Raj Anshita, Singh Nandita
Eco-auditing Group, National Botanical Research Institute, Rana Pratap Marg, Lucknow, 226001, India,
Bull Environ Contam Toxicol. 2015 Mar;94(3):308-13. doi: 10.1007/s00128-015-1486-8. Epub 2015 Feb 10.
To investigate whether phytoremediation can remove arsenic from the contaminated area, a study was conducted for three consecutive years to determine the efficiency of Pteris vittata, Adiantum capillus veneris, Christella dentata and Phragmites karka, on arsenic removal from the arsenic contaminated soil. Arsenic concentrations in the soil samples were analysed after harvesting in 2009, 2010 and 2011 at an interval of 6 months. Frond arsenic concentrations were also estimated in all the successive harvests. Fronds resulted in the greatest amount of arsenic removal. Root arsenic concentrations were analysed in the last harvest. Approximately 70 % of arsenic was removed by P. vittata which was recorded as the highest among the four plant species. However, 60 % of arsenic was removed by A. capillus veneris, 55.1 % by C. dentata and 56.1 % by P. karka of arsenic was removed from the contaminated soil in 3 years.
为了研究植物修复是否能够从污染区域去除砷，连续三年开展了一项研究，以确定蜈蚣草、石韦、毛蕨和芦苇对从砷污染土壤中去除砷的效率。在2009年、2010年和2011年收获后，每隔6个月分析土壤样品中的砷浓度。在所有连续收获时还估算了叶的砷浓度。叶导致了最大量的砷去除。在最后一次收获时分析了根的砷浓度。蜈蚣草去除了约70%的砷，这在四种植物中记录为最高。然而，石韦去除了60%的砷，毛蕨去除了55.1%的砷，芦苇在3年中从污染土壤中去除了56.1%的砷。
