Partitioning of trace metals before and after biological removal of metals from sediments

Chartier, Myriam; Mercier, Guy; Blais, Jean-François

doi:10.1016/s0043-1354(00)00404-8

Cited by 51 publications

(21 citation statements)

References 20 publications

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“…Selective extraction results ( Figure 5) showed the carbonate phase to adsorb a higher percentage of Pb and Zn compared to the other metals analysed and a similar pattern was also found for sediments from different origins (Chartier et al 2001). In Station 2 this phase was not detected.…”

Section: Exchangeable/carbonate Phasesupporting

confidence: 68%

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The Role of the Humic Substances in the Fractioning of Heavy Metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil

Fonseca

Neto

McAlister

et al. 2013

An. Acad. Bras. Ciênc.

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One of the main results of the processes related to urbanization is the contamination of the adjacent water bodies. Inserted in this context, the Rodrigo de Freitas lagoon is situated in the south zone of the city of Rio de Janeiro. This ecosystem receives several inputs containing all sorts of pollutants, including heavy metals. The present work aimed to study the partitioning of heavy metals in the sediments of Rodrigo de Freitas and the influence of organic matter in this fractionation dynamic. The results of these analyses presented the contents of organic matter as an important metal-capturing agent. Fractionation of organic matter resulted in a predominance of humine. Heavy metal partitioning showed that the metals bound by the water-soluble phase have no significant concentrations. Special features such as, reducing sediment, high levels of organic matter and fine grain size have transformed this ecosystem in an effective deposit of pollutants, where heavy metals are not available in easily reactive fractions.

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Section: Exchangeable/carbonate Phasesupporting

confidence: 68%

“…Costa (2001) has been recorded in a series of studies (Pardo et al 1990, LopezSanchez et al 1996, Chartier et al 2001, Galan et al 2003. Spearman analysis showed a significant correlation between Cu bound by the organic phase, humine (p=0.0009) and humic acid (p=0.03) and these results are similar to those recorded by Costa (op cit.).…”

Section: Organic Fractionmentioning

confidence: 93%

The Role of the Humic Substances in the Fractioning of Heavy Metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil

Fonseca

Neto

McAlister

et al. 2013

An. Acad. Bras. Ciênc.

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“…The most widely used methods are based on sequential extraction procedures whereby several reagents are used consecutively to extract operationally defined phases from the sediment in a sequence. For this study, the sequential extraction procedure proposed by the European Union's Standards, Measurements, and Testing program was taken in to consideration (Rauret et al 1999;Morillo et al 2002;Li et al 2007;Chartier et al 2001). This scheme consists of three successive extractions that allow us to associate the metals with one of the following phases: acid-soluble phase (fraction 1), reducible phase (fraction 2), oxidizable phase (fraction 3), and a fourth phase-residual or inert (fraction 4).…”

Section: Introductionmentioning

confidence: 99%

Evaluating the efficiency of sediment metal pollution indices in interpreting the pollution of Haraz River sediments, southern Caspian Sea basin

Nasrabadi

Bidhendi

Karbassi

et al. 2010

Environ Monit Assess

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The Haraz River is one of the most significant rivers in the southern Caspian Sea basin. Towards the estuary, the river receives discharges of industrial, agricultural, and urban wastes. In the present investigation, bulk concentrations of Cu, Zn, As, Cd, Pb, Fe, Ni, Cr, Co, and Sr in Haraz River (Iran) bed sediments were measured from several sample locations. In addition, association of studied metals with various sedimentary phases was assessed to determine the proportions of metals in different forms. The intensity of sediment contamination was evaluated using an enrichment factor (EF), geo-accumulation index (I(geo)), and a newly developed pollution index (I(poll)). Both EF and I(geo) formulae compare present concentrations of metals to their background levels in crust and shale, respectively. In a specific area with its own geological background like Haraz River water basin where naturally high concentrations of metals may be found, such a comparison may lead to biased conclusions regarding levels of anthropogenic contamination. Accordingly, chemical partitioning results are substituted for the mean crust and shale levels in the new index (I(poll)). The Pearson correlation coefficient between the anthropogenic portion of metallic pollution in Haraz river-bed sediments with I(poll) showed much more value in comparison with those of geochemical accumulation index and enrichment factor. The order of metals introduced by anthropogenic activities are as follows: Sr > Pb > Co > Cd > Zn > Cu > Ni > As > Cr > Fe. The results showed relatively higher concentrations of Cd, As, Sr, and Pb in comparison with those of shale. However, based on the chemical partitioning of metals, it is found that Sr, Pb, Co, and Cd are the most mobile metals. In spite of the high As concentrations in sediments, it is not likely that this element is a major hazard for the aquatic environment since it is found mainly in the residual fraction. Also, Fe, Cr, and Ni are present in the greatest percentages in the residual fraction, which implies that these metals are strongly linked to the sediments.

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“…Organic matter is a most significant sink for Cu in sediments. [43] Cu in the oxidisable-organic fraction is associated with biogenic carriers, which settle through the water column. [44,45] The number and intensity of binding sites vary among types of organic matter.…”

Section: Relation Between Oxidation-organic (Fraction 3) and Tommentioning

confidence: 99%

Distribution and contamination pattern of heavy metals from surface sediments in the southern part of Caspian Sea, Iran

Naji

Sohrabi²

2015

Chemical Speciation & Bioavailability

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This study concentrates on the speciation and distribution patterns of some heavy metals (Pb, Ni, Cd, Zn, and Cu) in surface sediments in the southern part of the Caspian Sea, the biggest lake in the world, to obtain an overall classification for the origins of metals in the area using a sequential extraction technique. At all sampling stations, Pb, Ni, Zn, and Cu were mostly (>50%) accumulated in the resistant fraction, which indicated that there were no significant anthropogenic inputs of Pb, Ni, Zn, and Cu into the surface sediments of the south Caspian Sea. Guilan province on the west coast of Caspian Sea accumulated higher percentages of non-resistant fractions of Pb and Zn, while Mazandaran and Golestan provinces in the middle and western parts of the Caspian Sea, in the Iranian zone, accumulated higher percentages of non-resistant fractions of Ni and Cu. The present study revealed that the coastal area of the south Caspian Sea is still not seriously contaminated. Cadmium in Guilan and Golestan provinces were dominated by non-resistant fractions (55-69%), which indicated more anthropogenic inputs of Cd on the south coast of the Caspian Sea in comparison with other metals.

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Partitioning of trace metals before and after biological removal of metals from sediments

Cited by 51 publications

References 20 publications

The Role of the Humic Substances in the Fractioning of Heavy Metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil

The Role of the Humic Substances in the Fractioning of Heavy Metals in Rodrigo de Freitas Lagoon, Rio de Janeiro - Brazil

Evaluating the efficiency of sediment metal pollution indices in interpreting the pollution of Haraz River sediments, southern Caspian Sea basin

Distribution and contamination pattern of heavy metals from surface sediments in the southern part of Caspian Sea, Iran

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