Evaluation of phytotoxicity of seaport sediments aged artificially by rotary leaching in the framework of a quarry deposit scenario

Abstract : In the framework of an ecological risk assessment of seaport sediments for terrestrial ecosystems when deposited in quarries, we simulated the ‘‘ageing’’ of sediments exposed to rain. This experiment high- lighted an inflection point at the solid/liquid ratio 1/25, after which the extraction of pollutants increases moderately. The raw sediments studied inhibited the germination of Lolium perenne and Armeria mariti- ma (a halophytic species) seeds. Furthermore, they affected the early development of L. perenne. The same sediments, leached at a ratio of 1/25, presented a reduction of acute (germination) and chronic (growth) phytotoxicity. The bioconcentration factors of the metals studied decreased with the leached sediment, except for Cu which was still clearly identified in root parts. Thus rotary leaching tests and phytotoxicity bioassays can be used to provide an initial assessment of the ability of plants, particularly halophytes, to colonize deposits of dredged seaport sediments.
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Marine Pollution Bulletin, Elsevier, 2014, 86, pp.48-58. 〈10.1016/j.marpolbul.2014.07.043〉
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Soumis le : mardi 21 octobre 2014 - 10:23:37
Dernière modification le : jeudi 19 avril 2018 - 14:28:03

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Jean-Philippe Bedell, Yannis Ferro, Christine Bazin, Yves Perrodin. Evaluation of phytotoxicity of seaport sediments aged artificially by rotary leaching in the framework of a quarry deposit scenario. Marine Pollution Bulletin, Elsevier, 2014, 86, pp.48-58. 〈10.1016/j.marpolbul.2014.07.043〉. 〈hal-01076095〉

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