A comparison of metals in sediments and water in the River Nahr-Ibrahim, Lebanon

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dc.contributor.author Korfali, Samira Ibrahim
dc.contributor.author Davies, Brian E.
dc.date.accessioned 2015-11-07T10:00:24Z
dc.date.available 2015-11-07T10:00:24Z
dc.date.copyright 2003
dc.date.issued 2015-11-07
dc.identifier.issn 0269-4042 en_US
dc.identifier.uri http://hdl.handle.net/10725/2475
dc.description.abstract Rivers whose basins are underlain by carbonate rocks exhibit high pH, lower desorption of metals and possess high buffering capacity against acidic inputs to the river. The catchment of River Nahr-Ibrahim, Lebanon, is largely underlain by limestone. Compared to neighbouring countries, Lebanon is relatively fortunate since precipitation is high. However, recently a warming in temperature and a drop in precipitation has occurred, thus causing low water levels in rivers. The objective of this study is to investigate the variation of the total metal content (Fe, Mn, Zn, Cu, Pb and Cd) in bed sediments and water of River Nahr-Ibrahim between 1996 and 1999 (two years); and relate these variations to the effect of changes in human activities and/or due to the variations of precipitation rate, temperature and pH of water. Bed load sediments and stream water were collected simultaneously from five sampling sites. Water pH and temperature were determined in situ. Sediment samples were dried at room temperature and sieved; the sediment size < 75µm size was retained. Water was analysed for major constituents and trace metals. Metals were extracted from sediments with aqua regia. Metal concentration in water and sediments were determined using ICP-MS technique. Data revealed a drop in metal concentrations (Zn, Cu, Pb, Cd) in sediments at quarry site after its closure. The decrease in precipitation rate, lowering the level of water and the dilution of industrial discharges and decrease in water pH led most probably to the desorption of metals from sediments into the water. en_US
dc.language.iso en en_US
dc.title A comparison of metals in sediments and water in the River Nahr-Ibrahim, Lebanon en_US
dc.type Article en_US
dc.description.version Published en_US
dc.title.subtitle 1996 AND 1999 en_US
dc.author.school SAS en_US
dc.author.idnumber 197829160 en_US
dc.author.woa N/A en_US
dc.author.department Social Sciences en_US
dc.description.embargo N/A en_US
dc.relation.journal Environmental geochemistry and health en_US
dc.journal.volume 25 en_US
dc.journal.issue 1 en_US
dc.article.pages 41-50 en_US
dc.keywords Human activities en_US
dc.keywords Metal content en_US
dc.keywords Sediment en_US
dc.keywords Variation en_US
dc.keywords Water en_US
dc.identifier.doi http://dx.doi.org/10.1023/A:1021284126632 en_US
dc.identifier.ctation Korfali, S. I., & Davies, B. E. (2003). A comparison of metals in sediments and water in the River Nahr-Ibrahim, Lebanon: 1996 and 1999. Environmental Geochemistry and Health, 25(1), 41-50. en_US
dc.author.email skorfali@lau.edu.lb
dc.identifier.url http://link.springer.com/article/10.1023/A:1021284126632
dc.orcid.id https://orcid.org/0000-0002-2038-510X en_US

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