Reservoir sediments; Mercury; Bioaccumulation; Biomagnification; Human impact; Industrial pollution
Dranguet Perrine, Cosio Claudia, Le Faucheur Séverine, Hug Peter Dorothea, Loizeau Jean-Luc, Ungureanu Viorel Gh., Slaveykova Vera (2017), Biofilm composition in the Olt River (Romania) reservoirs impacted by chlor-alkali production plant, in Environmental Science Processes and Impacts
, 19, 687-695.
Dranguet Perrine, Le Faucheur Séverine, Cosio Claudia, Slaveykova Vera (2017), Influence of chemical speciation and biofilm composition on mercury accumulation by freshwater biofilms, in Environmental Science Processes and Impacts.
, 19(1), 38-41.
Dranguet Perrine, Cosio Claudia L, Le Faucheur Séverine, Beauvais-Flueck Rebecca, Freiburghaus Aline, Worms Isabelle, Petit Brice, Civic Natacha, Docquier Mylene, Slaveykova Vera (2017), Transcriptomic approach for assessment of the impact on microalga and macrophyte of in-situ exposure in river sites contaminated by chlor-alkali plant effluents, in Water Research
, 121, 86-94.
Le Faucheur Séverine, Vasiliu Dan, Catianis Irina, Zazu Mariana, Dranguet Perrine, Beauvais-Flück Rebecca, Loizeau Jean-Luc, Cosio Claudia, Ungureanu Costin, Ungureanu Viorel Gheorghe, Slaveykova Vera I (2016), Environmental quality assessment of reservoirs impacted by Hg from chlor-alkali technologies: case study of a recovery, in Environmental Science and Pollution Research
, 23(22), 22542.
Bravo Andrea G., Loizeau Jean-Luc, Dranguet Perrine, Makri Stamatina, Björn Erik, Ungureanu Viorel Gh., Slaveykova Vera, Cosio Claudia (2016), Persistent Hg contamination and occurrence of Hg-methylating transcript (hgcA) downstream of a chlor-alkali plant in the Olt River (Romania), in Environmental Science and Pollution Research
, 23(11), 10529-10541.
Cosio Claudia, Flück Rebecca, Regier Nicole, Slaveykova Vera I. (2014), Effects of macrophytes on the fate of mercury in aquatic systems, in Environmantal Toxicology and Chemistry
, 33, 1225-1237.
Le Faucheur Séverine, Campbell Peter G.C., Fortin Claude, SlaveykovaVera I (2014), Interactions between mercury and phytoplankton: Speciation, bioavailability and internal handling, in Environmental Toxicology and Chemistry
, 33, 1211-1224.
Bravo Andrea Garcia, Le Faucheur Séverine, Monperrus Mathilde, Amouroux David, Slaveykova Vera I (2014), Species-specific isotope tracers to study the accumulation and biotransformation of mixtures of inorganic and methyl mercury by the microalga Chlamydomonas reinhardtii., in Environmental pollution (Barking, Essex : 1987)
, 192, 212-5.
Dranguet Perrine, Fluck Rebecca, Regier Nicole, Cosio Claudia, Le Faucheur Séverine, Slaveykova Vera (2014), Towards Mechanistic Understanding of Mercury Availability and Toxicity to Aquatic Primary Producers., in Chimia
, 68(11), 799-805.
Dranguet Perrine, Le Faucheur Séverine, Slaveykova Vera, Mercury bioavailability, transformations and effects to freshwater biofilms, in Environmental Toxicology and Chemistry. 2017
Mercury (Hg) is a persistent micropollutant presenting a substantial risk to the environment and an important threat to the human health. Past and present Hg contaminations of surface waters are thus of major concern due to the potential of Hg to accumulate in biota and magnify in the food chain. Therefore, the improved understanding of the relationship between Hg dispersion, distribution among sediments, particles, colloids and dissolved fractions, as well as accumulation and impact to biota is a prerequisite to fully assess the Hg threat to the aquatic systems and human health.By applying an integrated approach including a combination of field studies, laboratory analyses and numerical simulations, the present proposal aims to assess the impact of the Hg in the industrially impacted surface water bodies in Romania and to identify the possible threat on these resources The project focuses on River Olt basin, as one of the most impacted surface water body in Romania, altered by the cascade dam construction and under extensive past and present industrial activity. The Rm Valcea region comprises a high number of industrial companies including a large chlor-alkali plant (Oltchim), which is recognized as important point sources of Hg. A large array of hydro(geo)logical, physical, chemical, and ecotoxicological tools will be used to address the following key issues: •Performance of Hg survey and estimation the pollution extent in water and sediments;•Determination of the transport and dispersion of Hg in water column and sediments;•Improvement of the understanding on the behaviour of Hg associated to colloids, inorganic particles and organic matter;•Assessment of the bioaccumulation and effect of Hg to different organisms with emphasis on the primary producers in particular microalgae and macrophytes;•Evaluation of the food chain transfer and possible risks for the human health.The project will largely contribute to the understanding of mercury fate and impact in the contaminated systems and improved knowledge on complex processes governing the transfer and impact of Hg from the contaminated surface waters to humans. The project is also expected to contribute broadly to solving societal problems in Romania and to provide a scientific base for a sound definition of the existing problem and understand the causal chain, as well as it will help to develop efficient and cost-effective measures for protection. Strengthening the capacity, improving integration of scientists in the international network as well as developing “best practices” for impact assessment of pollutants are other major outcomes of the project. They will be a significant step forward contaminant assessment in the entire Danube - Black Sea - Caspian Sea region, as it is a commonly accepted that historical industrial pollution from former communist times represents a significant threat for public health.