Metal sequential extraction procedure optimized for heavily polluted and iron oxide rich sediments

Gómez-Ariza, José Luis; Giráldez, Inmaculada; Sánchez-Rodas, Daniel; Morales, E.

doi:10.1016/s0003-2670(00)00804-7

Cited by 85 publications

(51 citation statements)

References 21 publications

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“…Following these two basic schemes, some modified procedures with different sequences of reagents or operational conditions have been developed (Borovec et al, 1993;Campanella et al, 1995;Zdenek, 1996;Gomez Ariza et al, 2000). Considering the diversity of procedures and lack of uniformity in different protocols, a BCR (now the European Community (EC) Standards Measurement and Testing Programme) method was proposed (Ure et al, 1993).…”

Section: Introductionmentioning

confidence: 99%

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Yuan

Shi

et al. 2004

Environment International

426

171

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Twelve elements (V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Mo, Sn, Cd and Pb) in 24 sediment samples at eight sites (S1 -S8) from the East China Sea were analyzed with the BCR sequential extraction (SE) protocol to obtain the metal distribution patterns in this region. The results showed that the heavy metal pollutions in S4 and S8 were more severe than in other sampling sites, especially Cd and Pb pollution. In the top sediments at S4 and S8, both the total contents and the most dangerous non-residual fractions of Cd and Pb were extremely high. More than 90% of the total concentrations of V, Cr, Mo and Sn existed in the residual fraction. Fe, Co, Ni, Cu and Zn mainly (more than 60%) occurred in the residual fraction. While Mn, Pb and Cd dominantly presented in the non-residual fractions in the top sediments. The metal distribution patterns with depth and the correlations between total organic carbon (TOC) and the total Fe -Mn content were also investigated. The results showed that, for most of the elements except Fe, the concentration of elements in fraction A in the top sediments was higher than that in other depth. The similar rule was also found in fraction B but not in fraction C. Besides, the distributions of V, Cd in fraction B and Pb, Cd, Cu in fraction C might be affected by TOC. D

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Section: Introductionmentioning

confidence: 99%

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Yuan

Shi

et al. 2004

Environment International

426

171

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“…This analytical procedure involves sequential chemical extractions separating trace metals into five fractions: exchangeable, bound to carbonates, bound to Fe-Mn oxides, bound to organic matter, and residual. Simplified sequential extraction methods have also been developed for practical applications (Aten and Gupta, 1996;Cai et al, 2002;Gomez-Ariza et al, 2000;Gupta et al, 1996;Pantsar-Kallio and Manninen, 1997). For example, the three-level evaluation system, which separates metals into mobile, mobilizable, and pseudo total metal fractions, seems to be attractive because of its simplicity and potential application in risk assessment and risk management .…”

Section: Introductionmentioning

confidence: 99%

Extraction of arsenate and arsenite species from soils and sediments

Georgiadis

Cai

Solo‐Gabriele

2006

Environmental Pollution

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The primary objective of this study was to develop a simple method that can be used to extract the more readily mobilizable and bioavailable arsenic species from soil and sediment while at the same time minimizing the transformation between (As III ) and (As V ), the two most commonly found arsenic species in the environment. Several extraction strategies were evaluated using phosphate as extractant in combination with either ethylenediaminetetraacetic acid (EDTA), hydroxylamine hydrochloride (NH 2 OH·HCl), or sodium diethyldithiocarbamate trihydrate (NaDDC).The addition of EDTA in the phosphate solution did not prevent As III from oxidation. While promising results were shown when 1% NH 2 OH·HCl was added, conversion of As III began to occur with extended extraction time (>12 h). Good results were achieved using 10 mM phosphate and 0.5% NaDDC where As III oxidation was clearly minimized. The combined phosphate and NaDDC solution was applied to several soil and sediment samples. As III spiked was quantitatively recovered in all soil types tested.

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“…It has been the subject of a number of variations [18][19][20][21]. Briefly, the procedure is as follows: fractions 1 to 3 (F1-F3) are the results of extraction with ammonium acetate, a reductive solution made of hydroxylamine hydrochloride in acetic acid, and hydrogen peroxide in a nitric medium, respectively, whereas fraction 4 (F4) is the insoluble residue remaining after the three extractions (Table 4).…”

Section: Assessing the Hazardousness Of Metals In Soilmentioning

confidence: 99%

Assessing Soil Quality in Areas Affected by Sulfide Mining. Application to Soils in the Iberian Pyrite Belt (SW Spain)

2011

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Abstract:The characterization, evaluation and remediation of polluted soils is one of the present environmental challenges to be addressed in the coming years. The origin of trace elements in soils can be either geogenic or anthropogenic, but only the latter is interesting from a legal point of view. The hazard of the pollutants in the soils not only depends on their total concentration, but particularly on their availability. The mobility of the trace elements depends on their speciation, and it is also affected by several soil parameters. Mining activity is one of the most important anthropogenic causes of soil pollution. As a case study, this work is focused in the Riotinto mining area (Iberian Pyrite Belt, IPB, SW Spain). The IPB is one of the most important metallogenic provinces in the world and it has been exploited for thousands of years. The disposal of mining residues has produced important sources of contamination by trace elements and acidic waters affecting soils and rivers. In addition to these problems, the closure of mines in the Pyrite Belt at the end of the 20th Century has led to a great loss of employment, which has caused the development of an intensive agriculture of citrus fruits as a new source of income. The intensive growing of citrus fruits and the traditional subsistence agriculture have been developed surrounding the mining areas and on floodplains near to mining sites. The level of soil pollution has not been taken into account in these cases, nor has its impact on the health of the inhabitants of these areas. Therefore, it is of great interest to study the current state of the cultivated soils and the sources and types of contaminants derived from mining activity in order to program its decontamination, where appropriate, according to legislation. In order to know the present and future hazard posed by the soils chemical and mineralogical speciation has been carried out, given that the availability of a metal depends on the phase OPEN ACCESSMinerals 2011, 1 74 in which it is found. The results showed that mining activity has caused high levels of As, Cu, Pb and Zn in several cultivated soils. Moreover, Cu, Pb and Zn showed a high bioavailability. This suggests that at least other studies are necessary to preserve health in the inhabitants of this area. The methodology carried out in this work allowed to select potentially polluted areas where agricultural activities are not recommended.

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Metal sequential extraction procedure optimized for heavily polluted and iron oxide rich sediments

Cited by 85 publications

References 21 publications

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Speciation of heavy metals in marine sediments from the East China Sea by ICP-MS with sequential extraction

Extraction of arsenate and arsenite species from soils and sediments

Assessing Soil Quality in Areas Affected by Sulfide Mining. Application to Soils in the Iberian Pyrite Belt (SW Spain)

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