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Assessing the risk of booster biocides for the marine environment: A case study at the Belgian part of the North Sea
Vanavermaete, D.; Hostens, K.; Everaert, G.; Parmentier, K.; Janssen, C.; De Witte, B. (2023). Assessing the risk of booster biocides for the marine environment: A case study at the Belgian part of the North Sea. Mar. Pollut. Bull. 197: 115774. https://dx.doi.org/10.1016/j.marpolbul.2023.115774
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X; e-ISSN 1879-3363, meer
Peer reviewed article  
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Author keywords
    Anti-fouling; Booster biocides
Auteurs  Top 
  • Vanavermaete, D., meer
  • Hostens, K., meer
  • Everaert, G., meer
Abstract
    The biofouling of submerged surfaces such as ship hulls is often prevented by using anti-fouling components in combination with booster biocides. These booster biocides enter the water column and may affect non-target organisms. Although different negative effects have been associated with the use of booster biocides, their effects on non-target organisms are often unknown. So far, the environmental risks for booster biocides have barely been quantified in the North Sea. In this work, the concentration of five commonly used booster biocides as well as tributyltin has been monitored at five dredged spoil disposal sites in the Belgian part of the North Sea and the harbour and ports of Nieuwpoort, Oostende, and Zeebrugge. Hotspots were discovered where the concentration of one or more booster biocides exceeded the predicted no-effect concentration. Tributyltin has been banned since 2008, but concentrations of 237- to 546-fold of the predicted no-effect concentration were detected in the harbours and ports. Moreover, TBT has been detected in the same order of magnitude in other sea basins, emphasizing the need to monitor the trends and impact of booster biocides and TBT in environmental monitoring programs.
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