Normalization of heavy-metal data from estuarine and coastal sediments

Loring, D. H.

doi:10.1093/icesjms/48.1.101

Cited by 391 publications

(176 citation statements)

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“…3). Fe and Al are regarded as markers of terrigenous materials because they are present in high concentrations in all continental sediments (Kennedy, 1986;Loring, 1991;Ravichandran et al, 1995). If we assume that corals do not incorporate Fe, Al, and Hg selectively and that the only source of inorganic Hg is that adsorbed onto sediment particles, then the ratios Hg/Fe and Hg/Al found in coral skeletons should be similar to those existing in the sediment particles carried to the sea by rivers and runoff.…”

Section: A Rainfall and Metal Markers For Runoffmentioning

confidence: 99%

Chronology of mercury enrichment factors in reef corals from western Venezuela

Ramos

Cipriani

Guzmán

et al. 2009

Marine Pollution Bulletin

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Section: A Rainfall and Metal Markers For Runoffmentioning

confidence: 99%

Chronology of mercury enrichment factors in reef corals from western Venezuela

Ramos

Cipriani

Guzmán

et al. 2009

Marine Pollution Bulletin

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“…There are two approaches to normalization of metals in sediment, the granulometric and geochemical methods [40]. The geochemical normalization is necessary standardized with alithogenic conservative element [41] [42].…”

mentioning

confidence: 99%

Changes of Estuarine Sedimentation Patterns by Urban Expansion: The Case of Middle Capibaribe Estuary, Northeastern Brazil

Barcellos¹,

Figueira²,

França³

et al. 2017

IJG

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The aim of this study is to describe the sedimentary evolution occurred during the last 200-years in the middle Capibaribe Estuary by mean of the sedimentary analysis (magnetic susceptibility, grain size, calcium carbonate, total organic matter-TOM) and geochemical parameters (sedimentation rates, heavy metal concentrations, enrichment and contamination factor) along a core. The core recorded four units and the measured sedimentation rate was 0.52 cm cm•y −1 . The first unit, dating before 1812, showed environmental characteristics of mangrove with predominance of fine sediments, high total organic matter percentages and heavy metal concentrations probably from natural sources. The second unit, from 1812 to 1937, showed a slight increase in sand percentages and decrease in fine fraction, TOM contents and heavy metals concentrations. These characteristics may be associated with the urban expansion processes and the presence of monoculture of sugar cane occurred in the middle Capibaribe Estuary. The third unit, from 1937 to 2004, showed the highest sand percentages of the core, characterizing a unit exclusively of sand with low fine fractions percentages, total organic matter contents and heavy metals concentrations. This unit represented the intensification of the urban processes expansion of Recife City. The fourth unit showed increases in fine fraction sedimentation, TOM contents and heavy metals concentrations. This new change in sedimentation probably is consequence of rebirth of marginal estuarine banks by mangrove vegetation, due to environmental projects carried out by Recife Prefecture in the early 2000's. It was not possible to register the anthropic contamination to middle estuary area probably due to the Barreiras Formation influences in the metal concentration records, masking the anthropic contamination inputs in estuarine region. Although, lead and arsenic showing an enrichment level indicating anthropic contamination.

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“…This fine-grained fraction is the main carrier of metals in sediments Horowitz, 1991). Ιn order to assess whether the observed high metal concentrations represent contamination of sediments, investigation of the relationships among concentrations of different metals and Fe (normalisation) was performed (Loring, 1991). This statistical procedure aims at the expression of the data on a uniform basis, after mathematically eliminating specific factors that is well known to cause variability, such as grain size distribution, carbonate content, organic carbon content, or mineralogy, the latter by the means of a conservative element.…”

Section: Metals Polyaromatic and Halogenated Hydrocarbonsmentioning

confidence: 99%

Marine monitoring along the eastern coastal area of the Island of Lesvos, Greece during 2004 in the Framework of MEDPOL III

2013

Global NEST Journal

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The present survey was carried out in the framework of MEDPOL Phase III (2004 -2006, aiming to provide recent information for the long-term monitoring of pollution trends in selected susceptible marine environments along the Mediterranean coastline. Information was collected from a network of four stations spaced out along the eastern coast of the Island of Lesvos, Greece, including a high risk station near the harbour of the city of Mytilini. Pollutants in abiotic components of the marine environment (seawater, sediment) as well as in selected marine organisms (M. barbatus and B. boops) were measured. It was found that there is no evidence of substantial pollution of the marine environment (seawater, sediment and fish) with respect to the pollutants measured. However, it was shown that although the uncontrolled discharge of untreated effluents has been reduced since the beginning of the operation of the Mytilini sewage treatment plant in 2001, sediments near the harbour of the city still carry increased loads of metals of anthropogenic origin. Furthermore, the small quantity of untreated sewerage that still flows out in the harbour of the city seems to affect water quality, since a higher mesotrophic character with eutrophic trends was observed in the area.

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Normalization of heavy-metal data from estuarine and coastal sediments

Cited by 391 publications

References 0 publications

Chronology of mercury enrichment factors in reef corals from western Venezuela

Chronology of mercury enrichment factors in reef corals from western Venezuela

Changes of Estuarine Sedimentation Patterns by Urban Expansion: The Case of Middle Capibaribe Estuary, Northeastern Brazil

Marine monitoring along the eastern coastal area of the Island of Lesvos, Greece during 2004 in the Framework of MEDPOL III

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