|
|
Pesticide hazard in irrigation water and means of its mitigation
|
|
|
Abstract: The current study was carried out in order to monitor theresidue levels of chlorinated pesticides in drains water from Kalubia and Dakahlia Governorates. The results showed thatthe residue level of Gamma-HCHin Kalubia drains was higher than the other isomers (alpha and beta HCH) in all samples. Chlorothalonil was detected in Kafr-Abed, p,p,DDE eas higher than p,p,-DDD and p,p,-DDT in all water samples. In Dakahlia drains Gamma-HCH was higher than alpha and beta HCH. An exception was noticed in beta-HCH residues from Dondate drains. Dieldrin showed that highest residue level in selica being 12.77 ppb. Herbicide residues in the drains under investigation showed that all were contaminated with Dithiopyr at variable levels. Bensulfuron-methyl was not detected in any drains from the samples collected in the two governorates. Also the role of the water-hyacinth plant in the removal of some serious heavy metals from the water system was noticeable. Data clearly showed that water in Marioteia drain was contaminated with contained a higher concentration of lead than the Mansoureia canal in Giza governorate, but cadmium and copper concentrations were lower in it. Lead and copper levels were found to be higher in water-hyacinth than in spinach and lettuce in both Marioteia and Mansoureia locations. While cadmium levels were less in this plant than in the other two vegetable plants in the same two locations. These data indicated that water-hyacinth accumulates more heavy meals from the water system than any other crop. It removes some serious heavy metals and cleans the water.
|
| Publication year |
2002
|
| Organization Name |
|
| Country |
Egypt
|
| Department |
Pesticide Phytotoxicity
|
| Author(s) from ARC |
|
| Publication Type |
PhD Thesis
|