Consulta: creatorFacets:"Gadel, F"
Registros recuperados: 5
Data/hora: 06/06/2024 02:16:35

La matière organique dans les dépôts de l'archipel de Kerguelen. Distribution spatiale et saisonnière
Provedor de dados: 5
Autores: Delille, D; Gadel, F; Cahet, G.
Tipo: Text
Ano: 1979
URL: http://archimer.ifremer.fr/doc/00122/23328/21151.pdf

Étude structurale par spectrométrie de résonance magnétique nucléaire du proton de substances humiques de diverses origines
Provedor de dados: 5
Autores: Gadel, F; Torri, G.
Tipo: Text
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00108/21887/19478.pdf

Traceurs organiques dans les dépôts de la vasière Ouest-Gironde (Golfe de Gascogne)
Provedor de dados: 5
Autores: Gadel, F; Jouanneau, Jm; Weber, O; Serve, L; Comellas, L.
Mud fields located In the inner part of shelves in front of large estuaries are preferential environments for the investigation of the mechanisms and evolution in time of the supply of such sedimentary bodies. The study of different constituents of the particulate organic matter trapped in the sediments of the West Gironde mud patch contributes to the knowledge of the input origins. This study was carried out with different techniques, including pyrolysis-gas chromatography-mass spectrometry and high performance liquid chromatography, on samples from a core collected in the centre of the mud field. At the bottom of the core, the increase of sugars, amino-sugars and some aromatic hydrocarbons may indicate a more marine character of organic components. The...
Tipo: Text
Ano: 1997
URL: http://archimer.ifremer.fr/doc/00093/20426/18093.pdf

Caractérisation chimique des composés humiques et de leurs diverses classes de poids moléculaires dans les dépôts du delta du Rhône
Provedor de dados: 5
Autores: Gadel, F; Charriere, B; Serve, L; Comellas, L.
The analysis of humic compounds by elemental analysis, PY-GC-MS and HPLC techniques permitted determination of the origin of organic inputs, essentially terrestrial, and the effects of environmental conditions in the deposits along a north-south transect through the Rhone delta, from the river mouth to the open sea. In the prodelta the sedimentation of fine particles enriches the sediments in organic matter. The humic compound contents were relatively low in sediments, perhaps due to a rapid burying of organic matter which leads to anoxic conditions. In sediments fulvic acids are more abundant than humic acids. Elemental analysis indicated that fulvic acids were enriched in hydrogen and nitrogen as compared to humic acids. Furthermore, H/C and N/C ratios...
Tipo: Text
Palavras-chave: HUMIC COMPOUNDS; MOLECULAR WEIGHT CLASSES; PY-GC-MS; HPLC; RHONE DELTA.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00101/21187/18804.pdf

Biogeochemical markers of organic matter along the Wight-Cherbourg transect (central English Channel)
Provedor de dados: 5
Autores: Ismaili, Mm; Serve, L; Gadel, F; Lafite, R; Texier, H.
Three cruises on the Wight-Cherbourg transect were undertaken during the FluxManche II Programme in order to study the origin, nature and behaviour of organic matter inputs to the waters of the English Channel. Suspended particulate material (SPM) collected from surface and deep waters at each station was analysed at elemental level for Particulate Organic Carbon and Particulate Organic Nitrogen (POC, PON), at molecular level for main classes of organic compounds using Pyrolysis-Gas Chromatography coupled with Mass Spectrometry (Py-GC-MS) and for phenolic compounds, particularly lignin-derived phenols, using High Performance Liquid Chromatography (HPLC). The SPM content increases from the French (south) to the English coast (north) with the lowest values...
Tipo: Text
Palavras-chave: Matière particulaire en suspension; Composés organiques; Marqueurs phénoliques; Biogéochimie; Manche; Suspended particulate matter; Organic compounds; Phenolic markers; Biogeochemistry; English Channel.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00325/43603/43922.pdf