Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures
We compared Cr, Cu, Ni and Zn fractionation patterns in four typical soils naturally containing high levels of these elements on the tropical volcanic island of Réunion. Two sequential chemical extraction procedures were used: the modified four-stage BCR procedure (subsequently called mBCR) and the modified six-stage Geological Survey of Canada procedure (subsequently called mGSC). The results obtained by these two procedures highlighted some similarities. With both approaches, exchangeable fractions were the smallest fractions with respect to the four heavy metal (HM) distributions (< 5% of the total HM quantity), and residual fractions had the highest Cr, Cu, Ni and Zn contents (39.1-97.9%) in the four soils. In contrast, we noted differences in HM fractions bound to organic matter. These differences could be explained by the different reagents and extraction sequences implemented in the two procedures. However, the most marked difference in the results obtained by the two procedures concerned the HM fraction bound to oxyhydroxides, despite the fact that the same reagent was used (hydroxylammonium chloride). Our results revealed that the mBCR procedure underestimated the proportion of HM bound to this fraction. The mGSC procedure therefore seems more suitable for analysing tropical soils which typically contain high levels of Fe and Mn oxyhydroxides.
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Subjects: | P33 - Chimie et physique du sol, analyse de sol, sol tropical, sol volcanique, fractionnement, métal lourd, extraction, élément métallique, cuivre, chrome, nickel, zinc, http://aims.fao.org/aos/agrovoc/c_7198, http://aims.fao.org/aos/agrovoc/c_7978, http://aims.fao.org/aos/agrovoc/c_8287, http://aims.fao.org/aos/agrovoc/c_3074, http://aims.fao.org/aos/agrovoc/c_2223, http://aims.fao.org/aos/agrovoc/c_36910, http://aims.fao.org/aos/agrovoc/c_4774, http://aims.fao.org/aos/agrovoc/c_1868, http://aims.fao.org/aos/agrovoc/c_1595, http://aims.fao.org/aos/agrovoc/c_5172, http://aims.fao.org/aos/agrovoc/c_8517, http://aims.fao.org/aos/agrovoc/c_6543, http://aims.fao.org/aos/agrovoc/c_3081, |
Online Access: | http://agritrop.cirad.fr/543223/ http://agritrop.cirad.fr/543223/1/document_543223.pdf |
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dig-cirad-fr-5432232024-01-28T15:38:12Z http://agritrop.cirad.fr/543223/ http://agritrop.cirad.fr/543223/ Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures. Doelsch Emmanuel, Moussard Géraud Daniel, Saint Macary Hervé. 2008. Geoderma, 143 (1-2) : 168-179.https://doi.org/10.1016/j.geoderma.2007.10.027 <https://doi.org/10.1016/j.geoderma.2007.10.027> Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures Doelsch, Emmanuel Moussard, Géraud Daniel Saint Macary, Hervé eng 2008 Geoderma P33 - Chimie et physique du sol analyse de sol sol tropical sol volcanique fractionnement métal lourd extraction élément métallique cuivre chrome nickel zinc http://aims.fao.org/aos/agrovoc/c_7198 http://aims.fao.org/aos/agrovoc/c_7978 http://aims.fao.org/aos/agrovoc/c_8287 http://aims.fao.org/aos/agrovoc/c_3074 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36910 http://aims.fao.org/aos/agrovoc/c_4774 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1595 http://aims.fao.org/aos/agrovoc/c_5172 http://aims.fao.org/aos/agrovoc/c_8517 La Réunion France http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 We compared Cr, Cu, Ni and Zn fractionation patterns in four typical soils naturally containing high levels of these elements on the tropical volcanic island of Réunion. Two sequential chemical extraction procedures were used: the modified four-stage BCR procedure (subsequently called mBCR) and the modified six-stage Geological Survey of Canada procedure (subsequently called mGSC). The results obtained by these two procedures highlighted some similarities. With both approaches, exchangeable fractions were the smallest fractions with respect to the four heavy metal (HM) distributions (< 5% of the total HM quantity), and residual fractions had the highest Cr, Cu, Ni and Zn contents (39.1-97.9%) in the four soils. In contrast, we noted differences in HM fractions bound to organic matter. These differences could be explained by the different reagents and extraction sequences implemented in the two procedures. However, the most marked difference in the results obtained by the two procedures concerned the HM fraction bound to oxyhydroxides, despite the fact that the same reagent was used (hydroxylammonium chloride). Our results revealed that the mBCR procedure underestimated the proportion of HM bound to this fraction. The mGSC procedure therefore seems more suitable for analysing tropical soils which typically contain high levels of Fe and Mn oxyhydroxides. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/543223/1/document_543223.pdf application/pdf Cirad license info:eu-repo/semantics/restrictedAccess https://agritrop.cirad.fr/mention_legale.html https://doi.org/10.1016/j.geoderma.2007.10.027 10.1016/j.geoderma.2007.10.027 info:eu-repo/semantics/altIdentifier/doi/10.1016/j.geoderma.2007.10.027 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1016/j.geoderma.2007.10.027 |
