIC AROMATIC-HYDROCARBONS,SORFJORD WESTERN NORWAY,PCB-CONCENTRATIONS,HEAVY-METALS,POLYCHLORINATED-BIPHENYLS,ATMOSPHERIC DEPOSITION,MYTILUS-EDULIS,BERGEN HARBOR,ARCTIC-OCEAN,FIELD DATA},
  language     = {eng},
  number       = {21},
  pages        = {12764--12773},
  title        = {Additive models reveal sources of metals and organic pollutants in Norwegian marine sediments},
  url          = {http://dx.doi.org/10.1021/acs.est.7b02964},
  volume       = {51},
  year         = {2017},
}

Altmetric
View in Altmetric
Web of Science
Times cited: