الفهرس 
water pollution
results and discussionOnly 14 pages are availabe for public view
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Abstract
Egypt faces a combination of challenges in the water resources sector. In
order to properly tackle such problems, the drainage water quality should be
monitored to protect the water bodies and groundwater from pollution.
There is a lake of published data on the distribution of persistent organic
pollutants (POPs) in aquatic environment due to decrease the current
surveys to monitor the levels of these organic pollutants in drainage water
and groundwater. Therefore, these data gaps prompted the current
investigation to evaluate the levels of POPs in the Egyptian aquatic
environment.
POPs have become widespread in the environment and now represent a
global problem. They are a set of chemicals that are toxic; persist in the
environment for long periods of time, and biomagnifies as they move up
through the ecosystem. POPs include three major categories:
(1) Pesticides, such as organochlorine (OCPs), organophosphorous(OPPs),
organonitrogen (ONPs) and carbamate (CBs) which are used in the
agricultural for pest control.
(2) Polychlorinated biphenyls (PCBs), which were used in hundreds of
commercial applications, such as in electrical heater transfer, hydraulic
equipment, rubber products, plasticizers.
(3) Polynuclear aromatic hydrocarbons (PAHs), such as naphthalene and
pyre ne, which are produced unintentionally from most forms of combustion,
including municipal and medical waste incinerators, open burning of trash,
and industrial processes.