Investigating the Effect of Dimercaprol on Phytoremediation of Lead by Zea mays, Helianthus annuus, Sinapis arvensis

Document Type: Original Article

Authors

Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran

Abstract

 
Application of plants to remove heavy metals from soil (phytoremediation) is expanding due to its cost-effectiveness as compared to conventional methods and it has shown a great potential. Since contaminants such as Pb have a limited bioavailability in the soil, methods to facilitate their translocation to the shoots and roots of plants are required for efficient phytoremediation. The present pots experiment were to investigate the effect of Dimercaprolchelator with different concentration (0, 1.5, 3 mmol Dimercaprolchelator kg-1). Also different ranges of Pb (100, 200 mg Pb kg-1) and a control group were investigated for the amount of Pb accumulation, by corn (Zea mays), sunflower (Helianthus annuus) and mustard (Sinapis arvensis). The results showed that the amount of Pb accumulation increased as the Pb concentration was increased. Also the results of this experiment showed that the addition of Dimercaprolchelatoris most likely to increase the bioavailability of Pb and consequently the accumulation of this heavy metal in the shoots. The highest accumulation of Pb was noticed with the highest does of Dimercaprolchelator (3 mmol Dimercaprolchelator kg-1) and Pb (200 mg Pb kg-1) in the shoots of Helianthus annuus.

Keywords


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