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Chemical analyses of dredged spoil disposal sites at the Belgian part of the North Sea
De Witte, B.; Ruttens, A.; Ampe, B.; Waegeneers, N.; Gauquie, J.; Devriese, L.; Cooreman, K.; Parmentier, K. (2016). Chemical analyses of dredged spoil disposal sites at the Belgian part of the North Sea. Chemosphere 156: 172-180. http://dx.doi.org/10.1016/j.chemosphere.2016.04.124
In: Chemosphere. Elsevier: Oxford. ISSN 0045-6535; e-ISSN 1879-1298
Peer reviewed article  
Available in  Authors 
Keywords
    Chemical compounds > Organic compounds > Hydrocarbons > Unsaturated hydrocarbons > Aromatic hydrocarbons > PCB
    Chemical elements > Metals > Heavy metals
    Marine/Coastal
Author keywords
    Dredged spoil disposal; PAH; Pollution control measures
Authors  Top 
  • De Witte, B.
  • Ruttens, A.
  • Ampe, B.
  • Waegeneers, N.
  • Gauquie, J.
  • Devriese, L.
  • Cooreman, K.
  • Parmentier, K.
Abstract
    The chemical status of five dredged spoil disposal sites in the Belgian Part of the North Sea is evaluated. A linear mixed-effect model was applied to PCB, PAH and heavy metal data from 2005 to 2014. No decrease in PCB concentrations was found, with even an increase at two disposal sites. Hg/AL ratios increased with 62% at one disposal site (BR&WS2) from 2005 to 2006 to 2013–2014. Cu and Zn concentrations increased at two disposal sites. Additional harbour sampling suggests that the latter is possibly linked to antifouling paints. Based on OSPAR environmental assessment criteria, the current chemical status of the sites suggests no chronic effect of dredged spoil disposal. However, increasing time trend data for PCB, Hg, Cu and Zn demonstrate the importance of monitoring to identify adverse trends.
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