Sherif A.E.A., Kishar E.A. and Aya A. Taha( 2019). Environmental Assessment for Soils and Plants Irrigated from El-Mohett DrainInternational Journal of Environment ISSN 2077-4505
Volume : 08| Issue : 01 | Jan.-Mar. | 2019 Page:71-84
Abstract: The objective of this study was to evaluate the environmental risks of water, soils, and plans from the El-Mariouteya Canal and El-Rahawi drain at two seasons (summer and winter). To achieve this aim, were investigate the pH and electrical conductivity (EC) in water and soils, as well as sodium adsorption ratio (SAR) in water; some micro elements and heavy metals were estimated in both water; soils and plants. In addition to calculate of contamination factor (CF), degree of contamination (Cd), modified degree of contamination (mCd); pollution load index (PLI) and bioaccumulation factor of elements in plant. The obtained results indicated that the values of pH and (SAR) in the water were different from season to another season. The (EC) values were very high and unsuitable for irrigation in the summer season; while they were suitable to medium suitable for irrigation of winter season according to FAO (1985). Soil pH ranged from moderate to moderate alkaline and (EC) ranged from non-saline to
highly saline soils. However, boron, cadmium, cobalt, chromium, nickel and lead were within the safe limits. The total content of cadmium exceeded the safe limits in both seasons, but other elements were within the safe limits. The lowest concentration of iron, boron, cobalt and chromium were found in the Wheat plant. Manganese and nickel were found in the fruits of Eggplant, zinc and copper found in Cabbage. While the highest concentrations of iron, manganese, copper, cobalt, nickel and lead were found in Okra fruits. Also zinc, boron and chromium were found in Arugula plant. BCF indicates that most plants have more than 1 and indicate to high concentrations of heavy metals except Cd, Ni and Pb were not hyper-accumulator with all plants under studied at two seasons. The values of (CF) were low for both zinc, boron and lead and medium for copper and cobalt at all sites and low to medium with both iron, manganese, chromium and nickel indicating that this contamination is related to human activities. Modified contamination degree (mCd) is moderate to high in some sites. The (PLI) is generally high (> 1) in all sites; exception one site. The (PLI) was low (<1) in some sites in winter.
Keywords: (water, soil, plant, pollution, bioaccumulation risk assessment)
