Consulta: creatorFacets:"Schmidt, Natascha"
Registros recuperados: 5
Data/hora: 27/07/2024 06:42:44

Distribution of phthalates in Marseille Bay (NW Mediterranean Sea)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: 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

From In Situ to satellite observations of pelagic Sargassum distribution and aggregation in the Tropical North Atlantic Ocean
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: 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...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00514/62609/66969.pdf

Occurrence of microplastics in surface waters of the Gulf of Lion (NW Mediterranean Sea)
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: Schmidt, Natascha; Thibault, Delphine; Galgani, Francois; Paluselli, Andrea; Sempere, Richard.
Between 2014 and 2016 a total of 43 microplastic samples were collected at six sampling stations in the eastern section of the Gulf of Lion (located in the northwestern Mediterranean Sea), as well as upstream of the Rhône River. Microplastics were found in every sample with highly variable concentrations and masses. Concentrations ranged from 6 · 103 items km−2 to 1 · 106 items km−2 (with an average of 112 · 103 items km−2), and mass ranged from 0.30 g km−2 to 1018 g km−2 DW (mean 61.92 ± 178.03 g km−2). The samples with the highest and lowest microplastic count originate both from the Bay of Marseille. For the Bay of Marseille, it is estimated that the total microplastic load consist of 519 · 103 –101 · 106 items weighing 0.07–118 kg. Estimations for...
Tipo: Text
Palavras-chave: Marine litter; Microplastic; Mediterranean Sea; Gulf of Lion; Marseille Bay.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00411/52202/53357.pdf

One-Single Extraction Procedure for the Simultaneous Determination of a Wide Range of Polar and Nonpolar Organic Contaminants in Seawater
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: 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 &lt; log K-ow &lt; 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

The Amazon River: A Major Source of Organic Plastic Additives to the Tropical North Atlantic?
Provedor de dados: Institutional Archive of Ifreme (ArchiMer)
Autores: 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...
Tipo: Text
Ano: 2019
URL: https://archimer.ifremer.fr/doc/00514/62607/66967.pdf