Characterizing the availability of metals in contaminated soils. I. The solid phase: sequential extraction and isotopic dilution

. The two approaches most commonly applied to characterizing the chemical form and ‘reactivity’ of metals in the soil solid phase are sequential extraction procedures (SEPs) and isotopic dilution (ID). The development and limitations of both approaches are described and their application to contamin...

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Published inSoil use and management Vol. 21; no. s2; pp. 450 - 458
Main Authors Young, S.D., Zhang, H., Tye, A.M., Maxted, A., Thums, C., Thornton, I.
Format Journal Article
LanguageEnglish
Published Oxford, UK Blackwell Publishing Ltd 01.12.2005
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ISSN0266-0032
1475-2743
DOI10.1079/SUM2005348

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Abstract . The two approaches most commonly applied to characterizing the chemical form and ‘reactivity’ of metals in the soil solid phase are sequential extraction procedures (SEPs) and isotopic dilution (ID). The development and limitations of both approaches are described and their application to contaminated soils discussed. It may be argued that ID offers a better means of discriminating between ‘reactive’ and ‘inert’ forms of metal. However, the literature on SEPs is considerably larger, providing greater scope for comparative analysis of new data. Although ID methods are subject to operational constraints, the procedural dependency of SEPs is probably much greater. Thus greater effort has been expended to standardize and verify methodologies for SEPs. However, despite achieving a level of ‘political ratification’ at the procedural level, the use of SEPs within risk assessments for planning or development purposes is currently almost absent. The future for ID methods in this context may lie in site‐specific risk assessments that include improved methods for the prediction of metal solubility and bioavailability.
AbstractList The two approaches most commonly applied to characterizing the chemical form and ‘reactivity’ of metals in the soil solid phase are sequential extraction procedures (SEPs) and isotopic dilution (ID). The development and limitations of both approaches are described and their application to contaminated soils discussed. It may be argued that ID offers a better means of discriminating between ‘reactive’ and ‘inert’ forms of metal. However, the literature on SEPs is considerably larger, providing greater scope for comparative analysis of new data. Although ID methods are subject to operational constraints, the procedural dependency of SEPs is probably much greater. Thus greater effort has been expended to standardize and verify methodologies for SEPs. However, despite achieving a level of ‘political ratification’ at the procedural level, the use of SEPs within risk assessments for planning or development purposes is currently almost absent. The future for ID methods in this context may lie in site‐specific risk assessments that include improved methods for the prediction of metal solubility and bioavailability.
. The two approaches most commonly applied to characterizing the chemical form and ‘reactivity’ of metals in the soil solid phase are sequential extraction procedures (SEPs) and isotopic dilution (ID). The development and limitations of both approaches are described and their application to contaminated soils discussed. It may be argued that ID offers a better means of discriminating between ‘reactive’ and ‘inert’ forms of metal. However, the literature on SEPs is considerably larger, providing greater scope for comparative analysis of new data. Although ID methods are subject to operational constraints, the procedural dependency of SEPs is probably much greater. Thus greater effort has been expended to standardize and verify methodologies for SEPs. However, despite achieving a level of ‘political ratification’ at the procedural level, the use of SEPs within risk assessments for planning or development purposes is currently almost absent. The future for ID methods in this context may lie in site‐specific risk assessments that include improved methods for the prediction of metal solubility and bioavailability.
Author Thornton, I.
Young, S.D.
Maxted, A.
Zhang, H.
Tye, A.M.
Thums, C.
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  organization: British Geological Survey, Kinsley Durham Center, Keyworth, Nottingham NG12 5GG, UK
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  surname: Thornton
