Impact of anthropogenic input on physicochemical parameters and trace metals in marine surface sediments of Bay of Bengal off Chennai, India

Raju, K. V. S. B.; Vijayaraghavan, Kannan; Srinivasalu, S.; Jayaprakash, M.

doi:10.1007/s10661-010-1621-2

Cited by 28 publications

(6 citation statements)

References 53 publications

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“…1). The heavy metal concentration levels are comparable to those with previous studies [56][57][58] [35]. This clearly demonstrates an anthropogenic contribution and reveals a serious pollution of sediments in Jinzhou bay.…”

Section: Heavy Metal In the Sedimentssupporting

confidence: 87%

Spatially Explicit Analysis of Metal Transfer to Biota: Infl uence of Soil Contamination and Landscape

Asrari¹

2014

Heavy Metal Contamination of Water and Soil

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The purpose of this study is to investigate the current status of metal pollution of the sediments from urban-stream, estuary and Jinzhou Bay of the coastal industrial city, NE China. Forty surface sediment samples from river, estuary and bay and one sediment core from Jinzhou bay were collected and analyzed for heavy metal concentrations of Cu, Zn, Pb, Cd, Ni and Mn. The data reveals that there was a remarkable change in the contents of heavy metals among the sampling sediments, and all the mean values of heavy metal concentration were higher than the national guideline values of marine sediment quality of China (GB 18668-2002). This is one of the most polluted of the world's impacted coastal systems. Both the correlation analyses and geostatistical analyses showed that Cu, Zn, Pb and Cd have a very similar spatial pattern and come from the industrial activities, and the concentration of Mn mainly caused by natural factors. The estuary is the most polluted area with extremely high potential ecological risk; however the contamination decreased with distance seaward of the river estuary. This study clearly highlights the urgent need to make great efforts to control the industrial emission and the exceptionally severe heavy metal pollution in the coastal area, and the immediate measures should be carried out to minimize the rate of contamination, and extent of future pollution problems.

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Section: Heavy Metal In the Sedimentssupporting

confidence: 87%

Spatially Explicit Analysis of Metal Transfer to Biota: Infl uence of Soil Contamination and Landscape

Asrari¹

2014

Heavy Metal Contamination of Water and Soil

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“…The EF is a standard method for estimating the anthropogenic impact on sediments [25][26][27]. This ratio for sediments can be used as a contamination index by comparing the concentrations of selected metals with their base levels in sediments or suspended particles in local or global rivers.…”

Section: Methods For Estimating Pollutant Impact and Ecological Statementioning

confidence: 99%

Stream bottom sediments as a means to assess metal contamination in the historic mining district of Almadén (Spain)

García-Ordiales

Loredo

Esbrí

et al. 2014

International Journal of Mining, Reclamation and Environment

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Located in the southern half of Spain, Almadén is the world's largest Hg district and mercury has been mined there for over 2000 years. Its slag heaps and old metallurgy plants represent a risk to watercourses that flow through the district and receive the run-off from the mines. This study collected sediment samples along the length of the main watercourses in the mining district. High levels of heavy metals were detected, with Hg levels varying between 1.77 and 255.88 mg kg −1 , Pb levels between 20.59 and 131.07 mg kg −1 and Zn levels between 59.06 and 131.07 mg kg −1 . The dispersion of these heavy metals in rivers as a result of mining activities has caused sediment quality degradation. As such, when measured using reference indexes such as the SeQI and the EF, sediment quality for the entire district is practically poor, due to anthropogenic contributions, with the concomitant threat to the surrounding environment. IntroductionDecommissioned mercury mines represent a significant source of mercury (Hg) and also occasionally of other heavy metals in the environment as a result of the dumping of waste material originating from mines and metallurgy plants with a high concentration of Hg [1][2][3][4][5]. The metallurgical processing of Hg in mining districts has left a legacy of major mining liabilities as a result of the inefficient calcination of the mineral cinnabar. As this is an incomplete process, other types of soluble and insoluble compounds not originally present at the site, such as metacinnabar or mercury salts, are formed during the processing [6,7].The run-offs originating from the mining liabilities have an adverse effect on the ecosystems of the areas surrounding the mercury mines [8][9][10][11]. Stream-bed sediments and bodies of water located downstream from the mercury mines are characterised by significant levels of Hg and heavy metals, which can persist for decades after mining activities cease [5,7,12].The mining district of Almadén, located in south-central Spain, is the world's largest geochemical mercury anomaly, and it has produced one-third of total global production of this element [13]. The district includes a series of deposits with a range of structures and textures that share a relatively simple paragenesis whose dominant mineral is cinnabar, with pyrite present in lesser quantities. The most important mineralisation type, found in the mines of Almadén and El Entredicho, consists of stratabound cinnabar disseminations in Criadero Quartzite (Lower Silurian) [13]. Other type of mineralisation present in the area is composed of cinnabar filling veins and replacements of volcanic rocks that cannot be associated with specific stratigraphic layers [14,15]. Throughout its history, the district has been the site of various mines and metallurgy facilities. In terms of mines, Almadén is by far the largest and it has been the one most heavily mined, followed by El Entredicho, Las Cuevas and Nueva Concepción. In terms of metallurgy plants, some of them exist along the district, but two are the...

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“…The median concentration of Pb in the coastal sediment from this region was calculated to be $16 mg kg À1 (Table 2) and ranged from 0.1 to 130 mg kg À1 (Raju et al, 2011;Ravichandran and Manickam, 2012;Raj and Jayaprakash, 2007;Achyuthan et al, 2002;Satpathy et al, 2010;Dhanakumar et al, 2013;Ramesh et al, 1999;Kumar and Edward, 2009;Magesh et al, 2013Magesh et al, , 2011Venkatramanan et al, 2014;Subramanian and Mohanachandran, 1990;Anithamary et al, 2012;Jonathan et al, 2004;Sundararajan and Srinivasalu, 2010;Palanichamy and Rajendran, 2000). Charnockites acidic rock to intermediate composition associated with granites (Chattopadhyay and Sarkar, 1999) are the major natural sources of Pb in the coastal and estuarine sediments of this region.…”

Section: South-east Coastmentioning

confidence: 99%

Lead distribution in coastal and estuarine sediments around India

Chakraborty

Nath

2015

Marine Pollution Bulletin

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Impact of anthropogenic input on physicochemical parameters and trace metals in marine surface sediments of Bay of Bengal off Chennai, India

Cited by 28 publications

References 53 publications

Spatially Explicit Analysis of Metal Transfer to Biota: Infl uence of Soil Contamination and Landscape

Spatially Explicit Analysis of Metal Transfer to Biota: Infl uence of Soil Contamination and Landscape

Stream bottom sediments as a means to assess metal contamination in the historic mining district of Almadén (Spain)

Lead distribution in coastal and estuarine sediments around India

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