Jean-françois Masfaraud

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The polycyclic aromatic hydrocarbon (PAH) contamination, bacterial community, and PAH-degrading bacteria were monitored in aged PAH-contaminated soil (Neuves-Maisons [NM] soil; with a mean of 1,915 mg of 16 of soil dry weight) and in the same soil previously treated by thermal desorption (TD soil; with a mean of 106 mg of 16 of soil(More)
The aquatic bryophyte Fontinalis antipyretica Hedw. was exposed to different heavy metals (Cd, Cu, Pb, Zn) at 0, 0.1, 1, 10, 100 and 1000muM concentrations. Lipid peroxidation and anti-oxidative responses in apices were evaluated after 2 and 7 days of exposure. Most treated plants showed increased levels of lipid peroxidation and enzyme activities(More)
Derelict contaminated sites are often colonized spontaneously by plant species leading to a vegetal cover thought to limit particle dispersal and polluted water infiltration. Those plants must cope with soil pollutants through tolerance mechanisms that are not yet fully understood. Here, we focused our attention on a particular Asteraceae plant, Solidago(More)
The Vicia faba-micronucleus test is usually performed to assess the genotoxic potential of pure substances, effluents or water extracts from soil. It is also a relevant, early biological tool to detect mutagenic substances in crude soils. Nevertheless, the physiological meaning of such DNA damage for the plant in the long term remains to be elucidated. To(More)
The detoxification mechanisms of the aquatic moss, Fontinalis antipyretica Hedw., exposed to Cr was analyzed. In addition, the influence of Cr salts (as Cr nitrate, chloride and potassium bichromate) on these mechanisms has also been studied. The activity of antioxidant enzymes superoxide dismutase (SOD, EC, catalase (EC, ascorbate(More)
The management of dredged sediments is of environmental concern worldwide since they may be overloaded with myriads of pollutants. For inland waters' sediments, disposal on land is a common practice. For the long-term risks assessment of such a management, a better understanding of the fate of pollutants over time and an assessment of possible associated(More)
Mineral sunscreen nanocomposites, based on a nano-TiO(2) core, coated with aluminium hydroxide and dimethicone films, were submitted to an artificial ageing process. The resulting Altered TiO(2) Nanocomposites (ATN) were then tested in the liquid phase on the plant model Vicia faba, which was exposed 48 h to three nominal concentrations: 5, 25 and 50 mg(More)
It is useful to test ecotoxicity and genotoxicity endpoints in the environmental impact assessment. Here, we compare and discuss ecotoxicity and genotoxicity effects in organisms in response to exposure to arsenate (As V) in solution. Eco(geno)toxicity responses in Aliivibrio fischeri, Lytechinus variegatus, Daphnia magna, Skeletonema costatum and Vicia(More)
The present paper investigated the short-term colonization by plants of a highly degraded soil in field conditions. The objectives were to identify, through phytosociological analysis, the plant species able to grow on such polluted areas and to characterize pollutant effects at different biological levels through analyses of plant oxidative status, plant(More)
Biological and chemical measurements were performed in mesocosms to investigate the bioavailability of copper, with a greater emphasis on the effects of competing ions and copper speciation. Measurements were achieved in three different natural waters for two aquatic species (Gammarus pulex and Fontinalis antipyretica) along a copper gradient concentration:(More)