Abstract
Phytoremediation is one of the methods for Bioremediation of the soils which has been noticed in recent decades. Two years sapling of Mulberry nigra selected and Mercury(II) nitrate solution with 30, 50 and 70 mg/L concentrations, after add solutions in to soil of sapling Mulberry nigra, eight months' later leaf, stem and roots were selected and Measuring mercury was determined by Atomic Absorption Spectrometer. The maximum level of mercury accumulation in the leaf, stem and root was 55.67, 50 and 65 mg/kg, respectively. Mercury could be absorbed easily by the plant's root and accumulated in the plants.
Highlights
Human sources for releasing the mercury to the environment is by secondary products of various industrial processes like coal burning, combustion of fossil fuels, mercurial vapor lamps and producing Chloralkali [1]
The obtained results from the research suggest that aerial organs of Mulberry nigra have had significant difference for mercury accumulation in various concentrations
About mercury accumulation in Acer velutinum, the results suggest that various contamination densities have been effective and by increasing mercury, accumulation level in the root is increased as well (Fig. 2) concluded in their research that the mercury is not a nutrient, could be absorbed by the plant’s root and accumulated in the plants with some concentrations which is harmful for food chain
Summary
Human sources for releasing the mercury to the environment is by secondary products of various industrial processes like coal burning, combustion of fossil fuels, mercurial vapor lamps and producing Chloralkali [1]. Phytoremediation is one of the methods for Bioremediation of the soils which has been noticed in recent decades In this method, resistant plants are used for refining the soils contaminated by organic and inorganic components. Resistant plants are used for refining the soils contaminated by organic and inorganic components The advantages of this method among the others are its simplicity, inexpensiveness and exploiting possibility in a broad level. The mercury is toxic and is absorbed by respiratory system and damages Stomach and intestines. Existence of this element in the air is harmful. The level of entered mercury into the environment has increased from the beginning of industrial era. Mercury emission caused by man activities in Asia has increased from about 30% of total universal emission to 56% [5,6,7]
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