Data/hora: 12/06/2024 05:26:10

Provedor de dados: | 5
País: | France
Título: | Matière organique et pollution par les hydrocarbures dans les sédiments superficiels du golfe d'Arzew (mer Méditerranée, Algérie)
Autores: | Buscail, R; Foudil-bouras, Ae; Pauc, H.
Data: | 1999-05
Ano: | 1999
Palavras-chave: | Sédiment; Matière organique; Substance humique; Hydrocarbure; Marge algérienne; Sediment; Organic matter; Humic substance; Hydrocarbon; Algerian margin.
Resumo: | The distribution of global organic parameters (organic carbon, nitrogen, hydrolyzable carbon) was established in surficial sediments of the Gulf of Arzew. Moreover, humic substances, humin and hydrocarbons have provided information on the organic matter origin and evolution in the identified sedimentary areas: prodeltas at the mouth of the dry rivers Cheliff and Macta; muddy mid-deposits and carbonated shallow environments. The higher organic matter concentrations characterize the muddy mid-deposits and especially the western part located near the Arzew and Bethioua harbours (TOC &gt; 0.9 %; Nt = 0.35 % d.w.). The marine origin of the organic matter is supported by low C/N ratios (5-9) in the total sediments and the position in the Van Krevelen diagram of the humic acid H/C, N/C and O/C atomic ratios. The predominant marine character results from an important phytoplanktonic production. Only organic matter of the Cheliff prodelta is characterized by a double marine and continental signal. The degradation state of organic matter shows that the compounds are more degraded in the western part of the gulf, towards the east to west transfer of matter. The Arzew and Bethioua harbours areas are enriched in hydrocarbons (90-180 mg kg(-1)) according to the N.S.A. norm (1975) and represent significant petrogenic pollution levels.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00325/43612/43914.pdf

DOI:10.1016/S0399-1784(99)80054-1

http://archimer.ifremer.fr/doc/00325/43612/

Editor: | Gauthier-villars/editions Elsevier
Formato: | application/pdf
Fonte: | Oceanologica Acta (0399-1784) (Gauthier-villars/editions Elsevier), 1999-05 , Vol. 22 , N. 3 , P. 303-317

Fonte:

Elsevier, Paris / Ifremer / Cnrs / Ird

info:eu-repo/semantics/openAccess

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