Evaluation of the boundary condition influence on PAH concentrations in the water column during the sediment dredging of a port
2015
Cutroneo, L. | Castellano, M. | Carbone, C. | Consani, S. | Gaino, F. | Tucci, S. | Magrì, S. | Povero, P. | Bertolotto, R.M. | Canepa, G. | Capello, M.
The mobilisation of sediments and related contaminants connected to dredging activities is one of the most critical issues to the environmental risk and exposure assessment of a dredging project. The aim of this paper was an investigation of the mobilisation of polycyclic aromatic hydrocarbons (PAHs) due to the dredging of the Port of Genoa (Italy) to identify the temporal and spatial extent of the contaminant transport, and the influence of the dredging and the boundary conditions on it. The results showed relatively low background PAH concentrations in the water column and confirmed the dredging as the primary rising factor of concentrations in the water column, but also showed a complex scenario in which the different environmental and dredging factors forced the concentrations at different levels and moments. The post dredging phase showed PAH values close to the background conditions and the concentrations remained relatively high only for a few PAHs.
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