Variation of metals in bed sediments of Qaraaoun Reservoir, Lebanon.

Environmental Monitoring and Assessment
Samira Ibrahim KorfaliBrian E Davies

Abstract

The Qaraaoun Reservoir (impoundment of the River Litani) is the only artificial surface water body in the country, Lebanon. Earlier study on the water quality of the Qaraaoun Reservoir identified three water quality zoning with a central distinct zone suitable for multipurpose water usage. The objective of this study was to extend the earlier work by considering the total metal content of reservoir bed sediments and hence to evaluate factors that control metal deposition or capture. Water samples were collected from 15 sampling sites and sediment samples were simultaneously collected from 9 sites. Water parameters analyzed were pH, Eh, DO and temperature. Sediment samples were dried and sieved and sediment < 75 microm was retained for analysis. Sediments were subjected to a stepwise heating process with aqua regia to extract the metals, and their content in sediments determined by ICP-MS. The sediment data revealed higher metal contents where the river entered the reservoir which matched higher concentrations of water parameters at the influx site. Regression analysis of total metals in sediments with distance from the river Litani influx point to the dam revealed a log trend for Fe, Cr and Ni, whereas, the concentrations of Cu...Continue Reading

References

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Jul 26, 2002·Environmental Monitoring and Assessment·Mey JurdiBrian E Davies
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Aug 7, 2003·Environmental Geochemistry and Health·Samira Ibrahim Korfali, Brian E Davies
Aug 7, 2003·Environmental Geochemistry and Health·Andrew S HursthouseD Huw Vaughan

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Citations

Sep 25, 2010·Environmental Monitoring and Assessment·Samira Ibrahim Korfali, Mey S Jurdi
Jan 8, 2016·Environmental Science and Pollution Research International·Mahmoud Wazne, Samira Korfali
Aug 22, 2015·Environmental Monitoring and Assessment·Rawaa AmmarLei Chou

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