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Speciation of metals in bed sediments and water of Qaraaoun Reservoir, Lebanon

Show simple item record Korfali S.I. Jurdi M.S.
dc.contributor.editor 2011 2017-10-18T13:31:59Z 2017-10-18T13:31:59Z 2011
dc.identifier 10.1007/s10661-010-1713-z
dc.identifier.issn 1676369
dc.description.abstract Determination of only total element in sediments does not give an accurate estimate of the likely environmental impacts. Speciation study of metals in sediment provides information on the potential availability of metals (toxic) to biota under various environmental conditions. In water, the toxic metal specie is the free hydrated metal ion. The toxicity of metals depends especially on their chemical forms rather than their total metal content. The present study focuses on Qaraaoun Reservoir, Lebanon. Earlier studies focused only on total metal concentrations in sediment and water. The objective of this study was to determine metal speciation (Fe, Cr, Ni, Zn, Cu, Pb, Cd) in the (operationally defined) sediment chemical fractions and metal speciation in reservoir water. This would reflect on metal bioavailability and toxicity. Water samples and bed sediments were collected from nine sites during the dry season and a sequential chemical fraction scheme was applied to the 75-μm sieve sediment fraction. Metal content in each fraction was determined by the FAAS technique. The data showed that the highest percentages of total metal content in sediment fractions were for: Fe in residual followed by reducible, Cr and Ni in residual and in reducible, Cu in organic followed by exchangeable, Zn in residual and in organic, Pb in organic and carbonate, Cd was mainly in carbonate. Total metal content in water was determined by ICP-MS technique and aqueous metal speciation was predicted using AQUACHEM software interfaced to PHREEQC geochemical computer model. The water speciation data predicted that a high percentage of Pb and Ni were present as carbonate complex species and low percentages as free hydrated ions, highest percentage of Zn as carbonate complex species followed by free hydrated ion, highest percentage of Cd as free hydrated ion followed by carbonate complex species. The sensitivity attempt of free hydrated ion of Ni, Zn, Pb, and Cd in reservoir water revealed dependence of Zn and Cd on pH and alkalinity, while Ni and Pb were only dependent on pH. © 2010 Springer Science+Business Media B.V.
dc.format.extent Pages: (563-579)
dc.language English
dc.publisher DORDRECHT
dc.relation.ispartof Publication Name: Environmental Monitoring and Assessment; Publication Year: 2011; Volume: 178; no. 41643; Pages: (563-579);
dc.source Scopus
dc.title Speciation of metals in bed sediments and water of Qaraaoun Reservoir, Lebanon
dc.type Article
dc.contributor.affiliation Korfali, S.I., Natural Science Division, Lebanese American University, Chouran Beirut: 1102, Beirut 2801, Lebanon
dc.contributor.affiliation Jurdi, M.S., Department of Environmental Health, Faculty of Health Sciences, American University of Beirut, P.O. Box 11-0236, Beirut, Lebanon
dc.contributor.authorAddress Korfali, S.I.; Natural Science Division, Lebanese American University, Chouran Beirut: 1102, Beirut 2801, Lebanon; email:
dc.contributor.authorCorporate University: American University of Beirut; Faculty: Faculty of Health Sciences; Department: Environmental Health;
dc.contributor.authorDepartment Environmental Health
dc.contributor.authorFaculty Faculty of Health Sciences
dc.contributor.authorInitials Korfali, SI
dc.contributor.authorInitials Jurdi, MS
dc.contributor.authorReprintAddress Korfali, SI (reprint author), Lebanese Amer Univ, Div Nat Sci, POB 13-5053,Chouran Beirut 1102, Beirut 2801, Lebanon.
dc.contributor.authorUniversity American University of Beirut
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dc.description.citedCount 5
dc.description.citedTotWOSCount 3
dc.description.citedWOSCount 3
dc.format.extentCount 17
dc.identifier.coden EMASD
dc.identifier.pubmedID 20865319
dc.identifier.scopusID 79960426883
dc.relation.ispartOfISOAbbr Environ. Monit. Assess.
dc.relation.ispartOfIssue 41643
dc.relation.ispartofPubTitle Environmental Monitoring and Assessment
dc.relation.ispartofPubTitleAbbr Environ. Monit. Assess.
