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Title Major controls of some metals' distribution in sediments off the Nile Delta, Egypt العوامل الرئيسية المتحكمة فى توزيع الفلزات فى رسوبيات دلتا نهر النيل ، مصر
Full text http://hdl.handle.net/1834/1259
Date 2005
Author(s) Rifaat, A.E.
Abstract This journal is published by NIOF, Alexandria, Egypt - The sediment samples that are collected during R/V CHAIN 1975 cruise to the southeastern Mediterranean have been used to determine the major controls of metals'distribution. The sediment samples were analysed mineralogically, chemically and texturally. The parameters measured included carbonate minerals, total carbonate, organic carbon, iron, manganese, copper, zinc, chromium, lead, nickel, cobalt, vanadium, calcium, magnesium, strontium, sand, silt and clay. The statistical analysis of data showed that four major factors control the distribution of metals in sediments of the Nile cone; These are: Factor 1 terrigenous mud-calcareous sand; Factor 2 Aragonite mud-terrigenous sand; Factor 3 Algal sand; and Factor 4 Aragonite. The percentages of terrigenous sand, mud and calcareous components of the Nile cone sediments greatly affect the elements spatial distribution. In addition to that, minor controls such as precipitation and coprecipitation may affect the elemental distribution. The distributions of iron, manganese, copper, zinc, chromium, lead, nickel, cobalt, and vanadium are associated mainly with the terrigenous mud fraction of the sediment whereas, calcium and strontium are mainly related to calcareous sands. Iron, copper, cobalt, lead and vanadium are partially related to montmorillonite. Lead is associated with acid feldspars and chromium is mainly controlled by terrigenous sand. The distribution of calcium and strontium is controlled by the coarsecalcareous fraction of sediments. Magnesium and manganese are associate with algal sand. The aragonite and calcite minerals are forming the majority of carbonate mud, which controls partially the distribution of calcium, strontium, lead and copper. - NIOF, Alexandria, Egypt
Subject(s) Nile Delta, Sediment, Metals, Factor Analysis; COASTAL OCEANOGRAPHY; SEDIMENTS
Language en
Publisher Alexandria: National Institute of Oceanography and Fisheries
Type of publication Article
Format 40131 bytes; 413999 bytes; application/pdf; application/pdf
Identifier Egyptian Journal of Aquatic Research, 31 (2), p. 16-28; 1687-4285
Repository Africa - Ocean Data and Information Network of Africa (OdinAfrica)
Added to C-A: 2008-12-22;01:56:54