Application of a sequential extraction scheme to ten geological certified reference materials for the determination of 20 elements

Hall, G.E.M.; Gauthier, Gilles; Pelchat, Jean-Claude; Pelchat, P; Vaive, Judy E.

doi:10.1039/ja9961100787

Cited by 113 publications

(56 citation statements)

References 11 publications

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“…Amorphous Fe oxyhydroxide phase is well recognized for its scavenging properties of heavy metals in the surface environment (Hall et al, 1996) (Benjamin and Leckie, 1981;Forstner and Wittmann, 1983;Bilinski et al, 1991). Relatively high affinity of Pb (62 % of total), Cu (48 % of total), Cr (45 % of total), Co (31% of total), Zn (30 % of total) and Ni (30 % of total) for amorphous Fe oxyhydroxide minerals was observed in Buriganga river sediments (Table 4).…”

Section: Amorphous Fe Oxyhydroxide Fractionmentioning

confidence: 99%

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Heavy metals contamination in water and sediments of an urban river in a developing country

Mohiuddin

Ogawa

Zakir

et al. 2011

Int. J. Environ. Sci. Technol.

198

100

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Water and sediment samples were collected from 20 location of the Buriganga river of Bangladesh during Summer and Winter 2009 to determine the spatial distribution, seasonal and temporal variation of different heavy metal contents. Sequential extraction procedure was employed in sediment samples for the geochemical partitioning of the metals. Total trace metal content in water and sediment samples were analyzed and compared with different standard and reference values. Concentration of total chromium, lead, cadmium, zinc, copper, nickel, cobalt and arsenic in water samples were greatly exceeded the toxicity reference values in both season. Concentration of chromium, lead, copper and nickel in sediment samples were mostly higher than that of severe effect level values, at which the sediment is considered heavily polluted. On average 72 % chromium, 92 % lead, 88 % zinc, 73 % copper, 63 % nickel and 68 % of total cobalt were associated with the first three labile sequential extraction phases, which portion is readily bioavailable and might be associated with frequent negative biological effects. Enrichment factor values demonstrated that the lead, cadmium, zinc, chromium and copper in most of the sediment samples were enriched sever to very severely. The pollution load index value for the total area was as high as 21.1 in Summer and 24.6 in Winter season; while values above one indicates progressive deterioration of the sites and estuarine quality. The extent of heavy metals pollution in the Buriganga river system implies that the condition is much frightening and may severely affect the aquatic ecology of the river.

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Section: Amorphous Fe Oxyhydroxide Fractionmentioning

confidence: 99%

“…A 5-step sequential extraction procedure described by Hall et al (1996) was employed for the sediment samples collected at Winter season. The five steps are as follows:…”

Section: Sequential Extraction Experimentsmentioning

confidence: 99%

Heavy metals contamination in water and sediments of an urban river in a developing country

Mohiuddin

Ogawa

Zakir

et al. 2011

Int. J. Environ. Sci. Technol.

198

100

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“…There are many analytical procedures consisting of single or sequential extraction for determination of metals in soil. The most comprehensive information about the metal forms in soils and sediments provided by sequential analysis, yet because of the diversity of methods and the modifications introduced by the researchers, their results are difficult to compare [1][2][3][4][5]. One of the most popular methods of sequential analysis to determine trace elements in sediments and soils studies is a three-step extraction developed by the European Community Bureau of Reference -BCR in order to standardize the methodology in this field throughout the European Union.…”

Section: Introductionmentioning

confidence: 99%

Fractionation of Selected Heavy Metals in Agricultural Soils / Frakcjonowanie Wybranych Metali Ciężkich W Glebach Uprawnych

Różański¹

2013

Ecological Chemistry and Engineering S

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Abstract:The content of trace elements in soils varies widely and their mobility and availability depends not only on the total content but also on the form of in which these elements occur. The aim of this study was to determine the total content of nickel, lead, zinc and copper in soils used for agriculture, and assess the mobility and phytoavailability of these metals against a background of physical and chemical properties of these soils. In samples taken from three soil profiles (Phaeozem and 2 Fluvisols) the contents of Ni, Pb, Zn and Cu were determined using atomic absorption spectroscopy in the solutions obtained according to the protocol of modified BCR sequential extraction procedure supplemented with aqua regia digestion. The total content of the analyzed metals in most cases corresponded to the natural values, often not exceeding the geochemical background level. It was only in the one profile of the Fluvisols (Endogleyic Fluvisol) that a higher concentration of zinc and lead was noticed (especially in the surface horizon), slightly exceeding the legal limit. Among the studied metals the lowest phytoavailability was characterized by copper (exchangeable forms on average 4.73% of the total), and the highest by zinc (11.49%). Nickel was the most permanently bound with soil solid phase, and its content in the residual fraction reached 84.46% of the total. Approximately a half of the total lead content was determined as a fraction bound with iron and manganese oxides, while in the case of this metal a significant role in binding of this metal was playing organic matter (fraction bound with organic matter and sulphides -an average of 27.5%). Significant role in the binding of all investigated metals was credited to iron and manganese compounds.

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“…A number of other reference materials, including NIST 2711 (soil certified for total metals and non-certified EPA Method 3050 leachable concentrations), have been used for assessing sequential extraction procedures. NIST 2711 is a moderately contaminated soil intended for quality assurance of analysis of soils and sediments, and although no certified values exist for sequential extractions performed upon NIST 2711, a variety of sequential extraction procedures have been applied to this reference material [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

Comparative study of optimised BCR sequential extraction scheme and acid leaching of elements in the certified reference material NIST 2711

Larner

Seen

Townsend

2006

Analytica Chimica Acta

107

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The optimised BCR sequential extraction procedure and a 4 h 1 mol L −1 HCl partial extraction have been performed on the NIST 2711 reference material for a suite of 12 elements (Cd, Sb, Pb, Al, Cr, Mn, Fe, Co, Ni, Cu, Zn, As) using magnetic sector ICP-MS. A pseudo-total aqua regia digest of NIST 2711 has also been undertaken for quality assurance purposes, and comparison of the sum of the four BCR fractions, which included an aqua regia digest on the residue, with the pseudo-total aqua regia digest has been used to assess the accuracy of the BCR partitioning approach. As a result of this work, discrepancies between previous studies about BCR partitioning of elements in NIST 2711 have been discussed and an increase in confidence about the use of BCR partitioning scheme on seven elements (Cd, Pb, Al, Mn, Fe, Cu, Zn) in this standard material has been obtained. On the other hand, BCR partitioning for Sb, Cr, Co, Ni and As has been provided for the first time. Partial extraction results are also reported for the same 12 elements analysed by the optimised BCR procedure, with the partial extraction results exhibiting a strong correlation with the sum of the three labile steps of the BCR procedure.

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Application of a sequential extraction scheme to ten geological certified reference materials for the determination of 20 elements

Cited by 113 publications

References 11 publications

Heavy metals contamination in water and sediments of an urban river in a developing country

Heavy metals contamination in water and sediments of an urban river in a developing country

Fractionation of Selected Heavy Metals in Agricultural Soils / Frakcjonowanie Wybranych Metali Ciężkich W Glebach Uprawnych

Comparative study of optimised BCR sequential extraction scheme and acid leaching of elements in the certified reference material NIST 2711

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