Effect of redox potential on heavy metal binding forms in polluted canal sediments in Delft (The Netherlands)

Kelderman, P.; Osman, Akhtar

doi:10.1016/j.watres.2007.05.058

Cited by 159 publications

(95 citation statements)

References 35 publications

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“…It can be seen that the heavy metal fractions are related to the characteristics of the applied sediments and the applied velocity. The F1 fractions of labile form were low for YLZ, which is consistent with previous studies (Kelderman and Osman, 2007). For example, the F1 fraction of Cu was only 3.03% as the percentage of total content in YLZ sediment, while high F1 fractions of Cu and Pb (10.84% and 13.74%, respectively) were found in the GBD sample, which could be ascribed to the pollution events.…”

Section: Heavy Metal Fractions In Sedimentssupporting

confidence: 90%

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Distribution of heavy metals in the water column, suspended particulate matters and the sediment under hydrodynamic conditions using an annular flume

Huang

Wang

2012

Journal of Environmental Sciences

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Section: Heavy Metal Fractions In Sedimentssupporting

confidence: 90%

“…To date, an increasing number of studies (Kelderman and Osman, 2007;Xue et al, 2006) have focused on heavy metal fractions in sediments, which should provide more information about environmental impacts on bioavailability. However, in these investigations, the hydrodynamic conditions were not adequately taken into consideration.…”

Section: Introductionmentioning

confidence: 99%

Distribution of heavy metals in the water column, suspended particulate matters and the sediment under hydrodynamic conditions using an annular flume

Huang

Wang

2012

Journal of Environmental Sciences

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“…The return to oxidizing conditions can lead to an increase in the availability and Fig. 6 Ratio of the 0.01 M CaCl 2 -extractable Cd pool as measured at harvest 1 (H1) relative to the same pool measured at harvest 2 (H2) at various pH levels between pH 4.5 and pH 7.5 uptake of metals (Daum et al 2001;Kelderman and Osman 2007), although the degree to which metals are bound or released by sulfides has been shown to be quite variable. Barret and McBride (2007) showed that an increase in the Cd/Zn ratio in soil reduced the metal scavenging effect of sulfides for Cd considerably.…”

Section: Discussionmentioning

confidence: 99%

Characterization of soil heavy metal pools in paddy fields in Taiwan: chemical extraction and solid-solution partitioning

et al. 2009

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Background, aim, and scope Ongoing industrialization has resulted in an accumulation of metals like Cd, Cu, Cr, Ni, Zn, and Pb in paddy fields across Southeast Asia. Risks of metals in soils depend on soil properties and the availability of metals in soil. At present, however, limited information is available on how to measure or predict the directly available fraction of metals in paddy soils. Here, the distribution of Cd, Cu, Cr, Ni, Zn, and Pb in 19 paddy fields among the total, reactive, and directly available pools was measured using recently developed concepts for aerated soils. Solid-solution partitioning models have been derived to predict the directly available metal pool. Such models are proven to be useful for risk assessment and to derive soil quality standards for aerated soils. , and directly available metal pools (0.01 M CaCl 2 ) were determined. Solid-solution partitioning models were derived by multiple linear regressions using an extended Freundlich equation using the reactive metal pool, pH, and the cation exchange capacity (CEC). The influence of Zn on metal partitioning and differences between both sampling events (May/November) were evaluated. Results Total metals contents range from background levels to levels in excess of current soil quality standards for arable land. Between 3% (Cr) and 30% (Cd) of all samples exceed present soil quality standards based on extraction with AR. Total metal levels decreased with an increasing distance from the irrigation water inlet. The reactive metal pool relative to the total metal content is increased in the order Cr << Ni = Zn < Pb < Cu < Cd and ranged from less than 10% for Cr to more than 70% for Cd. Despite frequent redox cycles, Cd, Pb, and Cu appear to remain rather reactive. The methods to determine the reactive metal pool in soils yield comparable results, although the 0.43 M HNO 3 extraction is slightly stronger than HCl and EDTA. The close correlation between these methods suggests that they release similar fractions from soils, probably those reversibly sorbed to soil organic matter (SOM) and clay. The average directly available pool ranged from less than 1% for Cu, Pb, and Cr to 10% for Ni, Zn, and Cd when compared to the reactive metal pool. For Cd, Ni, Zn, and to a lesser extent for Cu and Pb, solid-solution partitioning models were able to explain up to 93% (Cd) of the observed variation in the directly available metal pool. CaCl 2 extractable Zn increased the directly available pool for Ni, Cd, and Cu but not that of Pb and Cr. In the polluted soils, the directly available pool was higher in November compared to that in May. Differences in temperature, rainfall, and changes in soil properties such as pH are likely to contribute to the differences observed within the year. The solid-solution partitioning model failed to explain the variation in the directly available Cr pool, probably because Cr is present in precipitates rather than being adsorbed onto SOM and clay. Despite obvious differences in parent material, source of pollu...

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“…Mangrove sediments serve as a sink for heavy metals that may be released back to the water column by various remobilization processes as a consequence of equilibrium disruption [20][21][22]. 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].…”

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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Effect of redox potential on heavy metal binding forms in polluted canal sediments in Delft (The Netherlands)

Cited by 159 publications

References 35 publications

Distribution of heavy metals in the water column, suspended particulate matters and the sediment under hydrodynamic conditions using an annular flume

Distribution of heavy metals in the water column, suspended particulate matters and the sediment under hydrodynamic conditions using an annular flume

Characterization of soil heavy metal pools in paddy fields in Taiwan: chemical extraction and solid-solution partitioning

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

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