الفهرس 
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Abstract
Industrial development in Egypt has been grown significantly during the
last two decads. Most of these industrial factories lie in and around the
agricultral rand The discharge of these factories into the en, .. onment can
give rise to poHution problems in air, water and soil . Whereas , the wastes of
these factories are mainly loaded with heavy metals such as Fe, Mn, Zn, Cu,
Pb, Cd, and Co, which pumped either into the River Nile, irrigation canals or
directly onto the surrounding soils. A possible long - term problem as a result
of irrigation with these wastes is that toxic materials or salinity may build up in
the soil. As such concentration of the heavy metals in the soil will increase
with time and, after many years of irrigation , it is possible that levels will be
reached at which crops Will take up such pollutants at concentrations where
toxic to plants and men . Also, salinization of soil could be expecled when
the soil irrigated with saline waste water over the long term.
In Egypt, there are several factories established in and around the River
Nile . Such as El- Ahlyia Co. for Metalic Workings and Abu Zabal Co. for
Chemicals and Fertilizers situated close to lsmailyia CanaL Also, Alexandria
Co. for Oils and Soap and El· Siuf Electric Power Station situated close to El
- Mahmoudia Canal. The discharge of these factories pumbed into lsmailyia
and El - Mahmoudia Canals . As <”! result of the intrusion of a big amounts of
these industrial wastes involver:! heavy metals into ecosystem, drastic
deterioration in soil as well as in pl~mt may be occured .