title: Ecological Risk Assessment of Metals Contamination in the Sediments of Natural Urban Wetlands in Dry Tropical Climate.
abstract: The pollution load due to metal contamination in the sediments of urban wetlands (Dhanbad, India) due to illegal release of domestic and industrial wastewater was studied by using various geochemical indices, such as contamination factor (Cf), degree of contamination (Cd), modified degree of contamination (mCd), pollution load index (PLI) and geoaccumulation index (Igeo) for Cu, Co, Cd, Cr and Mn. Cluster analysis (CA) and Principal component analysis (PCA) of metals present in wetland sediments were carried out to assess their origin and relationship with each other. The Cf values for different metals in the wetlands under investigation indicated low to very high level of pollution (Cf ranged between 0.02 and 14.15) with highest Cf (14.15) for Cd. The wetland receiving both domestic and industrial wastewater had the highest values of Cd, mCd and PLI as 17.48, 3.49 and 1.03 respectively.
authors.affiliation: Department of Environmental Science and Engineering, Indian School of Mines, Dhanbad, Jharkhand, 826004, India.
authors.forename: Vivek
authors.initials: V
authors.lastname: Rana
authors.affiliation: Department of Environmental Science and Engineering, Indian School of Mines, Dhanbad, Jharkhand, 826004, India. skmism1960@gmail.com.
authors.forename: Subodh Kumar
authors.initials: SK
authors.lastname: Maiti
authors.affiliation: Department of Environmental Science and Engineering, Indian School of Mines, Dhanbad, Jharkhand, 826004, India.
authors.forename: Sheeja
authors.initials: S
authors.lastname: Jagadevan
mesh_terms: D016000:Cluster Analysis; D004787:Environmental Pollution / Q000032:analysis*; D019015:Geologic Sediments / Q000737:chemistry*; D007194:India; D019216:Metals, Heavy / Q000032:analysis*; D018570:Risk Assessment; D014329:Tropical Climate; D014507:Urbanization; D062065:Wastewater / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis; D053833:Wetlands
chemical_list: D019216:Metals, Heavy; D062065:Wastewater; D014874:Water Pollutants, Chemical
keywords: Contamination factor; Degree of contamination; Geoaccumulation index; Pollution load index