Geochemical fractionation of heavy metals in Chilka Lake (east coast of India)?a tropical coastal lagoon

Panda, Dibya Sundar; Subramanian, V.; Panigrahy, R. C.

doi:10.1007/bf00770470

Cited by 77 publications

(48 citation statements)

References 39 publications

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“…The result indicates that considerable amount of Mn may be released into environment if conditions become more acidic . In addition, a considerable amount of Mn was detected in the reducible fraction, in which Mn exists as oxides and may be released if the sediment is subjected to more reducing conditions (Panda et al, 1995).…”

Section: Iron and Manganesementioning

confidence: 99%

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Yuan

Shi

et al. 2004

Environment International

428

171

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Twelve elements (V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Sn, Cd and Pb) in 24 sediment samples at eight sites (S1 -S8) from the East China Sea were analyzed with the BCR sequential extraction (SE) protocol to obtain the metal distribution patterns in this region. The results showed that the heavy metal pollutions in S4 and S8 were more severe than in other sampling sites, especially Cd and Pb pollution. In the top sediments at S4 and S8, both the total contents and the most dangerous non-residual fractions of Cd and Pb were extremely high. More than 90% of the total concentrations of V, Cr, Mo and Sn existed in the residual fraction. Fe, Co, Ni, Cu and Zn mainly (more than 60%) occurred in the residual fraction. While Mn, Pb and Cd dominantly presented in the non-residual fractions in the top sediments. The metal distribution patterns with depth and the correlations between total organic carbon (TOC) and the total Fe -Mn content were also investigated. The results showed that, for most of the elements except Fe, the concentration of elements in fraction A in the top sediments was higher than that in other depth. The similar rule was also found in fraction B but not in fraction C. Besides, the distributions of V, Cd in fraction B and Pb, Cd, Cu in fraction C might be affected by TOC. D

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Section: Iron and Manganesementioning

confidence: 99%

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Yuan

Shi

et al. 2004

Environment International

428

171

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“…Similarities were also found between fractionation patterns for Zn in the current study and in rapidly urbanising areas in China, with > 50% of the analyte released from most samples in the first two steps of the BCR extraction (Cai et al 2011;Qiao et al 2013). In contrast, Cu, Cr, Pb and Zn in sediments from the largest tropical lagoon in India, Chilka lake (Panda et al 1995) were dominantly associated with the residual fraction, suggesting that, at least in the mid 1990's when the study was conducted, the system was relatively unaffected by anthropogenic input.…”

Section: Sequential Extractionmentioning

confidence: 92%

Fractionation and ecotoxicological implication of potentially toxic metals in sediments of three urban rivers and the Lagos Lagoon, Nigeria, West Africa

Oyeyiola

Davidson

Olayinka

et al. 2014

Environ Monit Assess

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This version is available at https://strathprints.strath.ac.uk/49046/ Strathprints is designed to allow users to access the research output of the University of Strathclyde. Unless otherwise explicitly stated on the manuscript, Copyright © and Moral Rights for the papers on this site are retained by the individual authors and/or other copyright owners. Please check the manuscript for details of any other licences that may have been applied. You may not engage in further distribution of the material for any profitmaking activities or any commercial gain. You may freely distribute both the url (https://strathprints.strath.ac.uk/) and the content of this paper for research or private study, educational, or not-for-profit purposes without prior permission or charge.Any correspondence concerning this service should be sent to the Strathprints administrator: strathprints@strath.ac.ukThe Strathprints institutional repository (https://strathprints.strath.ac.uk) is a digital archive of University of Strathclyde research outputs. It has been developed to disseminate open access research outputs, expose data about those outputs, and enable the management and persistent access to Strathclyde's intellectual output. Application of risk assessment codes and Hankanson potential risk indices indicated that Cd was the element of greatest concern in the Lagos Lagoon system. The study indicated that there is a need to strengthen environmental management and pollution control measures to reduce risk from PTM, but that even relatively simple strategies, such as seasonal restrictions on dredging and fishing, could be beneficial.

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“…This may be the result of their great abundance, specific surface area, and stronger binding affinity (Wang et al 2012). A dominant proportion of Pb was found in the F5 fraction, in which Pb existed as oxides and may be released if the sediment was subjected to stronger reducing conditions (Panda et al 1995). It indicated that As and Pb could become toxic in the environment and pose a potential environmental hazard, when the right pH and redox conditions were favorable.…”

Section: Fractionation and Bioavailability Of Heavy Metalsmentioning

confidence: 99%

Geochemical speciation and pollution assessment of heavy metals in surface sediments from Nansi Lake, China

Yang

Wang

et al. 2015

Environ Monit Assess

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Sixteen surface sediment samples were collected from Nansi Lake to analyze geochemical speciation of heavy metals including Cd, As, Pb, Cr, and Zn, assess their pollution level, and determine the spatial distribution of the non-residual fraction. Results showed that Cd had higher concentrations in water-soluble and exchangeable fractions. As and Pb were mainly observed as humic acid and reducible fractions among the non-residual fractions, while Cr and Zn were mostly locked up in a residual fraction. The mean pollution index (P i ) values revealed that the lower lake generally had a higher enrichment degree than the upper lake. Cd (2.73) and As (2.05) were in moderate level of pollution, while the pollution of Pb (1.80), Cr (1.27), and Zn (1.02) appeared at low-level pollution. The calculated pollution load index (PLI) suggested the upper lake suffered from borderline moderate pollution, while the lower lake showed moderate to heavy pollution. Spatial principle component analysis showed that the first principal component (PC1) including Cd, As, and Pb could explain 56.18 % of the non-residual fraction. High values of PC1 were observed mostly in the southern part of Weishan Lake, which indicated greater bioavailability and toxicity of Cd, As, and Pb in this area.

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Geochemical fractionation of heavy metals in Chilka Lake (east coast of India)?a tropical coastal lagoon

Cited by 77 publications

References 39 publications

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Fractionation and ecotoxicological implication of potentially toxic metals in sediments of three urban rivers and the Lagos Lagoon, Nigeria, West Africa

Geochemical speciation and pollution assessment of heavy metals in surface sediments from Nansi Lake, China

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