Studies on redistribution during the analytical fractionation of metals in sediments

Ajayi, S.O.; vanLoon, Gary W.

doi:10.1016/0048-9697(89)90233-7

Cited by 45 publications

(18 citation statements)

References 19 publications

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“…Residues were then washed with 10 ml de-ionized water (Milli-Q), shaken for 15 min, and centrifuged for 20 min at 4000 rpm, the supernatant being discarded. The sequential extraction procedure was carried out with no interruption once started (Ajay and van Loon, 1989). Inductively coupled plasma-mass spectrometry (ICP-MS, Agilent 7500), calibrated with external standard solutions, was applied for the determination of Ba, Cd, Co, Cu, Mn, Mo, Ni, Pb, Sc, Sr, U and Zn.…”

Section: Methodsmentioning

confidence: 99%

Environmental status of Daya Bay surface sediments inferred from a sequential extraction technique

Gao

Chen

Wang

et al. 2010

Estuarine, Coastal and Shelf Science

144

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Section: Methodsmentioning

confidence: 99%

Environmental status of Daya Bay surface sediments inferred from a sequential extraction technique

Gao

Chen

Wang

et al. 2010

Estuarine, Coastal and Shelf Science

144

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“…Kheboian and Bauer [15], using model synthetic phases, observed a significant readsorption of Cu, Pb and Zn when the Tessier scheme was applied. Ajayi and Vanloon [16] employed the natural sediments spiked with model synthetic phases with the aim of supplying fresh unoccupied sites for retention of any metals released during extraction. The main readsorption was attributed to Cr, Pb and Zn over iron and manganese oxides and organic matter.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study of Metal Readsorption in the Application of a Three-Stage Sequential Extraction Scheme and Two Accelerated Versions (Ultrasonic and Single Extractions)

Pérez¹,

Valiente²,

Bendicho³

2008

TOACJ

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Accelerated methods for partitioning of Cd, Cr, Cu, Ni, Pb and Zn, such as the use of single and ultrasonic extractions are assessed in terms of readsorption and compared with the three-stage sequential extraction scheme (SES) of the Standards Measurements and Testing Programme (SM&T). The standard addition approach was employed for characterising the readsorption artefact by applying the above fractionation methods over different certified reference materials (CRMs), BCR 701, BCR 601 (lake sediments), and BCR 141R soil. Ultrasonic extractions provided higher readsorption, mainly for BCR 141R and 601 as compared to conventional SES, the role of ultrasound in the activation of adsorptive sites being significant. The single extraction approach seemed to be inadequate with samples containing large amounts of carbonates such as BCR 141 R but worked well with both lake sediments.The readsorption phenomena are mainly occurring in the most labile fraction (i.e. acid soluble) and has been observed to be matrix dependent. The extent of such phenomenon is also dependent on the extraction methodology, i.e conventional vs accelerated.

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“…1986;Kheboian & Bauer 1987;Tessier & Campbell 1988;Ajayi & Vanloon 1989;Belzile et al 1989). In addition, it is generally recognized that the selectivity of various extractants for metals in specific phases is not absolute (Martin et al 1987).…”

Section: Introdwtionmentioning

confidence: 99%

The selectivity of a sequential extraction procedure for the determination of iron oxyhydroxides andiron sulfides in lake sediments

Shannon

White

1991

Biogeochemistry

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Abstract. A popular sequential extraction procedure (Tessier et al. 1979) designed to extract metals partitioned in various sediment phases, was evaluated for its selectivity. Amorphous FeOOH, FeS, and FeS, were added separately to natural lake sediments and sequentially extracted. The selectivity of the sequential procedure for the added solid phases was evaluated by determining the difference in the mass of Fe extracted from treated and control sediments. In the experiments where sulfide minerals were added, total S was measured in the residual solids in order to confirm selectivity of the method. Concentrations of total carbon remaining in the solid phase after each extraction step were also measured to determine the selectivity of the sequential procedure for carbon.

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Studies on redistribution during the analytical fractionation of metals in sediments

Cited by 45 publications

References 19 publications

Environmental status of Daya Bay surface sediments inferred from a sequential extraction technique

Environmental status of Daya Bay surface sediments inferred from a sequential extraction technique

A Comparative Study of Metal Readsorption in the Application of a Three-Stage Sequential Extraction Scheme and Two Accelerated Versions (Ultrasonic and Single Extractions)

The selectivity of a sequential extraction procedure for the determination of iron oxyhydroxides andiron sulfides in lake sediments

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