Publications by authors named "F Elbaz-Poulichet"
Article Synopsis
- The study explores the impact of copper (Cu) from antifouling paints on marine environments, particularly in Port Camargue, highlighting the significant Cu contamination linked to marina activities.
- Researchers analyzed Cu isotopes in antifouling paints, shipyard sludges, and sediment cores to differentiate between natural Cu sources and those from these paints, finding that the overall isotope composition varied across samples.
- Results indicated that heavily contaminated sediments exhibited lighter isotope signatures than the antifouling paints, suggesting complex interactions and chemical changes during copper's release into seawater; further studies are needed to understand these processes better and assess the reliability of Cu isotopes as environmental tracers.
Controlled laboratory experiments were conducted to test the effects of copper (Cu) and butyltins (BuT) on the growth, photosynthetic activity and toxin content of two HABs (Harmful Algal Blooms) dinoflagellates, the planktonic Alexandrium catenella and the benthic Ostreopsis cf. ovata. Microalgae were exposed to increasing concentrations of Cu (10 to 31 nM) or BuT (0.
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- The study examines contamination of water and sediment in major rivers discharging into the Gulf of Lions, highlighting former non-ferrous metal mining activities as a source of pollution.
- It identifies arsenic, antimony, and thallium as the main contaminants in different rivers and notes a decrease in metal concentrations downstream due to natural processes like dilution and precipitation.
- The research emphasizes the ongoing environmental threats posed by past mining activities and calls for better monitoring and studies on health impacts, particularly concerning higher rates of cancer and lead exposure found in local populations.
Article Synopsis
- Despite a ban on tributyltin (TBT) in marine paints, sediments in the Port Camargue marina are still heavily contaminated with TBT and its breakdown products, dibutyltin (DBT) and monobutyltin (MBT).
- Water samples taken in summer 2012 and 2013, and winter 2012-2013, revealed varying TBT concentrations due to factors like microbial activity and sediment conditions, with summer 2013 showing the highest release of TBT at 70 ngSn L(-1).
- The study suggests that sediments act as a persistent source of TBT to the surrounding water, highlighting ongoing environmental concerns despite regulatory efforts.
Article Synopsis
- This study analyzed antimony (Sb) isotopic composition in water samples from two rivers in France affected by historical mining.
- Researchers used a specialized method (HG-MC-ICP-MS) to measure the isotopic ratios after purifying the samples with a new technique involving thiol-cellulose powder.
- Findings revealed significant isotopic variations in water from the upper Orb River and Gardon River, indicating different pollution sources and biogeochemical processes related to mining activities, while suggesting that Sb isotopic composition can help trace pollution dynamics in hydrological systems.