Geochemical characteristics of the recent sediments from the Sea of Marmara

Bodur, Mehmet; Ergi̇n, Mustafa

doi:10.1016/0009-2541(94)90146-5

Cited by 33 publications

(18 citation statements)

References 59 publications

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“…The concentrations of the heavy metals studied increase significantly with silt and clay concentrations so that the relatively highest metal concentrations are concentrated in the fine-grained sediments. The enrichment of the fine silt and clay fraction (<0.063 mm) of the sediments by heavy metals is due to the large specific surface area of this fraction and to the strong adsorptive properties of clay minerals and organic materials (Frrstner et al, 1982;Bodur and Ergin, 1994). For example, during weathering and soil-forming processes, Mg in clay can be substituted by Mn, Ni and Zn.…”

Section: Metal Concentrations and Enrichments In Sedimentsmentioning

confidence: 97%

Heavy metal concentrations in surficial sediments from Wadi El Natrun saline lakes, Egypt

Taher

Soliman

1999

International Journal of Salt Lake Research

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Abstract. Heavy metal concentrations of Wadi E1 Natrun saline lakes were investigated. Pb, Zn, Mn, Cu, Cd, Ni, Fe and A1 were measured in surficial sediments. The heavy metal concentrations largely indicate the influence of weathering of terrigenous sources on land. In comparison with the average in sedimentary rocks, the concentrations of the heavy metals studied are higher than the global average sandstone. This is also reflected in the high enrichment factors. The heavy metal concentration in lakes II and III decrease in the order Pb > Zn > Cu, while in lake I the decreasing order is Cu > Zn > Pb. Sediments with microbial mats were found to concentrate heavy metals above background sediment values.

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Section: Metal Concentrations and Enrichments In Sedimentsmentioning

confidence: 97%

Heavy metal concentrations in surficial sediments from Wadi El Natrun saline lakes, Egypt

Taher

Soliman

1999

International Journal of Salt Lake Research

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“…The soil pH is generally low, signifying acidic soil while loamy soil characterize the top soil at the dumpsite and these condition enhances the precipitation and bio-accumulation of heavy metals in soil (Ujevic et al, 2000). Heavy metals have a strong affinity for organic content, clay and silt fraction because of their high cation exchange capacity (Bodur & Ergin, 1994;Zonta et al, 1994). The top-soil from the dumpsite comprises of organic content, clay and silt fraction.…”

Section: Discussionmentioning

confidence: 99%

“…Ademoroti (1990) ascertained that there is a positive linear correlation between heavy metals (Cd, Pb, and Ni) in the soil and vegetables grown on it. It has also been established that heavy metals have a high affinity for organic matter and clay soils (Bodur & Ergin, 1994;Zonta et al, 1994). The aim of this study was to examine the extent of heavy metal contamination in soils within Enyimba dumpsite.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Heavy Metal in Soils From Enyimba Dumpsite in Aba, Southeastern Nigeria Using Contamination Factor and Geo-Accumulation Index

Akobundu¹,

Nwankwoala²

2013

EER

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The manner in which municipal wastes generated are disposed in most urban areas in Nigeria is worrisome. The upsurge in population density and its resultant increase in urbanization and industrialization and the amount of waste generated in Aba, are of great concern. The objective of this research is to evaluate the concentration of some heavy metals in soils in the vicinity of Enyimba dumpsite in Aba, Nigeria. Thirty soil samples were collected and analyzed in the laboratory for some heavy metals by atomic absorption spectrophotometric method and multivariate statistical techniques. Twenty-five of the samples were obtained from the vicinity of the dumpsite while five samples are collected far away from the dumpsite to serve as control samples. The overall decreasing metal concentration in the dumpsite soil is: Cd > Co > Cu > Zn > As > Pb > Mn > Ni > Cr. A positive correlation exists between Cd and organic matter (r = 0.598). Geo-accumulation index and contamination factor showed a moderate contaminated with Cd only while the other metals are in their uncontaminated level. Factor analysis revealed four major components accounting for 78.82% of cumulative variance of the contamination: Cd, Cu, Co and organic matter; Pb, Zn and pH; Mn, As, clay + silt and finally Cr and Ni. From the above observations, it is evident that only Cd showed more pronounced level of pollution than any other metal. The need to replace open dumpsites with well designed sanitary landfills is advocated.

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“…On the other hand, numerous studies have been performed on the heavy metal levels in sediment samples (Ergin et al 1991;Bodur and Ergin 1994;Çağatay et al 1997a;Algan et al 1999;Balkıs et al 1999;Balkıs and Çağatay 2001).…”

Section: Introductionmentioning

confidence: 98%

Accumulations of total metal in dominant shrimp species (Palaemon adspersus, Palaemon serratus, Parapenaeus longirostris) and bottom surface sediments obtained from the Northern Inner Shelf of the Sea of Marmara

Kurun

Balkıs

2007

Environ Monit Assess

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The aim of this study is to determine the total metal (aluminum, copper, manganese, nickel, lead, zinc, cadmium, iron, mercury) contents of dominant shrimp species and sediments present at 1-50 m depths of the Northern Inner Shelf of the Sea of Marmara. Shrimp and sediment samples were collected from four regions (Büyükçekmece, Silivri, Tekirdağ, Sarköy) and from different depths (1, 5, 10, 20, 30, 50 m) at each region in September and November of 2003. Three shrimp species [Palaemon adspersus (Rathke, 1937), Palaemon serratus (Pennant, 1777), Parapenaeus longirostris (H. Lucas, 1846)] were identified to be dominant as a result of the examination on the obtained samples. Heavy metal contents of these three species were determined and the results were compared with the acceptable treshold values of the Seafood Standards and also with available literatures. The Cu contents were found to be higher than the treshold limits in all samples except P. longirostris from Silivri, also the Cd contents in all samples except P. adspersus from Büyükçekmece, the Zn contents only in P. adspersus and P. longirostris from Tekirdağ, and the Pb contents in all species from all regions. These high values are the indicator of industrial pollution. There is not any data in the Seafood Standards about Mn, Ni, Fe and Al contents in shrimp species. The values of these metal contents were given in the present study. The examination of total metal distributions in bottom surface sediment samples in the Northern Inner Shelf of the Sea of Marmara showed that the determined values were higher than the shale average at some depths of examined stations.

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Geochemical characteristics of the recent sediments from the Sea of Marmara

Cited by 33 publications

References 59 publications

Heavy metal concentrations in surficial sediments from Wadi El Natrun saline lakes, Egypt

Heavy metal concentrations in surficial sediments from Wadi El Natrun saline lakes, Egypt

Evaluation of Heavy Metal in Soils From Enyimba Dumpsite in Aba, Southeastern Nigeria Using Contamination Factor and Geo-Accumulation Index

Accumulations of total metal in dominant shrimp species (Palaemon adspersus, Palaemon serratus, Parapenaeus longirostris) and bottom surface sediments obtained from the Northern Inner Shelf of the Sea of Marmara

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