Toxic Metals Enrichment in the Surficial Sediments of a Eutrophic Tropical Estuary (Cochin Backwaters, Southwest Coast of India)
Joint Authors
Shaiju, P.
Muraleedharan, K. R.
Nair, S. M.
George, Rejomon
Martin, G. D.
Chandramohanakumar, N.
Source
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-05-03
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Medicine
Information Technology and Computer Science
Abstract EN
Concentrations and distributions of trace metals (Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, and Zn) in surficial sediments of the Cochin backwaters were studied during both monsoon and pre-monsoon periods.
Spatial variations were in accordance with textural charaterstics and organic matter content.
A principal component analysis distinguished three zones with different metal accumulation capacity: (i) highest levels in north estuary, (ii) moderate levels in central zone, and (iii) lowest levels in southern part.
Trace metal enrichments are mainly due to anthropogenic contribution of industrial, domestic, and agricultural effluents, whose effect is enhanced by settling of metals due to organic flocculation and inorganic precipitation associated with salinity changes.
Enrichments factors using Fe as a normalizer showed that metal contamination was the product of anthropogenic activities.
An assessment of degree of pollution-categorized sediments as moderately polluted with Cu and Pb, moderately-to-heavily polluted with Zn, and heavily-to-extremely polluted with Cd.
Concentrations at many sites largely exceed NOAA ERL (e.g., Cu, Cr, and Pb) or ERM (e.g., Cd, Ni, and Zn).
This means that adverse effects for benthic organisms are possible or even highly probable.
American Psychological Association (APA)
Martin, G. D.& George, Rejomon& Shaiju, P.& Muraleedharan, K. R.& Nair, S. M.& Chandramohanakumar, N.. 2012. Toxic Metals Enrichment in the Surficial Sediments of a Eutrophic Tropical Estuary (Cochin Backwaters, Southwest Coast of India). The Scientific World Journal،Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-512601
Modern Language Association (MLA)
Martin, G. D.…[et al.]. Toxic Metals Enrichment in the Surficial Sediments of a Eutrophic Tropical Estuary (Cochin Backwaters, Southwest Coast of India). The Scientific World Journal No. 2012 (2012), pp.1-17.
https://search.emarefa.net/detail/BIM-512601
American Medical Association (AMA)
Martin, G. D.& George, Rejomon& Shaiju, P.& Muraleedharan, K. R.& Nair, S. M.& Chandramohanakumar, N.. Toxic Metals Enrichment in the Surficial Sediments of a Eutrophic Tropical Estuary (Cochin Backwaters, Southwest Coast of India). The Scientific World Journal. 2012. Vol. 2012, no. 2012, pp.1-17.
https://search.emarefa.net/detail/BIM-512601
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-512601