الفهرس | Only 14 pages are availabe for public view |
Abstract Many forms of radiation are encountered in the natural environment.One of the primary toxic metals is uranium, which may get in food through plant, during its absorption by plant roots and accumulates in edible portions. This study deals with the plants that have the ability of uptake uranium and clean up the contaminated soil from radioactive elements. Artemisia judaica and Cleome droserifolia two wild plants collected from Wadi Nasib area, southwestern Sinai with their attached soil. Some wells samples around plants were also examined. This study is completed in order to understand the effect of radiation exposures. The uranium content in both plants was determined as well as the plants biochemical constituents (carbohydrates, lipids, and proteins) of the plants. The obtained data indicated that, uranium was not related to feldspar and or clay minerals but was mostly associated with iron. All wells water has low uranium content, so all wells are suitable for drinking. (100ppb is the permissible limited for drinking). Both plants uptake uranium but with different amounts. The radiation effect on the total soluble sugars was negative on both species while, no clear trend was observed for reducing and non reducing sugars in A. judaica and C. droserifolia species with uranium increase, which there was a passive effect on the total free proteins. No clear effect on the total lipids with no trends observed for the fatty acids concentration in both species. Key words: Radiation, Native plants, Artemisia judaica, Cleome droserifolia, Total lipids, Total protein, Total soluble sugars. |