Comparison of two sequential extraction procedures for metal fractionation in sediment samples

Mester, Zoltán; Cremisini, Carlo; Ghiara, E.; Morabito, Roberto

doi:10.1016/s0003-2670(97)00687-9

Cited by 157 publications

(100 citation statements)

References 16 publications

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“…The dominant proportion of Ni was in the residual fraction, which was in agreement with the literatures (Martin et al, 1998;Mester et al, 1998). High copper content in the residual fraction of river sediments was also found by Budimir and Marko (1995).…”

Section: Cobalt Nickel Copper and Zincsupporting

confidence: 91%

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

428

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: Cobalt Nickel Copper and Zincsupporting

confidence: 91%

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

428

171

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“…4). The reason for this behavior, also reported by other authors, 22 can be related to the mentioned characteristics of lead, which can easily be readsorbed, and to its high tendency to form stable complexes with acetate. In fact, because of the lower concentration of acetate in step 1 and the absence of acetic acid in step 2 of the SM&T procedure, lead complexes with acetate are formed to a lesser extent, or are not formed at all.…”

Section: Comparison Between the Two Extraction Proceduressupporting

confidence: 68%

“…The accuracy is satisfying, considering that Cu was also not certified, but only a range of the values is available from the SM&T report, and that our value is in good accordance with that found in the literature using the SM&T scheme on the CRM 601. 22 As regards step 3, even though our procedure is different from the protocol, a comparison of our results (experiments 2 -4) with the certified and indicative values and ranges shows good accordance. Experiment 1, instead, presents considerably lower values: because step 2 of this experiment is too aggressive, it 1276 ANALYTICAL SCIENCES NOVEMBER 2001, VOL.…”

Section: Modified Smandt Proceduressupporting

confidence: 64%

“…The variability of this element is not surprising: because it is usually strongly bounded with substrates, it easily undergoes redistribution effects. 22 Even the laboratories participating to the certification of CRM 601 observed "high spreads of the results for step 2 and step 3"; 8 therefore, only an indicative value for step 2 is given. The accuracy is satisfying, considering that Cu was also not certified, but only a range of the values is available from the SM&T report, and that our value is in good accordance with that found in the literature using the SM&T scheme on the CRM 601.…”

Section: Modified Smandt Proceduresmentioning

confidence: 99%

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Evaluation and Comparison of Two Selective Extraction Procedures for Heavy Metal Speciation in Sediments

et al. 2001

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“…Transformation and mobility of metals depend on their specific chemical forms or binding formation in sediments. Therefore sequential extraction procedures were used to determine the forms of binding (Tessier et al 1979;Salomons and Forstner 1980;Quevauviller et al 1997) A 3-step sequential extraction proce-dure was applied, using a protocol recommended by the Standard, Measurements and Testing Programme (SM&T), formerly known as the European Communities Bureau of Reference (BCR) (Quevauviller et al 1997;Mester et al 1998;Quevauviller 1998). This protocol uses certified reference material (CRM) 601, which was developed to enable worldwide comparisons of test results from studies of metal-binding forms in sediment columns.…”

Section: Introductionmentioning

confidence: 99%

Factors Regulating the Distribution of Elements in the Sediments of a Seasonally Anoxic Lake in Tropical Taiwan

Chen¹,

Wann²

2004

Terr. Atmos. Ocean. Sci.

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ABSTRACT1 Institute of Marine Geology and Chemistry, National Sun Yat-Sen University, Kaofsiung, Taiwan, ROC 2 General Education Center, Wenzao Ursuline College of Languages, Kaohsiung, Taiwan, ROC * Corresponding author address: Prof. Chen-Tung Arthur Chen, Institute of Marine Geology and Chemistry, National Sun Yat-Sen University, Kaohsiung, Taiwan, ROC; E-mail: ctchen@mail .nsysu.edu.tw Sixteen metals, both total and acid-leached, and their binding formations were quantified for the sediment column of the seasonally anoxic Great Ghost Lake. Since marked variation in the content of organic matter plays a major role in regulating the distribution of metals in sediments, this study provided insight into the relationship between organic matter and metals in a naturally anoxic water environment. Metals, Al, Cs, Mg, Rb and V, had significant negative correlations with total carbon content (TC) and occurred less often in mobile fractions. These findings indicate that these metals came from lithogenic sources and did not change much during early diagenesis. As a result, signals of these elements, whose origins can be traced back to long-range transport dust, were better preserved. Acid-leached contents of Cs, Mg and Rb also had negative correlations with TC, while both total and acid-leached As and Cd had good positive correlations with TC. Large portions of both As and Cd, were observed in mobile fractions (especially As) and came from organic sources and/or were incorporated into organic matter during early diagenesis (especially Cd). Long-term variations in redox conditions of the lake were induced by climate changes and might have influenced distributions of Sr and redox-sensitive Mn and V in mobile fractions. In addition to natural processes, enrichment of Pb and Cd near the core top was from anthropogenic aeolian sources. Finally, recent aeolian fluxes of Al, As, Ba, Br, Ca, Cd, Ce, Cl, Cr, Cs, Cu, Er, Eu, Fe, Ga, Gd, K, La, Lu, Mg, Mn, Na, Nd, Ni, Pb, Rb, Si, Sm, Sr, Ti, Tm, V, Yb, Zn and Zr were estimated and large amounts of micronutrient Fe (~60 µg cm yr 2 1 − − ), of aeolian origin, was also noted. TAO, Vol. 15, No. 5, December 2004 786

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Comparison of two sequential extraction procedures for metal fractionation in sediment samples

Cited by 157 publications

References 16 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

Evaluation and Comparison of Two Selective Extraction Procedures for Heavy Metal Speciation in Sediments

Factors Regulating the Distribution of Elements in the Sediments of a Seasonally Anoxic Lake in Tropical Taiwan

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