The present study was carried out mainly concentrate on assessment of heavy metal in the surrounding soils and their bioconcentration in the different plants near Kathajodi River. Soil and plant samples were collected along the Kathajodi river, Odisha, India. It was found that the dominance of heavy metals follows a decreasing order. The metal concentrations measured in soil at all location generally decreased in the order; Fe > Mn > Ni> Pb> Cu> Zn> Cd. Highest heavy metal concentration in river bank soil Cd (0.72±0.05 mgkg-1); Ni (3.85±0.15 mgkg-1); Cu (1.66±0.15 mgkg-1); Zn (1.54±0.16 mgkg-1); Pb (4.11±0.14 mgkg-1); Fe (142.0±1.16 mgkg-1); Mn (37.30±1.16 mgkg-1) at different site . Among all the grass species I. laxum has the higher affinity for the accumulation of Cd (0.85±0.05) followed by Zn, Pb and Cu. This study indicates that bio concentration of heavy metals in the study area show preferential Cd uptake in the plants followed by Zn, Pb and it may lead to accumulates in the exposed plant part posing risk along the food chain. This calls for immediate action to be implemented to carry out necessary environment mitigation measures for the river as it can be attributed the discharge of untreated domestic waste and effluents in the river.
Bioconcentration, Heavy metals, I. laxum, Kathajodi river, Soil
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