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- Title
Assessment of trace metal toxicity in soils of Raniganj Coalfield, India.
- Authors
Das, Supriyo Kumar; Chakrapani, Govind J.
- Abstract
Soil, rock and water samples were collected from India's oldest coalfield Raniganj to investigate trace metal contamination from mining activity. Our data reveal that trace metal concentration in soil samples lies above the average world soil composition; especially, Cr, Cu, Ni and Zn concentrations exceed the maximum allowable concentration proposed by the European Commission for agricultural soils. In particular, Cr, Cu and Ni exceed the ecotoxicological limit, and Ni exceeds the typical value for cultivated soils. Mineral dissolution from overburden material and high adsorption capacity of laterite soil are responsible for the elevated concentrations. This is evident from enrichment factor ( E), geoaccumulation index ( I) and metal pollution index values. Sediment quality guideline index indicates toxicity to local biota although enrichment index suggests no threat from consuming crops cultivated in the contaminated soil.
- Subjects
INDIA; TRACE metals; SOIL pollution; COPPER in soils; NICKEL in soils; ZINC; SOIL composition; EUROPEAN Commission; COALFIELDS
- Publication
Environmental Monitoring & Assessment, 2011, Vol 177, Issue 1-4, p63
- ISSN
0167-6369
- Publication type
Article
- DOI
10.1007/s10661-010-1618-x