Pedo and biogeochemical studies of mafic and ultramfic rocks in the Mingora and Kabal areas,Swat, Pakistan |
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| Authors: | Mohammad Tahir Shah Shaheen Begum Sardar Khan |
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| Institution: | (1) National Centre of Excellence in Geology, University of Peshawar, Peshawar, Pakistan;(2) Department of Environmental Sciences, Fatima Jenah Women University, Rawalpindi, Pakistan;(3) Department of Environmental Sciences, University of Peshawar, Peshawar, Pakistan |
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| Abstract: | This study highlights the heavy metals (HMs) distribution in soils and their uptake by wild plants grown in the soils derived
from the mafic and ultramafic terrains. Plant and soil samples were analyzed for Cu, Pb, Zn, Cr, Ni and Cd using atomic absorption
spectrophotometer. The data indicate that almost all the HMs in the soil samples collected from the study area exceeded the
reference and normal agricultural soils. Greater variability was noticed in the uptake of HMs by various plants grown on the
studied soils. High concentrations of Cu and Zn in Cannabis sativa L. (seft hemp), Pb in Ailanthus altissima (Mill.) (Ailanto), Ni and Cr in Indigofrra gerardiana Wall. ex Baker (sage), and Saccharum griffihii Munro ex Boiss. (plume grass) were noticed among the studied plants. The multifold enrichments of Cr and Ni in the Indigofrra gerardiana and Saccharum griffihii as compared to the other plants of the study area suggested that these plants have the ability to uptake and translocate
high concentrations of Cr and Ni. The excessive concentrations of Cr and Ni in these plants can be used for mineral prospecting
but their main concern could be of serious environmental problems and health risks in the inhabitants of the study areas. |
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