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Articles by Syed Ali Hosseini
Total Records ( 2 ) for Syed Ali Hosseini
  Syed Abbas Hosseini and Syed Ali Hosseini
  The purpose of this study was the review of radio nuclides transfers to plant/soil by mycorrhizas, soil animals and soil microbes. Radio iodine 125 is as a surrogate of I-129 which has complex ecosystems because they can involve diverse reaction with soil type, plant species and vegetative. High variability is observed in radio iodine migration and redistribution patterns in contaminated soils. In the long term, the soil compartment represents the major reservoir of radio iodine which can give rise to long-term plant and hence food contamination. The contamination of various specific plant products has commonly been quantified using the transfer factor which integrates various environmental parameters including soil and plant type, root distribution as well as nature and vertical distribution of the deposits. Long lasting availability of some radio iodine was to be source of much transfer in plant/soil ecosystems in soils. Transport of radioiodine to lower layers proceeds very slowly. The experiment indicated that I 125 was mobile only within the saturated/low redox zone at the base of the soil column and accumulated in the zone of transition between anoxic and oxic soil conditions. Maximum contamination of tree components with radio iodine was associated with hydro morphic areas with thick humus layers. The rate of contaminant was being determined by the dynamics of radio iodine in aquatic ecosystems. A model had been developed by applying the selection of plant varieties used for animal feeding, the plants' growing cycles and harvests, the animal feeding practices and the human consumption rates for iodine radioactivity in soil, plants and animal products.
  Syed Abbas Hosseini , Syed Ali Hosseini and John Palan Javadi Mehr
  The sorption capability of the Sandy-Loamy soil for radio nuclides can be improved substantially by physical factors. Therefore, the present study was conducted to determine the effect of different temperatures on adsorption and desorption of radio iodine in the sandy-loamy soil. To the end, cultivated and non-cultivated soil samples were collected from Pardis (student’s dormitory) and Kalate razagh zadeh, in Zahedan, Iran. Furthermore, the samples were tested in batch experiments with radio iodide. Prior to the actual experiment phase, the samples were pre-treated under low and high temperature with 20 cc radio iodine 125. The results indicated that, an increase in temperature has a remarkable effect on iodide adsorption. In other words, in batch experiments with equilibrium temperatures of -10, -8, 0, 5, 60 and 70°C, iodide adsorption increases with increasing temperature. However, higher temperatures raise radio iodide adsorption only to a certain extent, but this is more pronounced for cultivated soils. In conclusion, the role of temperature was found to be the same as effects of organic matter in the soil.
 
 
 
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