Characteristics of a polluted artificial soil located along a motorway and effects of acidification on the leaching behavior of heavy metals (Pb, Zn, Cd)

Lee, Pyeong-Koo; Touray, Jean-Claude

doi:10.1016/s0043-1354(98)00110-9

Cited by 45 publications

(26 citation statements)

References 19 publications

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“…1). Carbonates and Fe-Mn oxides may be considered a major solubility controlling solid phase for these metals (Eary et al, 1990, Lee andTouray, 1998). In fractionation, we observed that a large proportion of Zn, Cd, Mn, Co and Ni in the sediments were present in the acid extractable and reducible fractions.…”

Section: Potential Leachabilitymentioning

confidence: 47%

“…Major mineral phases in soils and sediments control their leachate chemistry and therefore control trace metal leaching via various sorption processes (Eighmy et al, 1995). A fundamental knowledge of trace metal speciation is necessary to understand, model and predict long term leaching behavior of trace 5 metals in soils (Bridle et al, 1987;Lee and Touray, 1998 Long term leaching and migration of contaminants from improperly disposed wastes can result in contamination of both surface and ground water (Maskell and Thornton, 1998). During the assessment of environmental impacts from land disposal or utilization of dredged materials, an insight into the leaching behavior of trace metals in sediments after disposal becomes very important.…”

mentioning

confidence: 99%

“…Major mineral phases in soils and sediments control their leachate chemistry and therefore control trace metal leaching via various sorption processes (Eighmy et al, 1995). A fundamental knowledge of trace metal speciation is necessary to understand, model and predict long term leaching behavior of trace metals in soils (Bridle et al, 1987;Lee and Touray, 1998). Sequential extraction techniques have been widely used to determine the relative amounts of trace metals associated with various operationally defined chemical fractions in soils and sediments (Tack and Verloo, 1993;Ma and Rao, 1997).…”

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confidence: 99%

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Trace Metal Leachability of Land‐Disposed Dredged Sediments

et al. 2000

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The potential risk of surface and ground water contamination by trace metals leached from contaminated land disposed dredged sediment is a major environmental concern. The objective of this study was to evaluate trace metal leachability, leachate quality and environmental impacts of land-disposed dredged sediments. In addition to chemical characterization and determination of potential and actual leachability, dredged sediments were also subjected to solid phase fractionation using a sequential extraction procedure.Potential leachability, defined as the maximum metal pool that may become available for leaching at a constant pH 4, decreased in the following order: Zn ~ Cd > Mn > Ni > Co > Cu ~ As > Pb > Cr. Potential metal leachability was controlled mainly by solid phase distribution of metals in sediments. The acid extractable fraction of most metals correlated well with the potentially leachable metals extracted with a solution of pH 4 (r 2 > 0.67) except for Pb. The kinetics of metal release were determined using the cascade leaching test with water at pH 4. Except for Ni and Zn in the first fraction, metal concentrations in all consecutive leaching fractions remained below the maximum permissible level in water for human consumption. Actual metal leachability expressed as a percentage of potential leachability varied widely among trace metals and decreased in the order: As > Cu > Cr> Ni > Zn > Cd > Co > Pb. Our results indicate low risk of surface and ground water contamination resulting from land disposal of dredged sediments. 4Large quantities of sediments are dredged each year to clean and maintain the depth of navigational waterways, harbors and estuaries worldwide. In the Flemish region of Belgium alone, an average of 3,940,000 m 3 is disposed on land annually (Demoen, 1989). Land disposal of these dredged sediments may affect the surrounding environment due to the presence of harmful organic compounds and trace metals. Among other disposal alternatives such as sea dumping, landfilling and incineration, confined land disposal (upland disposal) is frequently adopted because of the increasing pressure to ban all sludge dumping at sea. Moreover, it is easy and cost effective. However, upland disposals may cause changes in their redox potential, pH and organic matter content of the land-disposed dredged sediments (LDDS). These physico-chemical changes may enhance the leachability and bioavailability of trace metals in sediment (Moore et al., 1988;Förstner, 1993;Gambrell, 1994), which may restrict the beneficial utilization of LDDS, particularly in landscape restoration, agriculture and construction.The leachability and bioavailability of trace metals in soils and sediments depend on their chemical and physical associations (Bubb and Lester, 1991; Tack and Verloo, 1993;Ma and Rao, 1997). Metals in soils and sediments may form specific mineral phases, be loosely bound on exchangeable sites, co-precipitate, be adsorbed onto mineral phases, be fixed by organic matter and sulfides or be structurally boun...

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Section: Potential Leachabilitymentioning

confidence: 47%

mentioning

confidence: 99%

“…Major mineral phases in soils and sediments control their leachate chemistry and therefore control trace metal leaching via various sorption processes (Eighmy et al, 1995). A fundamental knowledge of trace metal speciation is necessary to understand, model and predict long term leaching behavior of trace metals in soils (Bridle et al, 1987;Lee and Touray, 1998). Sequential extraction techniques have been widely used to determine the relative amounts of trace metals associated with various operationally defined chemical fractions in soils and sediments (Tack and Verloo, 1993;Ma and Rao, 1997).…”

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confidence: 99%

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Trace Metal Leachability of Land‐Disposed Dredged Sediments

et al. 2000

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“…Contamination of soil by heavy metals was investigated in [5], [6] and [7]. Contamination along a motorway was investigated in [5], in an industrial zone in Iran in [7], while an investigation along a highway in Slovenia is shown in [6].…”

Section: Introductionmentioning

confidence: 99%

“…Contamination along a motorway was investigated in [5], in an industrial zone in Iran in [7], while an investigation along a highway in Slovenia is shown in [6]. Usage of multivariate techniques for analysis of water quality is often used.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Heavy Metals Concentration in Wastewater along Highways in Croatia

Grd

Dobša

Šimunić-Mežnarić³

et al. 2012

CIT

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In this paper we have analysed concetrations of heavy metals (lead, copper, nickel, zink, mercury, cadmium, and chromium) in wastewater along highways in Croatia. We have used standard statistical methods: analysis of variance, Kruskal-Wallis test and principal analysis. Analysis of variance and Kruskal-Wallis test were used to detect factors that influence the concentration of lead, copper, nickel, and zink in wastewater. We have investigated the influence of the highway sampling location, the side of a highway, and the influence of the season of the year. Principal components were used to identify groups of elements with similar characteristics in wastewater.

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Chemical Speciation in Soils and Related Materials by Selective Chemical Extraction

Ure

Davidson

2002

Chemical Speciation in the Environment

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Characteristics of a polluted artificial soil located along a motorway and effects of acidification on the leaching behavior of heavy metals (Pb, Zn, Cd)

Cited by 45 publications

References 19 publications

Trace Metal Leachability of Land‐Disposed Dredged Sediments

Trace Metal Leachability of Land‐Disposed Dredged Sediments

Analysis of Heavy Metals Concentration in Wastewater along Highways in Croatia

Chemical Speciation in Soils and Related Materials by Selective Chemical Extraction

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