A hydro-geochemical study of Nahr-Ibrahim catchment area

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dc.contributor.author Korfali, Samira
dc.date.accessioned 2018-08-02T09:12:03Z
dc.date.available 2018-08-02T09:12:03Z
dc.date.issued 2018-08-02
dc.identifier.uri http://hdl.handle.net/10725/8258
dc.description.abstract Author.Metals enter water bodies geological weathering, soil erosion, industrial and domestic waste discharges, as well as atmospheric deposition. The metal content in sediments is a reflection of the nature of their background whether of geologic and/or anthropogenic origin. The depositional process of metals in sediment are controlled by river discharge, turbulence of river, morphology and river geometry, as well as the geochemical phases of sediment and soils. Thus a study of metal content in river and /or metal transport with a water body should include a hydrological study of the river, types of minerals in sediment and soil, sediment and soil textures, and metal speciation in the different geochemical phases of sediment, bank and soils. A contaminated flood plain is a temporary storage system for pollutants and an understanding of soil-sediment-interactions is important prerequisite for modeling fluvial pollutant transport. The determination of metal speciation in sediment and soil chemical fraction can provide information on the way in which these metals are bound to sediment and soil, their mobilization potential, bioavailability and possible mechanism of fluvial pollutant transport. Sequential extraction techniques yielding operationally defined chemical pools have been used by many workers to examine the partitioning of metals among the various geochemical phases of sediment or soil. The sequential extraction method specifies metals in sediment fractions as: exchangeable, specifically sorbed, easily reducible, moderately reducible, organic, residual. Previously, I have conducted a study on speciation of metals (Fe, Mn, Zn, Cu, Pb and Cd) in the dry season bed-load sediments only at five sites 13 km stretch upstream from the mouth of Nahr Ibrahim. The reported data revealed that the specifically sorbed sediment fraction was the prime fraction for deposition of Mn, Z, CU, Pb and Cd metals in sediments. X-ray diffraction analysis of bed sediments showed peaks only to calcite, dolomite and quartz. No speciation of metals in flood plain soils was done, nor XRD. The flood plain contains mostly terra rossa soils high in oxides and it is expected that the Ferric soil phase would have a major role in metal retention. The objective of this study is a complete hydro-geochemical survey of Nahr-Ibrahim catchment area and this study would clarify fluvial metal transport within the catchment area. The outcome of this work might assess the factors that influence water quality. This is attained through an improved knowledge of river hydrology, texture of sediment and soil, minerals in soil and sediment and soil and sediment geochemistry en_US
dc.language.iso en en_US
dc.publisher International nuclear information system en_US
dc.title A hydro-geochemical study of Nahr-Ibrahim catchment area en_US
dc.type Conference Paper / Proceeding en_US
dc.title.subtitle fluvial metal transport en_US
dc.author.school SAS en_US
dc.author.idnumber 197829160 en_US
dc.author.department Natural Sciences en_US
dc.description.embargo N/A en_US
dc.identifier.ctation Korfali, S. A hydro-geochemical study of Nahr-Ibrahim catchment area: Fluvial metal transport. en_US
dc.author.email skorfali@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://inis.iaea.org/search/search.aspx?orig_q=RN:36000905 en_US
dc.orcid.id https://orcid.org/0000-0002-2038-510X en_US
dc.publication.date 2004 en_US
dc.author.affiliation Lebanese American University en_US

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