This study aims at determining the quantitative effect of pesticides including 2, 4-D dichlorphenoxy acetic acids, Paraquat, Atrazine (2-chloro-4-ethylamino-6-isopropylamino-striazine), and MCPP 2-(2-Methyl-4-chloroph...This study aims at determining the quantitative effect of pesticides including 2, 4-D dichlorphenoxy acetic acids, Paraquat, Atrazine (2-chloro-4-ethylamino-6-isopropylamino-striazine), and MCPP 2-(2-Methyl-4-chlorophenoxy) pro-panioic acid on groundwater quality due to agricultural in Jenin and Tulkarem, northern part of the West Bank. The concentrations of pesticides in Jenin was found to be higher than those in Tulkarem where the majority of the samples taken had concentration 10 μg/L. It is concluded that the contamination of the tested wells was due to pesticides and not wastewater disposal, since most of the samples were free from pathogenic indicators. Results revealed that using these wells for drinking purposes has a potentially high health risk. This is mainly due to the uncontrolled industrial and agricultural activity as well as the lack of monitoring. Concentrations of heavy metals including cadmium (Cd), lead (Pb), iron (Fe), zinc (Zn), chromium (Cr) and copper (Cu) were also quantitatively determined for the same period extending from April, 2004 to May, 2005. Concentrations of Pb and Cr in most of the tested wells in Tulkarem complied with the WHO guideline;while nitrate (NO3) and potassium (K) concentrations exceeded the permissible concentra-tions.展开更多
An artificial recharge test site was selected in the Jeftlik area of the foot prints of the Faria basin, in the Upper Jordan Rift Valley. The artificial pond infiltration type of 26 meters diameter and 2.85 meters dep...An artificial recharge test site was selected in the Jeftlik area of the foot prints of the Faria basin, in the Upper Jordan Rift Valley. The artificial pond infiltration type of 26 meters diameter and 2.85 meters depth was used. It is a hyperbolic form of 500 cubic meters volume. The integration parameters of hydrogeological settings, hydrochemical characteristics of allocated water bodies, geophysical investigations and the potentiality of the aquifer system in the area were used for the test area selection. The test site area lies within the shallow Pleistocene aquifer of 30-50 meters saturated thickness. One groundwater well of 19 m distance and two groundwater wells of 1 km far distance were used for the system monitoring. The filled water in the test system comes from the wadi water floods brought by 1.5 km of open canal. The sub-catchment is of 3 km2. The recharge rate within the Pleistocene aquifer was determined. This experiment is tested for the water quality type fillings of the first flushing water floods, the water flood in the middle of the winter season and the pumped water from other wells far away from the experiment.展开更多
文摘This study aims at determining the quantitative effect of pesticides including 2, 4-D dichlorphenoxy acetic acids, Paraquat, Atrazine (2-chloro-4-ethylamino-6-isopropylamino-striazine), and MCPP 2-(2-Methyl-4-chlorophenoxy) pro-panioic acid on groundwater quality due to agricultural in Jenin and Tulkarem, northern part of the West Bank. The concentrations of pesticides in Jenin was found to be higher than those in Tulkarem where the majority of the samples taken had concentration 10 μg/L. It is concluded that the contamination of the tested wells was due to pesticides and not wastewater disposal, since most of the samples were free from pathogenic indicators. Results revealed that using these wells for drinking purposes has a potentially high health risk. This is mainly due to the uncontrolled industrial and agricultural activity as well as the lack of monitoring. Concentrations of heavy metals including cadmium (Cd), lead (Pb), iron (Fe), zinc (Zn), chromium (Cr) and copper (Cu) were also quantitatively determined for the same period extending from April, 2004 to May, 2005. Concentrations of Pb and Cr in most of the tested wells in Tulkarem complied with the WHO guideline;while nitrate (NO3) and potassium (K) concentrations exceeded the permissible concentra-tions.
文摘An artificial recharge test site was selected in the Jeftlik area of the foot prints of the Faria basin, in the Upper Jordan Rift Valley. The artificial pond infiltration type of 26 meters diameter and 2.85 meters depth was used. It is a hyperbolic form of 500 cubic meters volume. The integration parameters of hydrogeological settings, hydrochemical characteristics of allocated water bodies, geophysical investigations and the potentiality of the aquifer system in the area were used for the test area selection. The test site area lies within the shallow Pleistocene aquifer of 30-50 meters saturated thickness. One groundwater well of 19 m distance and two groundwater wells of 1 km far distance were used for the system monitoring. The filled water in the test system comes from the wadi water floods brought by 1.5 km of open canal. The sub-catchment is of 3 km2. The recharge rate within the Pleistocene aquifer was determined. This experiment is tested for the water quality type fillings of the first flushing water floods, the water flood in the middle of the winter season and the pumped water from other wells far away from the experiment.
