PHYTOEXTRACTION OF SELECTED HEAVY METALS BY Ipomoea aquatica AND Pteridium aquilinum FROM ......
Anthropogenic heavy metal toxicity has become a human and environmental health concern, necessitating customised management measures. In order to investigate the phytoextraction potential of Ipomoea aquatica and Pteridium aquilinum as common plant macrophytes of Cd, Cu, Pb, and Zn from a human and surface environment health perspective, an ecological survey and a greenhouse-based study were done. In triplicate, a gramme of crushed and sieved samples from complete plants (root, stem, and leaves) were weighed and digested in aqua reqia. Using an atomic absorption spectrophotometer, the amounts of the four heavy metals in the digested plant samples were measured. The actual heavy metal concentrations (mg kg-1) in the soil I. aquatica were Zn (448)>Pb(349)>Cu(197)>Cd(1.2), and in the plant samples Pb(12)>Cu(9)>Zn(2.2)>Cd(1.2) (0.2). For P. aquilinum, soil samples had Cu(1040)>Zn(193)>Pb(85)>Cd(10) concentrations, whereas plant samples had Zn(195)>Pb(97)>Cu(43)>Cd(10) concentrations (12). The findings revealed that I. aquatica has a limited capacity for heavy metal phytoextraction and is less dangerous for human consumption. From the standpoint of environmental health, I. aquatica is not suited for phytostabilization, but P. aquilinum is more of an accumulator with a high potential. The high tolerance of these two plant macrophytes for heavy metal-affected soil has implications for revegetation, phytostabilization, and phytoextraction as management options for polluted surface settings.
Please see the link :- https://www.ikprress.org/index.php/AJOPSS/article/view/7248
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