الفهرس 
Heavy Metals Accumulation and Translocation in Soil and Plant Due to Waste Water Irrigation in Egypt and Tunisia
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Abstract
Irrigation water always carries substances derived from its natural environment or from the wastewater products from different activities (domestic and industrial effluents). The present study was carrying out on El-Saff area, Egypt. The aim of study to evaluate the risk assessment of these negative effects of heavy metals to introduced in soil and some vegetable and crop products irrigated from that canal. Canal water, soil and plant samples were collect during summer and winter season of 2017. The collected data from field work survey were analyzed for interpretation the facts and causes of pollution of the selected locations. Data obtained revealed that all heavy metal concentrations under study in water and soil samples were still below the critical limits. The concentration of heavy metals in different plants were high for Fe; moderate for Mn; moderate to high for Zn and Cu as well as low for Cd and Pb. The parameter of mCd suggested that low degree in all sites at winter season except Arab Al Hesar site while in summer season was low degree of contamination at Arab Abu Said. The values of PLI were found to be generally (PLI < 1) in all sites except Arab Al Hesar site site in winter. EF was low values for each of Mn, Zn and Pb in all sites at two seasons. As well as (EF), the Cd was high to very high at different sites. The BCF was very high (>1) for all plants grown at area irrigated from that canal under study and soil affected by irrigation water which considered hyper-accumulator for (Fe, Mn, Zn, Cu and, Cd) at winter and summer seasons. Regard to (BCF), the for Pb was less than 1 for Alfa Alfa, Cabbage, Onion, Elephant forage, Eggplant and BCF (>1) at Wheat, Garlic, Arugula, Okra and Maize plants.