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This is a factor that deserves more attention in future studies.The other factor which has a direct influence on the cadmium uptake by plants is zinc deficiency.There are few studies on the concentrations of silver in plant species.The severity of these processes <a href="http://www.targetmol.com/compound/Duloxetine-hydrochloride"></a> depends on chemical characteristics, and the minerals present in the tailings.Like that of silver, the prevalent mining activities in the area are one of the main sources of lead next to motor vehicles in the soils of the region.These metals are continuously dispersed downstream and downslope from the tailings by movement through wind. The presence of these formations in the study area may be one of the reasons for this higher than normal average levels of this element, though less than the standard values, in the region.Nickel is easily mobilized during the weathering however its mobility is inversely related to the soil pH. This finding confirms the results of the current research.All of the calculated bioconcentration factors were lower than one indicating the low amount of accumulation of heavy metals in wheat and barley.If the risk exceeds unity there will be a concern for potential health hazard for the consumers. Hazardous waste land treatment, SW. The values that exceeded standard levels were shown by bold font.As the level of fluoride in groundwater was less than the permissible level it may incur dental decay in groundwater consumers.In addition, because of low rainfall and high evaporation in these areas the recharge of groundwater is slow resulting in sluggish remediation of groundwater in case of contamination.This phenomenon has been exacerbated due to the recent droughts in the middleeast region.Among water quality parameters, nitrate is a natural ion and part of nitrogen cycle in the environment. Nitrate is a stable nitrogen form in well aerated systems.Despite its low chemical affinity it can be reduced by microbial activities as well.Biological and chemical activities can reduce nitrite to different forms or oxidize it to nitrate.Due to high solubility, nitrate has a high mobility in ground waters. Apart from the confirmed methemoglobinemia that is a resultant health impact of high levels of nitrate and the associated nitrite in drinking water, there are other inconclusive health outcomes related to nitrate such as cancer, hypertension, increased infant mortality, central nervous system birth defects, diabetes, spontaneous abortions, respiratory tract infections, and changes to the immune system. On the other hand, the prevalence of dental   fluorosis, which is caused by excess fluoride intake during the period of preemptive tooth formation, is also the direct consequence of high levels of fluoride in drinking water. However even though, minor values of this element can prevent dental decay so, it is added in negligible values to the drinking water in some countries.The body weight for the adults and children are and kg while the time for adults and children was and, respectively.Total alkalinity. However, apart from natural sources, a considerable amount of fluoride may be attributed to anthropogenic activities such as application of phosphorus fertilizers in agricultural fields. There are a number of anthropogenic sources for nitrate among them the most important one is intensive agricultural activities.

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