Evaluation of a sequential extraction procedure for the speciation of heavy metals in sediments

Davidson, Christine M.; Thomas, R.P.; McVey, Sharon E.; Perala, Reijo; Littlejohn, David; Ure, A.M.

doi:10.1016/0003-2670(94)80023-5

Cited by 279 publications

(137 citation statements)

References 13 publications

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“…Other metals found in this F4 included Cd, Fe, Zn, Mn, Pb and Ni indicating that the metals occurred in the forms of stable organic complexes and metal sulfides. This is supported by previous studies (Davidson, et al, 1994). The high proportion of Fe in F5 in all samples suggests that the source of Fe in all surveyed stations is lithogenic.…”

Section: Discussionsupporting

confidence: 91%

Occurrence of tributyltin compounds and characteristics of heavy metals

Sheikh

Noah

Tsuha

et al. 2007

Int. J. Environ. Sci. Technol.

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Section: Discussionsupporting

confidence: 91%

Occurrence of tributyltin compounds and characteristics of heavy metals

Sheikh

Noah

Tsuha

et al. 2007

Int. J. Environ. Sci. Technol.

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“…From Figure 1 on, we see that there is an increase in the potential mobility as we reach the mouth of the Sinos River, especially at the Luiz Rau stream, where it reaches 60 %. Cu was extracted mainly in the reducible and oxidizable fractions of the sequential extraction procedure, as reported by Davidson et al (1994) and Vymazal et al (2010).…”

Section: Fig 1 Geochemical Distribution Of Cu Zn Ni and Cr In Thementioning

confidence: 84%

“…One technique often used is the sequential extraction procedure proposed by the Community Bureau of Reference (BCR) (now Standards, Measurement and Testing Programme), which involves three stepsexchangeable metals associated with carbonates, reducible metals, and oxidizable metals (Pueyo et al, 2001;Quevauviller et al, 1996;Davidson et al, 1994;Davidson et al, 1999;Teixeira et al, 2003;Rodrigues & Formoso, 2006;Passos et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Assessment of heavy metals in sediments of the Sinos river basin, southern Brazil

Schneider

Teixeira

Rodrigues

et al. 2013

E3S Web of Conferences

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Abstract. The present study aimed to evaluate the content of Cu, Cr, Ni, and Zn and their geochemical partitioning in sediments of the Sinos river basin in southern Brazil. This basin has a high population density and a great number of industries, especially metallurgy, electroplating works, steel mills, petrochemicals, and tanneries. The total metal concentrations were determined by X-ray fluorescence, and the concentrations in the sediment phases were determined by applying the BCR-701 sequential extraction method proposed by the Community Bureau of Reference of the European Community, using ICP/OES. Heavy metal contents were evaluated in the sediment fraction <63 µm. Results in the industrialized and densely populated region showed an increase in the total concentrations for Cu, Cr and Zn, and in the mobile fractions for the sequentially extracted metals Cu, Cr, Zn and Ni. Cr stood out particularly in the Portão stream, showing a total concentration of 1286 mg kg -1 , due to the influence of tanneries in this region.

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“…[37] The dominance of residual or resistant fractions of heavy metals is probably due to the low levels of total metals in sediments. [38] Similarly, Davidson et al [39] mention that sediments are relatively unpolluted. Metals in this form (resistant) are not soluble under experimental conditions and may therefore be considered to be tightly bound.…”

Section: Speciation Of Heavy Metals In Surface Sedimentsmentioning

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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Evaluation of a sequential extraction procedure for the speciation of heavy metals in sediments

Cited by 279 publications

References 13 publications

Occurrence of tributyltin compounds and characteristics of heavy metals

Occurrence of tributyltin compounds and characteristics of heavy metals

Assessment of heavy metals in sediments of the Sinos river basin, southern Brazil

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

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