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  organization: Environmental Geochemistry Research Group, Department of Environmental Science and Technology, Royal School of Mines, Prince Consort Road, London SW7 2BP, UK
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Tack FM Verloo MG 1996. Impact of single reagent extraction using NH4OAc-EDTA on the solid phase distribution of metals in a contaminated dredged sediment. The Science of the Total Environment 178, 29-36
Ghestem JP Bermond A 1999. Feasibility study of a fractionation of trace elements in soil samples based on kinetics. Environmental Technology 20, 1119-1128
Taylor MP Kesterton RGH 2002. Heavy metal contamination of an arid river environment: Gruben River, Namibia. Geomorphology 42, 311-327
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Ahnstrom ZAS Parker DR 2001. Cadmium reactivity in metal contaminated soils using a coupled stable isotope dilution-sequential extraction procedure. Environmental Science and Technology 35, 121-126
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Chang SC Jackson ML 1957. Fractionation of soil phosphorus. Soil Science 84, 133-144
Li F Shan X Zhang T Zhang S 1998. Evaluation of plant availability of rare earth elements in soils by chemical fractionation and multiple regression analysis. Environmental Pollution 102, 269-277
Graham ER 1973. Selective distribution and labile pools of micronutrient elements as factors affecting plant uptake. Proceedings of the Soil Science Society of America 37, 70-74
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Van Herreweghe S Swennen R Cappuyins V Vandecasteele C 2002. Chemical associations of heavy metals and metalloids in contaminated soils near former ore treatment plants: a differentiated approach with emphasis on pHstat-leaching. Journal of Geochemical Exploration 76, 113-138
Stanhope KG Young SD Hutchinson J Kamath R 2000. Use of isotopic dilution techniques to assess the mobilization of non-labile Cd by chelating agents in phytoremediation. Environmental Science and Technology 34, 4123-4127
Raksasataya M Langdon AG Kim ND 1997. Inhibition of Pb redistribution by two complexing agents (crypt and NTA) during a sequential extraction of soil models. Analytica Chimica Acta 347, 313-323
Hamel SC Ellickson KM Lioy PJ 1999. The estimation of the bioaccessibility of heavy metals in soils using artificial biofluids by two novel methods: mass balance and soil recapture. The Science of the Total Environment 243/244, 273-283
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Onken BM Hossner LR 1996. Determination of arsenic species in soil solution under flooded conditions. Soil Sc
1987; 33
2000; 258
2000; 254
1998; 84
2001; 45
2001; 43
1957; 84
1995; 28
1998b; 17
2000; 96
1967; 18
1996; 60
1998; 209
1995; 124
1998; 203
1995; 120
1991; 105
2001; 442
1973; 37
1999; 243/244
2002; 76
1999; 25
1998
1997
1986; 18
1995
1999; 20
2000; 110
1996; 91
2001; B84
2001; 445
1987; 59
2004; 55
1997; 206
1997; 31
1978; 42
1997; 35
2000; 109
1999; 33
2001; 35
1999; 236
2001; 30
2001; 436
1996; 89
2002; 472
1990; 19
2000; 41
2004; 68
1999; 363
2002; 118
2000; 51
1996; 30
1999; 87
1972a; 10
1998; 40
1999; 401
2004; 76
2002; 49
1997; 347
1998a; 17
2001
2000
2002; 42
2002; 184
1997; 18
2001; 16
1998; 369
1999; 91
1996; 178
1996; 332
1998; 27
2002; 36
2000; 29
1986; 50
1978; 12
1993; 82
2002; 295
2000; 22
2000; 20
1998; 218
2002; 459
1999; 382
2005
1999; 63
2002
1979; 51
1972; 114
2001; 113
1972b; 10
2000; 146
2000; 34
2002; 21
2000; 31
1952; 4
2000; 263
1994b; 20
1998; 32
1998; 102
2001; 76
2003; 67
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Snippet . The two approaches most commonly applied to characterizing the chemical form and ‘reactivity’ of metals in the soil solid phase are sequential extraction...
The two approaches most commonly applied to characterizing the chemical form and ‘reactivity’ of metals in the soil solid phase are sequential extraction...
The two approaches most commonly applied to characterizing the chemical form and `reactivity' of metals in the soil solid phase are sequential extraction...
The two approaches most commonly applied to characterizing the chemical form and 'reactivity' of metals in the soil solid phase are sequential extraction...
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SubjectTerms Contaminated soils
isotopic dilution
metal fractionation
sequential extraction
Title Characterizing the availability of metals in contaminated soils. I. The solid phase: sequential extraction and isotopic dilution
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