Dynamics and quantification of dissolved heavy metals in the Mahanadi river estuarine system, India
作者： Sanjay Kumar Sundaray , Binod Bihari Nayak , Tapan Kumar Kanungo , Dinabandhu Bhatta
DOI: 10.1007/S10661-011-2030-X
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摘要: Dynamics of heavy metals such as Fe, Mn, Zn, Cr, Cu, Co, Ni, Pb, and Cd in surface water Mahanadi River estuarine systems were studied taking 31 different stations three seasons. This study demonstrates that the elemental concentrations are extremely variable most them higher than World river average. Among metals, iron is present at highest concentration while cadmium least. The spatial pattern suggests their anthropogenic sources possibly from two major fertilizer plants municipal sewage towns well agricultural runoff. temporal variations for like Pb exhibit values during monsoon season, which related to Concentrations exceed maximum permissible limits quality some polluted pose health risks. Dissolved a non-conservative behavior mixing, Co distribution conservative. Distribution region indicates mobilization may be due desorption. enrichment ratio data suggest various industrial wastes contribute dissolved River. transports 18.216 × 103 t total into Bay Bengal calculated rate erosion basin 128.645 kg km − 2 year 1.
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