الفهرس 
Heavy metals pollution in water and sedimentOnly 14 pages are availabe for public view
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Abstract
Abstract
Abstract
In the present time, resources of freshwater occupy a top place
among other natural resources on the planet. Freshwater is distributed by
different amounts everywhere. Egypt is characterized by a dry climate,
scarce rainfall. The desert covers most of the land, and its water supplies
are uncertain. As the Egyptian water resources system is complex and
uncertain, thus the major challenge is to treat the problem of the rapidly
increasing gap between the limited water resources and the rising demand
for freshwater.
Several indices and human health risks were determined to assess
the potential ecological risk of the Nile River sediment. On the basis of
the index results, Cd registered the highest pollution ranking, whereas Fe,
Mn, Zn, Cu, and Ni had the lowest effect. In another context, southern
sites represented the lowest ecological risk relative to the central and
northern sectors. The results of the noncarcinogenic hazard indices,
hazard quotient, and hazard index in addition to the lifetime cancer risk
were below the acceptable international limits, confirming that there are
no adverse effects on the exposed population due to the Nile sediment.
This study deals with the results obtained on monitoring and
assessment of water samples collected from 23th stations along the river.
The stations were taken on equal distances about (35-40 km) between
each station and the other and a water sample was taken from the station
behind Aswan reservoir directly as a standard station for the rest of the
river water and the last station was in El-khanater El-khairia. Water
quality of the Nile River at area under investigation was investigated
according to CCME-WQI module which was used to evaluate the
drinking, irrigation and aquatic life water utilization