Study of phytoremediation of soil contaminated by cadmium and chromium and their bio-accumulation in spinach plant (Spinacia Oleracea)
Document Type : Research Paper
Authors
1 Post graduate Student of Environmen, University of Birjand, Faculty of Agriculture, Birjand, Iran.
2 Assistant Prof, Department of Environment, Faculty of Agriculture,University of Birjand, Iran.
3 Assistant Prof, Department of Soil Science, Faculty of Agriculture, University of Birjand, Iran
Abstract
In recent decades, Phytoremediation is one of the methods which has been a lot of attention. In this process by using of green plants can be removing or eliminate pollutants from water, soil and sediments. Therefore, to achievement the objective, this experiment was done in pot culture using completely randomized design with different levels of Cadmium concentrations (CdCl2.H2O) including 0, 5, 50, 100 mg kg-1 and also chromium concentrations (CrCl3): 0, 50, 100, 150 mg kg-1 with three replications. Spinacia Oleracea was used to remove or reduce the concentration of Cadmium and Chromium. Metals were determined by acid digestion method and atomic absorption set. Results were analyzed with SPSS (version 16) and Macro software. Tables and graphs were traced with Excel software. Results indicated that Cadmium and Chromium concentration in shoot significantly affected by their concentration in soil (P<0.01). Cd shoot concentration in Spinacia oleracea was increased by increasing of Cd in soil. Also, results showed that Cd and Cr root concentration was more than shoot. Therefore, according to the results, Spinacia oleracea is appropriate for absorption of Cadmium and Chromium in phytoremediation technology.
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