Ecotoxicological impact assessment of heavy metals in core sediments of a tropical estuary

Harikumar, P. S.; Nasir, U. P.

doi:10.1016/j.ecoenv.2010.08.022

Cited by 83 publications

(43 citation statements)

References 30 publications

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“…The collected geochemical information of various elements not only provides an insight into the past and present environmental quality of the system but also serves as a baseline for future investigations (Badr et al 2009). In recent years, many studies have achieved success in using sediment cores to establish the effects of anthropogenic and natural processes on depositional environments in different water areas (Lavilla et al 2006;Chatterjee et al 2007;Harikumar and Nasir 2010;Tue et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches

Yang

Liu

Chen

et al. 2014

Environ Monit Assess

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Twenty-four major and trace elements and the mineralogical composition of four sediment cores along the Pearl River and estuary were analyzed using ICP-AES, ICP-MS, and X-ray diffraction (XRD) to evaluate contamination levels. The dominant minerals were quartz, kaolinite, and illite, followed by montmorillonite and feldspars, while small amounts of halite and calcite were also observed in a few samples. Cluster analysis (CA) and principal component analysis (PCA) were performed to identify the element sources. The highest metal concentrations were found at Huangpu, primarily due to wastewater treatment plant discharge and/or the surreptitious dumping of sludge, and these data differed from those of other sources. Excluding the data from Huangpu, the PCA showed that most elements could be considered as lithogenic; few elements are the combination of lithogenic and anthropogenic sources. An antagonistic relationship between the anthropogenic source metals (K, Ba, Zn, Pb, Cd, Ag, Tl, and U) and marine source metals (Na, Mg, Ti, V, and Ca) was observed. The resulting normalized Al enrichment factor (EF) indicated very high or significant pollution of Cd, Ag, Cu, Zn, Mo, and Pb at Huangpu, which may cause serious environmental effects. Conflicting results between the PCA and EF can be attributed to the background values used, indicating that background values must be selected carefully.

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Section: Introductionmentioning

confidence: 99%

Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches

Yang

Liu

Chen

et al. 2014

Environ Monit Assess

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“…3 for As, Cr, Hg, Ni, Pb and Zn in surficial samples of the lagoons. Reference data were separated into three major groups, to account for different anthropogenic pressures and environmental settings: industrial/urban areas (Tanner et al, 2000;Zago et al, 2001;Berg et al, 2001;Bellucci et al, 2002;Bertolotto et al, 2003;Adamo et al, 2005;Ferraro et al, 2006;McCready et al, 2006;Marmolejo-Rodriguez et al, 2007;Harikumar and Nasir, 2010;Nikolaidis et al, 2010), coastal areas (Taher and Soliman, 1999;Dauvalter and Rognerud, 2001;Zabetoglou et al, 2002;Sericano et al, 2001;Preda and Cox, 2002;Bertolotto et al, 2003;Kishe and Machida, 2003;Cuong and Obbard, 2006;Farkas et al, 2007;Nobi et al, 2007;Romano et al, 2010) and lagoons (Bellucci et al, 2002). The values measured in Vietnamese lagoons are by far among the lowest (up to one order of magnitude) of the entire set for all elements considered, being lower but comparable to other coastal systems.…”

Section: Depositional Settings and Organic Matter Originmentioning

confidence: 99%

Metals in Sediment Cores from Nine Coastal Lagoons in Central Vietnam

Shireesh¹

2012

American Journal of Environmental Sciences

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Problem statement: After being dramatically hit by war events, Vietnam is presently experiencing a huge economical and social development. However, very few data, relative to pollution levels and trends, are available for the correct management of critical areas such as coastal lagoons, where many economical activities are linked to high value environmental features. Approach: A set of sediment cores from nine coastal lagoons of central Vietnam (Lang Co, Truong Giang, An Khe, Nuoc Man, Nuoc Ngot, Thi Nai, O Loan, Thuy Trieu and Dam Nai) were sampled in 2008 and analyzed to assess metal and (Al, Cd, Cr, Cu, Fe, Hg, Li, Mn, Ni, Pb, V, U and Zn) and As levels and historical trends. Results: Concentrations are generally low, with the exception of As, which often exceeds ERL guidelines and Ni that does the same at O Loan. In some cases, concentrations-depth profiles account for recent increasing trends but surficial values are still low when compared to both international guidelines and polluted sediments all around the world. Sediment grain size seems to affect the depth distribution of a number of metals and when normalized to the content of silt and clay, values are particularly high at Dam Nai and Thi Nai, due to the very coarse composition of surficial sediments. Conclusion: Metal concentrations in lagoon sediments derive from the composition of rocks and soils in the watersheds. However, recent increasing trends need for further monitoring.

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“…Heavy metals can be mobilized from sediment if there is a change in physicochemical properties and consequently result in trophic transfer to detritivores and other higher level trophic organisms in the food web [23]. In addition, the accumulation of heavy metals in sediments may also produce harmful effects on the biota living in them [24,25]. In this environment, therefore, sediments can play a double role, both as a carrier and as a possible source of contaminants.…”

Section: Introductionmentioning

confidence: 99%

Geochemistry of Core Sediments from Tropical Mangrove Region of Tamil Nadu: Implications on Trace Metals

Kalaivanan¹,

Jayaprakash²,

Nethaji³

et al. 2017

J Earth Sci Clim Change

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The present study aims to determine the concentrations of certain trace metals (Fe, Mn, Cr, Cu, Pb, Zn, Co, Ni, Ba, Sr, V and Rb) and to identify the possible sources of the trace metals with multivariate analyses and assess the metal contamination using the enrichment factor (EF) and geo-accumulation index (I geo ) from the two core samples taken from Pichavaram lagoon. Pichavaram mangrove is a dynamic intertidal environment lying in between Vellar and Coleroon estuaries in Cauvery delta along the east coast of India. High OM in the present study is noted in both core samples which are mainly controlled by productivity and sediment texture. The increase of trace metals concentrations was observed at lower intersects which indicates that the trace metals were reprecipitated around the redox boundaries.Further it signifies that the enrichment of metals in C1 core sample is closely related to the diagenetic. Factor 1 with significant positive loadings on Mud and good loadings on Fe and Mn suggests the associations of these metals with finer sediment fractions and aluminosilicates. These elements to be enriched in the clay fraction in both core samples. They are mainly related to anthropogenic inputs and reflect the complexing nature of the organic matter. I geo studies confirm the contamination of the study area. Overall the study highlights significant anthropogenic contributions in terms of heavy metal pollution. Comparative data for normalized enrichment factors and the modified degree of contamination show that Pichavaram sediments have suffered significant systematic heavy metal contamination following catchment urbanization.

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Ecotoxicological impact assessment of heavy metals in core sediments of a tropical estuary

Cited by 83 publications

References 30 publications

Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches

Assessment of trace element contamination in sediment cores from the Pearl River and estuary, South China: geochemical and multivariate analysis approaches

Metals in Sediment Cores from Nine Coastal Lagoons in Central Vietnam

Geochemistry of Core Sediments from Tropical Mangrove Region of Tamil Nadu: Implications on Trace Metals

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