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Metal contaminations in sediment and associated ecological risk assessment of river Mahanadi, India

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Title Metal contaminations in sediment and associated ecological risk assessment of river Mahanadi, India
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Creator Srikanta Samanta
Vikas Kumar
Subir Kumar Nag
Rohan Kumar Raman
Keya Saha
Sudarsan Bandyopadhyay
Bimal Prasanna Mohanty
Basanta Kumar Das
 
Subject Heavy metals, Spatial distribution, Sediment quality guidelines (SQGs), Risk assessment, Mahanadi river
 
Description No-
Mahanadi is one of the major rivers of peninsular India. Like other Indian rivers, it is contaminated with sewages, industrial discharges, and agricultural runoff. Thus, necessity was felt to monitor its pollution status. Present work was part of that program and aimed to assess the sediment contamination due to the trace metals Cd, Cr, Cu, Mn, Pb, and Zn during 2012–2015. Sediment pollution status and ecological risks were evaluated calculating contamination factor (CF), geo-accumulation (Igeo), pollution load index (PLI), potential ecological risk (EiR), etc. The recorded metal concentrations were Cd BDL of flame mode of AAS; Cr BDL - 73.9; Cu BDL - 44.4; Mn 37.2 - 1887.0; Pb BDL - 29.5; and Zn BDL - 92.5 mg kg−1. As per US EPA guidelines, Cr concentrations at many locations were in the moderately polluted range. Igeo, CF, mCd, PLI, and EiR indicated low pollution levels and low ecological risks due to the trace metals assessed. The sediment quality guidelines (SQGs) indicated that Cr and Cu concentrations exceeded (16% sample) the threshold effect concentrations and may occasionally exhibit adverse biological effects. The association of sediment organic matter, conductivity and content of Cu, and their grouping in component 1 of PCA revealed that the anthropogenic input was dominant and so also the component 2 where Cr exhibited moderately good correlation with organic matter. Cluster analysis of the sampling sites based on pollution status yielded 3 groups: relatively uncontaminated (S3, S4), low to moderately contaminated (S2), and moderately contaminated (S1, S5, S6) stretches.
ICAR Central Inland Fisheries Research Institute, Barrackpore, Kolkata 700120
 
Date 2021-09-01T10:52:16Z
2021-09-01T10:52:16Z
2021-01-14
 
Type Research Paper
 
Identifier Samanta S.; Kumar V.; Nag S. K.; Raman R. K.; Saha K.; Bandyopadhyay S.; Mohanty B. P. and Das B. K. 2020. Metal contaminations in sediment and associated ecological risk assessment of river Mahanadi, India. Environmental Monitoring and Assessment. 192 (Suppl 1): 810 https://doi.org/10.1007/s10661-020-08708-1
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http://krishi.icar.gov.in/jspui/handle/123456789/61177
 
Language English
 
Relation Not Available;
 
Publisher Springer