Int J Phytoremediation. 2014;16(7-12):1221-7. doi: 10.1080/15226514.2013.821452.
Arsenic is hazardous and causes several ill effects on human beings. Phytoremediation is the use of aquatic plants for the removal of toxic pollutants from external media. In the present research work, the removal efficiency as well as the arsenic uptake capacity of duckweed Lemna minor has been studied. Arsenic concentration in water samples and plant biomass were determined by AAS. The relative growth factor of Lemna minor was determined. The duckweed had potential to remove as well as uptake arsenic from the aqueous medium. Maximum removal of more than 70% arsenic was achieved atinitial concentration of 0.5 mg/1 arsenic on 15th day of experimental period of 22 days. Removal percentage was found to decrease with the increase in initial concentration. From BCF value, Lemna minor was found to be a hyperaccumulator of arsenic at initial concentration of 0.5 mg/L, such that accumulation decreased with increase in initial arsenic concentration.
砷是一种有害元素，会对人类造成多种不良影响。植物修复是利用水生植物从外部介质中去除有毒污染物。在本研究工作中，研究了浮萍浮萍去除水中有毒污染物的效率及其砷吸收能力。水样和植物生物量中的砷浓度采用原子吸收光谱法（AAS）测定。测定了浮萍的相对生长因子。浮萍具有从水介质中去除和吸收砷的潜力。在 22 天的实验期第 15 天，当砷初始浓度为 0.5mg/1 时，砷的最大去除率超过 70%。去除率随着初始浓度的增加而降低。从 BCF 值来看，浮萍在初始浓度为 0.5mg/L 的砷中被发现是砷的超富集体，随着初始砷浓度的增加，积累量减少。
