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| Ody, Anouck; Thibaut, Thierry; Berline, Léo; Changeux, Thomas; André, Jean-michel; Chevalier, Cristèle; Blanfuné, Aurélie; Blanchot, Jean; Ruitton, Sandrine; Stiger-pouvreau, Valerie; Connan, Solène; Grelet, Jacques; Aurelle, Didier; Guéné, Mathilde; Bataille, Hubert; Bachelier, Celine; Guillemain, Dorian; Schmidt, Natascha; Fauvelle, Vincent; Guasco, Sophie; Ménard, Frédéric. |
| The present study reports on observations carried out in the Tropical North Atlantic in summer and autumn 2017, documenting Sargassum aggregations using both ship-deck observations and satellite sensor observations at three resolutions (MSI-10 m, OLCI-300 m, VIIRS-750 m and MODIS-1 km). Both datasets reported that in summer, Sargassum aggregations were mainly observed off Brazil and near the Caribbean Islands, while they accumulated near the African coast in autumn. Based on in situ observations, we propose a five-class typology allowing standardisation of the description of in situ Sargassum raft shapes and sizes. The most commonly observed Sargassum raft type was windrows, but large rafts composed of a quasi-circular patch hundreds of meters wide were... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00514/62609/66969.pdf |
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| Paluselli, Andrea; Fauvelle, Vincent; Galgani, Francois; Sempere, Richard. |
| Plastic debris in the environment contain plasticizers, such as phthalates (PAEs), that can be released during plastic aging. Here, two common plastic materials, i.e., an insulation layer of electric cables (polyvinylchloride, PVC-cables) and plastic garbage bag (polyethylene, PE-bags), were incubated in natural seawater under laboratory conditions, and the PAE migration to the seawater phase was studied with varying light and bacterial conditions over a 90-day time course. Free PAEs diluted in seawater were also studied for bacterial degradation. Our results showed that, within the first month of incubation, both plastic materials significantly leached out PAEs in surrounding water. We found that di-isobutyl phthalate (DiBP) and di-n-butyl phthalate... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00470/58137/60607.pdf |
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| Fauvelle, Vincent; Castro-jimenez, Javier; Schmidt, Natascha; Carlez, Benoit; Panagiotopoulos, Christos; Sempere, Richard. |
| A rapid analytical method including one-single solid-phase extraction (SPE) procedure followed by gas and liquid chromatography coupled with high resolution mass spectrometry detection (GC-MS and LC-HRMS respectively) was developed for the quantification of 40 organic compounds (1.6 < log K-ow < 9.5) in seawater including both legacy and emerging contaminants, with a focus on the most common plastic organic additives. This new method allowed for the analyses of nine organophosphate esters (OPEs), seven phthalates (PAEs), six bisphenols (BPs), five perfluorinated compounds (PFCs), and thirteen legacy organochlorinated compounds (OCs, including polychlorobiphenyles and pesticides) with recoveries in the ranges of 57-124% for OPEs, 52-163% for PAEs,... |
| Tipo: Text |
Palavras-chave: Plastic additive; Seawater; Organic contaminants; Legacy contaminants; Phtalates; Bisphenol; Organophosphate esters. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00645/75716/76697.pdf |
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| Paluselli, Andrea; Fauvelle, Vincent; Schmidt, Natascha; Galgani, Francois; Net, Sopheak; Sempere, Richard. |
| Phthalic Acid Esters (PAEs) are a group of emerging organic contaminants that have become a serious issue because of their ubiquitous presence and hazardous impact on the marine environment worldwide. Seawater samples were collected monthly from December 2013 to November 2014 in the northwestern Mediterranean Sea (Marseille Bay). The samples were analyzed for dissolved organic carbon (DOC) as well as the molecular distribution of dissolved PAEs by using solid phase extraction followed by gas chromatography and mass spectrometry (GC/MS) analyses. The results demonstrated the occurrence of six PAEs, including dimethyl phthalate (DMP), diethyl phthalate (DEP), di-isobutyl phthalate (DiBP), di-n-butyl phthalate (DnBP), benzylbutyl phthalate (BzBP) and... |
| Tipo: Text |
Palavras-chave: Phthalates; DEHP; DMP; Seawater; Dissolved organic matter; Endocrine disruptors. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00413/52482/53358.pdf |
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| Schmidt, Natascha; Fauvelle, Vincent; Ody, Anouck; Castro Jimenez, Javier; Jouanno, Julien; Changeux, Thomas; Thibaut, Thierry; Sempéré, Richard. |
| The release of emerging organic contaminants is identified among the most critical hazards to the marine environment, and plastic additives have received growing attention due to their worldwide distribution and potential deleterious effects. Here, we report dissolved surface water concentrations of two important families of plastic additives (organophosphate esters (OPEs) and bisphenols) and other related organic compounds (perfluorinated chemicals) measured in the North Atlantic from Cape Verde to the West Indies. We found that OPEs were the most abundant contaminants, reaching remarkably high concentrations in open ocean waters (1200 km offshore of the American Coast, at the location of the Amazon river plume during the sampling period), with up to 1.3... |
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| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00514/62607/66967.pdf |
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| Fauvelle, Vincent; Belles, Angel; Budzinski, Helene; Mazzella, Nicolas; Plus, Martin. |
| The work presented here aims at comparing monitoring of S-metolachlor, the major pesticide in use in the Arcachon Bay (South West of France, transitional coastal area), by chemical analysis (monthly passive sampling) and contaminant dissipation modeling from sources (Mars-2D model). The global strategy consisted in i) identifying the major sources of S-metolachlor to the Bay, ii) monitoring these sources for 12 months, and iii) comparing modeled data in the Bay based on measured inputs, to chemical measurements made inside the Bay along with the 12-month source monitoring. Results first showed that the major S-metolachlor surface inputs to the Arcachon Bay are mainly from one single source. Modeled and measured data were in good agreement at 5 sites in the... |
| Tipo: Text |
Palavras-chave: Passive sampling; POCIS; Mars-2D; Contaminant; Monitoring; Coastal area; Pesticides; S-metolachlor. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00445/55627/57334.pdf |
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