Black Carbon and Heavy Metal Contamination of Soil
Khageshwar Singh Patel1, Reetu Sharma1, Nohar Singh Dahariya1, Raj Kishore Patel2, Borislav Blazhev3, Laurent Matini4
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1School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India
2Department of Chemistry, National Institute of Technology, Rourkela, India
3Central Laboratory for Chemical Testing and Control, 1330 Sofi a, Bulgaria
4Department of Exact Sciences, Marien Ngouabi University, Brazzaville, Congo
Submission date: 2015-05-19
Final revision date: 2015-12-18
Acceptance date: 2015-12-19
Publication date: 2016-03-17
Pol. J. Environ. Stud. 2016;25(2):717-724
Black carbon (BC) and heavy metals (HMs) are of great interest to researchers due to their hazardous impact on the environment. Coal is a dirty fuel and its huge exploitation (mining and combustion) causes serious pollution of the environment. In this work, the contamination by BC and HMs of the soil of the coal basin in Korba, India, was evaluated. Higher concentrations of BC and Fe were detected in the soil samples, ranging (n = 9) from 4.5-7.3 and 4.1-9.3% with mean value of 5.5 and 6.6%, respectively. Concentrations of As, Cr, Mn, Cu, Zn, Cd, Pb, and Hg in the surface soil (n = 9) ranged from 91-116, 88-109, 2,423-5,063, 140-479, 128-377, 1.25-2.73, 858-4,973, and 0.88-2.37 mg kg-1 with values of 101±5, 98±5, 3409±721, 229±72, 227±48, 1.84±0.35, 2068±882, and 1.45±0.33 mg kg-1, respectively. Among HMs, Pb is extremely enriched in the soil. The main sources of HMs in the soil apportioned are coal burning and mining.
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