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Total concentrations, fractionation and mobility of heavy metals in soils of urban area of Guwahati, India.
Environ Monit Assess. 2011 Feb; 173(1-4):221-40.EM

Abstract

This work describes the results of assessment of the heavy metals, Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn in urban soil of Guwahati City, India from 31 sites of five different land use types covering residential, commercial, industrial, public utilities, and roadside. Sequential extraction procedure was used to evaluate the relative distribution of the eight metals in exchangeable, carbonate, reducible (Fe-Mn oxide), organic and sulfide, and residual fractions. Of the eight metals, Cd and Co occur in lower concentrations (Cd<<Co) in all types of land, and concentration variation from one type of land use to another is not much significant for both the metals. Ni presence is more than Co, and the concentrations show some variation depending on land use status. Average Cr and Cu concentrations are ≥100 mg/kg, but Cr has a significantly higher presence in industrial land use. The results are similar in case of Pb. The two metals, Mn and Zn have domination over the other metals, and the values are ≥300 mg/kg. Industrial and roadside soil contains much more Mn, while commercial soil is most enriched with Zn. Of the metals, Ni has the largest proportion (~42%) bound to the exchangeable fraction and Co, Cr, and Pb also have appreciable proportion bound to the same fraction. A significant amount of Co is associated with carbonates. The reducible fraction has bound considerable quantity of Mn and Zn, while most of Cu is associated with the organic and sulfide fraction. Both Cd and Pb are dominantly associated with the residual fraction. Computation of the mobility factor of the metals indicates Mn to be the most mobile metal present in the soil samples.

Authors+Show Affiliations

Department of Chemistry, Gauhati University, Guwahati, 781014, Assam, India.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

20221795

Citation

Mahanta, Mayur J., and Krishna G. Bhattacharyya. "Total Concentrations, Fractionation and Mobility of Heavy Metals in Soils of Urban Area of Guwahati, India." Environmental Monitoring and Assessment, vol. 173, no. 1-4, 2011, pp. 221-40.
Mahanta MJ, Bhattacharyya KG. Total concentrations, fractionation and mobility of heavy metals in soils of urban area of Guwahati, India. Environ Monit Assess. 2011;173(1-4):221-40.
Mahanta, M. J., & Bhattacharyya, K. G. (2011). Total concentrations, fractionation and mobility of heavy metals in soils of urban area of Guwahati, India. Environmental Monitoring and Assessment, 173(1-4), 221-40. https://doi.org/10.1007/s10661-010-1383-x
Mahanta MJ, Bhattacharyya KG. Total Concentrations, Fractionation and Mobility of Heavy Metals in Soils of Urban Area of Guwahati, India. Environ Monit Assess. 2011;173(1-4):221-40. PubMed PMID: 20221795.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Total concentrations, fractionation and mobility of heavy metals in soils of urban area of Guwahati, India. AU - Mahanta,Mayur J, AU - Bhattacharyya,Krishna G, Y1 - 2010/03/11/ PY - 2009/08/18/received PY - 2010/02/11/accepted PY - 2010/3/12/entrez PY - 2010/3/12/pubmed PY - 2011/4/19/medline SP - 221 EP - 40 JF - Environmental monitoring and assessment JO - Environ Monit Assess VL - 173 IS - 1-4 N2 - This work describes the results of assessment of the heavy metals, Cd, Co, Cr, Cu, Mn, Ni, Pb, and Zn in urban soil of Guwahati City, India from 31 sites of five different land use types covering residential, commercial, industrial, public utilities, and roadside. Sequential extraction procedure was used to evaluate the relative distribution of the eight metals in exchangeable, carbonate, reducible (Fe-Mn oxide), organic and sulfide, and residual fractions. Of the eight metals, Cd and Co occur in lower concentrations (Cd<<Co) in all types of land, and concentration variation from one type of land use to another is not much significant for both the metals. Ni presence is more than Co, and the concentrations show some variation depending on land use status. Average Cr and Cu concentrations are ≥100 mg/kg, but Cr has a significantly higher presence in industrial land use. The results are similar in case of Pb. The two metals, Mn and Zn have domination over the other metals, and the values are ≥300 mg/kg. Industrial and roadside soil contains much more Mn, while commercial soil is most enriched with Zn. Of the metals, Ni has the largest proportion (~42%) bound to the exchangeable fraction and Co, Cr, and Pb also have appreciable proportion bound to the same fraction. A significant amount of Co is associated with carbonates. The reducible fraction has bound considerable quantity of Mn and Zn, while most of Cu is associated with the organic and sulfide fraction. Both Cd and Pb are dominantly associated with the residual fraction. Computation of the mobility factor of the metals indicates Mn to be the most mobile metal present in the soil samples. SN - 1573-2959 UR - https://www.unboundmedicine.com/medline/citation/20221795/Total_concentrations_fractionation_and_mobility_of_heavy_metals_in_soils_of_urban_area_of_Guwahati_India_ L2 - https://doi.org/10.1007/s10661-010-1383-x DB - PRIME DP - Unbound Medicine ER -