Abstract:
Forty different pesticide and five heavy metals residues were
investigated in a variety of water and agricultural soil collected
from two different locations at Saudi Arabia during the periods in
2003 – 2004.
The results obtained from this study showed that most of the
analyzed water and soil samples contained different residues levels
of pesticides and heavy metals residues, according to detected
pesticides / heavy metals type, tested samples type and
sampling location, whereas the sampling intervals don’t play an
important role in this respect. Organochlorine pesticides, Cadmium
and Lead metals were the main contaminated of water and soil
samples, while some samples contained traces of other pesticides
groups, (Organophosphorous & pyrethroids pesticides) and other
tested metals (Chromium, Copper & Zinc) especially of soil
samples.
An experiment was conducted to estimate the persistence
behaviour of some common detected pesticides (Diazinon,
Chlorpyrifos- methyl, Endosulfan 1, λ- Cyhlothrin, Deltamethrin
and Cypermetrin ) in types of water different in hardness at different
.time intervals under outdoor / indoor conditions
The decontamination of these five mentioned pesticides
.residues from contaminated water by using natural adsorbents, i.e
charcoal, vermiculite, peat moss and ground nut hull were also
studied. The charcoal and ground nut hull ware satisfactory in
removing these pesticides residues from water more than
.vermiculite and peat moss
