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Abstract
A phytoremediation study was carried out with eight weed species commonly grown in Bangladesh to develop an appropriate phytoremediation technology for the farmers of arsenic affected areas of Bangladesh. The soil was collected from the previous step of phytoremediation study. Initially the soil was treated with seven As levels viz. 0, 10, 20, 30, 50, 70 and 100 mg kg-1 arsenic as sodium arsenite (NaAs02). The residual soils after a series of phytoremediation study were used for the present study. In all weeds, the concentration of arsenic increased with increasing soil arsenic levels. While considering the interaction effect of As with other elements it was found that, with the increase of As concentration, the concentrations of the phosphorus and sulphur also increase both in root and shoot of the weeds. On the other hand, As reduces the uptake of calcium by the weeds.