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P33 - Chimie et physique du sol analyse de sol sol tropical sol volcanique fractionnement métal lourd extraction élément métallique cuivre chrome nickel zinc http://aims.fao.org/aos/agrovoc/c_7198 http://aims.fao.org/aos/agrovoc/c_7978 http://aims.fao.org/aos/agrovoc/c_8287 http://aims.fao.org/aos/agrovoc/c_3074 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36910 http://aims.fao.org/aos/agrovoc/c_4774 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1595 http://aims.fao.org/aos/agrovoc/c_5172 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 P33 - Chimie et physique du sol analyse de sol sol tropical sol volcanique fractionnement métal lourd extraction élément métallique cuivre chrome nickel zinc http://aims.fao.org/aos/agrovoc/c_7198 http://aims.fao.org/aos/agrovoc/c_7978 http://aims.fao.org/aos/agrovoc/c_8287 http://aims.fao.org/aos/agrovoc/c_3074 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36910 http://aims.fao.org/aos/agrovoc/c_4774 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1595 http://aims.fao.org/aos/agrovoc/c_5172 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 |
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P33 - Chimie et physique du sol analyse de sol sol tropical sol volcanique fractionnement métal lourd extraction élément métallique cuivre chrome nickel zinc http://aims.fao.org/aos/agrovoc/c_7198 http://aims.fao.org/aos/agrovoc/c_7978 http://aims.fao.org/aos/agrovoc/c_8287 http://aims.fao.org/aos/agrovoc/c_3074 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36910 http://aims.fao.org/aos/agrovoc/c_4774 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1595 http://aims.fao.org/aos/agrovoc/c_5172 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 P33 - Chimie et physique du sol analyse de sol sol tropical sol volcanique fractionnement métal lourd extraction élément métallique cuivre chrome nickel zinc http://aims.fao.org/aos/agrovoc/c_7198 http://aims.fao.org/aos/agrovoc/c_7978 http://aims.fao.org/aos/agrovoc/c_8287 http://aims.fao.org/aos/agrovoc/c_3074 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36910 http://aims.fao.org/aos/agrovoc/c_4774 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1595 http://aims.fao.org/aos/agrovoc/c_5172 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 Doelsch, Emmanuel Moussard, Géraud Daniel Saint Macary, Hervé Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures |
description |
We compared Cr, Cu, Ni and Zn fractionation patterns in four typical soils naturally containing high levels of these elements on the tropical volcanic island of Réunion. Two sequential chemical extraction procedures were used: the modified four-stage BCR procedure (subsequently called mBCR) and the modified six-stage Geological Survey of Canada procedure (subsequently called mGSC). The results obtained by these two procedures highlighted some similarities. With both approaches, exchangeable fractions were the smallest fractions with respect to the four heavy metal (HM) distributions (< 5% of the total HM quantity), and residual fractions had the highest Cr, Cu, Ni and Zn contents (39.1-97.9%) in the four soils. In contrast, we noted differences in HM fractions bound to organic matter. These differences could be explained by the different reagents and extraction sequences implemented in the two procedures. However, the most marked difference in the results obtained by the two procedures concerned the HM fraction bound to oxyhydroxides, despite the fact that the same reagent was used (hydroxylammonium chloride). Our results revealed that the mBCR procedure underestimated the proportion of HM bound to this fraction. The mGSC procedure therefore seems more suitable for analysing tropical soils which typically contain high levels of Fe and Mn oxyhydroxides. |
format |
article |
topic_facet |
P33 - Chimie et physique du sol analyse de sol sol tropical sol volcanique fractionnement métal lourd extraction élément métallique cuivre chrome nickel zinc http://aims.fao.org/aos/agrovoc/c_7198 http://aims.fao.org/aos/agrovoc/c_7978 http://aims.fao.org/aos/agrovoc/c_8287 http://aims.fao.org/aos/agrovoc/c_3074 http://aims.fao.org/aos/agrovoc/c_2223 http://aims.fao.org/aos/agrovoc/c_36910 http://aims.fao.org/aos/agrovoc/c_4774 http://aims.fao.org/aos/agrovoc/c_1868 http://aims.fao.org/aos/agrovoc/c_1595 http://aims.fao.org/aos/agrovoc/c_5172 http://aims.fao.org/aos/agrovoc/c_8517 http://aims.fao.org/aos/agrovoc/c_6543 http://aims.fao.org/aos/agrovoc/c_3081 |
author |
Doelsch, Emmanuel Moussard, Géraud Daniel Saint Macary, Hervé |
author_facet |
Doelsch, Emmanuel Moussard, Géraud Daniel Saint Macary, Hervé |
author_sort |
Doelsch, Emmanuel |
title |
Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures |
title_short |
Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures |
title_full |
Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures |
title_fullStr |
Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures |
title_full_unstemmed |
Fractionation of tropical soilborne heavy metals-Comparison of two sequential extraction procedures |
title_sort |
fractionation of tropical soilborne heavy metals-comparison of two sequential extraction procedures |
url |
http://agritrop.cirad.fr/543223/ http://agritrop.cirad.fr/543223/1/document_543223.pdf |
work_keys_str_mv |
AT doelschemmanuel fractionationoftropicalsoilborneheavymetalscomparisonoftwosequentialextractionprocedures AT moussardgerauddaniel fractionationoftropicalsoilborneheavymetalscomparisonoftwosequentialextractionprocedures AT saintmacaryherve fractionationoftropicalsoilborneheavymetalscomparisonoftwosequentialextractionprocedures |
_version_ |
1792496797122297856 |