Secondary dispersion of trace elements in bottom sediments of the High Dam Lake, South Egypt and North Sudan

  • Mohamed Abdallah Gad DarwishEmail author
  • Hebert Pöllmann
Original Paper


Thirty-four chemical elements, pH, total nitrogen, and total organic carbon were determined in 49 bottom sediment samples from the whole High Dam Lake in order to improve our understanding of geochemical characteristics of these sediments and geochemical patterns of trace elements and related feeding sources. The present study revealed that the lake were clearly discriminated into three portions in accordance with the sediment geochemistry and geographic position. Likewise, the analyzed elements in the entire lake sediments were classified into six geochemical association patterns that are indicative of the contributing geogenic and anthropogenic sources. As has been noted here, mineralogy, anthropogenic inputs, pH, and organic matter had significant roles in controlling the behavior, concentration, dispersion, and geochemical patterns of the trace elements in the lake sediments. Consequently, the elevated concentration of Bi, Cd, Co, Cr, Cu, Fe, Ga, Mn, Mo, Ni, Sc, V, Y, and Zn posed moderate contamination level in the sediments. At the same time, the enhancement of Ag, Se, and Te levels caused contamination up to very high levels. Admittedly, the contamination levels were generated by natural and human activities that are coming from the Nile basin countries. Despite progressive deterioration of these sediments, they still have economic applications.


Secondary dispersion Statistical techniques Trace elements High Dam Lake South Egypt and North Sudan 

Supplementary material

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Supplementary Table 1 (XLS 34 kb)
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Supplementary Table 2 (XLS 34 kb)
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Supplementary Table 3 (XLS 30 kb)


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Copyright information

© Saudi Society for Geosciences 2018

Authors and Affiliations

  • Mohamed Abdallah Gad Darwish
    • 1
    Email author
  • Hebert Pöllmann
    • 2
  1. 1.Geology Department, Faculty of ScienceAswan UniversityAswanEgypt
  2. 2.Mineralogy and geochemistry department, Faculty of Science IIIHalle UniversityHalleGermany

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