dc.relation.ispartOfVolume 178
dc.source.ID WOS:000292162200047
dc.type.publication Journal
dc.subject.otherAuthKeyword Lebanon
dc.subject.otherAuthKeyword Metal
dc.subject.otherAuthKeyword Qaraaoun Reservoir
dc.subject.otherAuthKeyword Sediment
dc.subject.otherAuthKeyword Speciation
dc.subject.otherAuthKeyword Water
dc.subject.otherChemCAS cadmium, 22537-48-0, 7440-43-9
dc.subject.otherChemCAS carbonic acid, 3812-32-6, 463-79-6
dc.subject.otherChemCAS chromium, 14092-98-9, 16065-83-1, 7440-47-3
dc.subject.otherChemCAS copper, 15158-11-9, 7440-50-8
dc.subject.otherChemCAS iron, 14093-02-8, 53858-86-9, 7439-89-6
dc.subject.otherChemCAS lead, 13966-28-4, 7439-92-1
dc.subject.otherChemCAS nickel, 7440-02-0
dc.subject.otherChemCAS zinc, 14378-32-6, 7440
dc.subject.otherIndex Bed sediments
dc.subject.otherIndex Carbonate complexes
dc.subject.otherIndex Chemical forms
dc.subject.otherIndex Chemical fractions
dc.subject.otherIndex Computer models
dc.subject.otherIndex Dry seasons
dc.subject.otherIndex Environmental conditions
dc.subject.otherIndex Hydrated ions
dc.subject.otherIndex Lebanon
dc.subject.otherIndex Metal bioavailability
dc.subject.otherIndex Metal concentrations
dc.subject.otherIndex Metal content
dc.subject.otherIndex Metal speciation
dc.subject.otherIndex PHREEQC
dc.subject.otherIndex Qaraaoun Reservoir
dc.subject.otherIndex Reservoir water
dc.subject.otherIndex Sediment fraction
dc.subject.otherIndex Speciation
dc.subject.otherIndex SPECIATION Data
dc.subject.otherIndex Toxic metals
dc.subject.otherIndex Water samples
dc.subject.otherIndex Alkalinity
dc.subject.otherIndex Anoxic sediments
dc.subject.otherIndex Biochemistry
dc.subject.otherIndex Cadmium
dc.subject.otherIndex Cadmium compounds
dc.subject.otherIndex Carbonation
dc.subject.otherIndex Chemical speciation
dc.subject.otherIndex Chromium
dc.subject.otherIndex Environmental impact
dc.subject.otherIndex Hydration
dc.subject.otherIndex Metal ions
dc.subject.otherIndex Metals
dc.subject.otherIndex Sedimentology
dc.subject.otherIndex Toxicity
dc.subject.otherIndex Water content
dc.subject.otherIndex Zinc
dc.subject.otherIndex Copper
dc.subject.otherIndex cadmium
dc.subject.otherIndex carbonic acid
dc.subject.otherIndex chromium
dc.subject.otherIndex copper
dc.subject.otherIndex iron
dc.subject.otherIndex lead
dc.subject.otherIndex metal
dc.subject.otherIndex nickel
dc.subject.otherIndex zinc
dc.subject.otherIndex bioavailability
dc.subject.otherIndex computer simulation
dc.subject.otherIndex environmental conditions
dc.subject.otherIndex environmental impact
dc.subject.otherIndex geochemical method
dc.subject.otherIndex metal
dc.subject.otherIndex numerical model
dc.subject.otherIndex speciation (chemistry)
dc.subject.otherIndex toxicity
dc.subject.otherIndex alkalinity
dc.subject.otherIndex article
dc.subject.otherIndex atomic absorption spectrometry
dc.subject.otherIndex bioavailability
dc.subject.otherIndex concentration (parameters)
dc.subject.otherIndex controlled study
dc.subject.otherIndex environmental monitoring
dc.subject.otherIndex Lebanon
dc.subject.otherIndex mass spectrometry
dc.subject.otherIndex pH
dc.subject.otherIndex sediment
dc.subject.otherIndex water content
dc.subject.otherIndex water sampling
dc.subject.otherIndex water supply
dc.subject.otherIndex Environmental Monitoring
dc.subject.otherIndex Fresh Water
dc.subject.otherIndex Geologic Sediments
dc.subject.otherIndex Lebanon
dc.subject.otherIndex Metals
dc.subject.otherIndex Water Pollutants, Chemical
dc.subject.otherIndex Water Supply
dc.subject.otherIndex Beqaa
dc.subject.otherIndex Lebanon
dc.subject.otherIndex Qaraaoun Reservoir
dc.subject.otherKeywordPlus TRISTATE MINING DISTRICT
dc.subject.otherKeywordPlus HEAVY-METALS
dc.subject.otherKeywordPlus TRACE-METALS
dc.subject.otherKeywordPlus RIVER SEDIMENTS
dc.subject.otherKeywordPlus SURFACE WATERS
dc.subject.otherKeywordPlus CHEMICAL SPECIATION
dc.subject.otherKeywordPlus LEAD CONCENTRATIONS
dc.subject.otherKeywordPlus CONTAMINATED SOIL
dc.subject.otherWOS Environmental Sciences

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