HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Distributed under a Creative Commons Attribution-ShareAlike| 4.0 International License Mise au point de modèles chimiométriques pour la caractérisation de sols à partir de mesures spectrales PIR effectuées au laboratoire et au champ
International Journal of Environmental Analytical Chemistry, 2021
A new method for the analysis of pesticides in agricultural soils by using liquid chromatography ... more A new method for the analysis of pesticides in agricultural soils by using liquid chromatography coupled with a high-resolution quadrupole time-of-flight mass spectrometer (LC-QTOF-MS) has been dev...
International audienceFollowing three previous papers (van Oort et al., 2016, 2017, 2020) dealing... more International audienceFollowing three previous papers (van Oort et al., 2016, 2017, 2020) dealing with current soil characteristics and geochemical budgets in surface horizons, as well as the impacts of fertilization in subsurface horizons in soils of INRAE’s long term bare fallow experiment (the 42-plots trial), we now present some chronological aspects of soil evolution at the soil’s surface since 1928. For that, we analyzed several series of about 15 samples from the historical sample archive for 10 representative treatments: fertilizers with acidifying effects (ammonium sulphate, ammonium phosphate), fertilizers with dispersive effects (sodium nitrate, sylvinite, and potassium chloride), superphosphate, amendments with alkaline effects (basic slag, calcium carbonate), horse manure, as well as two reference plots, without inputs. We examined temporal evolutions of: i) edaphic parameters such as organic carbon and clay contents, pH, CEC and exchangeable cations; ii) total concentrations of major and trace elements; iii) the mineralogical composition of clay and fine silt fractions with a focus on the acidifying ammonium treatments. This work produced original findings on the magnitudes of pedogeochemical changes that occurred during the 90 years of the experiment. Regarding previous results on soil-depth impacts, our findings contribute at recounting complementary parts of a same history of soil development. constraint by different fertilization practices. From a pedological point of view, the 42-plots experiment acts as a “pedotron” under real climatic conditions, showing an acceleration of soil processes of the silt Luvisol following different pedological pathways as a function of the applied fertilizer or amendment.A la suite de travaux précédents sur les états pédogéochimiques, les bilans géochimiques et les impacts de la fertilisation dans les horizons profonds du NEOLUVISOL de lœss du dispositif des 42 parcelles d’INRAE (van Oort et al., 2016, 2017, 2020), nous examinons ici des aspects chronologiques d’évolutions intervenues en surface des sols depuis 1928. Pour cela, des séries d’une quinzaine d’échantillons de la collection historique ont été analysées pour une dizaine de traitements représentatifs : engrais à effet acidifiant (sulfate et phosphate d’ammonium), engrais à effet dispersant (nitrate de sodium, sylvinite, chlorure de potassium), superphosphate, amendements à effet alcalinisant (scories de déphosphoration, carbonate de calcium), fumier de cheval, ainsi que deux parcelles témoins’, sans apport. Nous abordons l’évolution temporelle i) des paramètres édaphiques : teneur en carbone organique et en argile, pH, CEC et garniture cationique ; ii) des teneurs totales en éléments majeurs et en trace ; iii), de la composition minéralogique de fractions argileuses et limoneuses, notamment dans le cas des traitements acidifiants. Les résultats, nombreux et souvent originaux, permettent d’apprécier l’ampleur des évolutions durant les 9 décennies d’expérimentation. Par rapport aux résultats antérieurs sur les impacts en profondeur, ces données contribuent à retracer des parties complémentaires d’une même histoire d’évolution, contrainte par les différents traitements de fertilisation. Vu sous un angle pédologique, le dispositif des 42 parcelles œuvre comme un « pédotron » en conditions réelles, mettant en évidence une accélération des processus d’évolution du sol limoneux selon différentes voies de la pédogenèse, en fonction de la nature des matières fertilisantes apportées
Ce travail presente un bilan des impacts de 85 ans d’apports d’engrais chimiques N, P, K, d’amend... more Ce travail presente un bilan des impacts de 85 ans d’apports d’engrais chimiques N, P, K, d’amendements basiques et organiques sur la composition et les proprietes d’un Neoluvisol de loess, en comparaison a des situations temoins sans apport. Cette experimentation de longue duree est menee depuis 1928 en sol nu dans le dispositif des 42 parcelles a l’Inra de Versailles. Le bilan repose sur les resultats analytiques d’echantillons collectes en 2014 dans l’ensemble des horizons de surface. Les resultats sont confrontes a des donnees disponibles du sol initial de 1928. L’objectif est de preciser la nature et l’ampleur des evolutions physicochimiques, induites en moins d’un siecle, et d’identifier les processus pedologiques qui en sont a l’origine. En absence d’entree de matieres organiques (MO), de forts contrastes s’observent en fonction de la nature des apports mineraux, mais aussi dans les parcelles temoins : en 2014, d’une parcelle a une autre, l’ecart maximal de pH est de 5,3 unit...
Ce travail porte essentiellement sur le comportement des metaux traces dans les divers compartime... more Ce travail porte essentiellement sur le comportement des metaux traces dans les divers compartiments du site portuaire de Boulogne sur mer (colonne d'eau, sediments. . . ), compartiments consideres comme lieux de transit des contaminants metalliques
1) INRA-AgroParisTech, UMR 1402 ECOSYS, pôle Ecotoxicologie, RD-10, F-78026 Versailles Cedex, Fra... more 1) INRA-AgroParisTech, UMR 1402 ECOSYS, pôle Ecotoxicologie, RD-10, F-78026 Versailles Cedex, France 2) Universidade de Santiago de Compostela. Departamento de Edafoloxía e Química Agrícola, Facultade de Farmacia, E-15782 Santiago de Compostela, Espagne 3) INRA, US 0010 Laboratoire d’Analyse des Sols, 273 Route de Cambrai, F-62000 Arras, France 4) INRA, UR 0272 Science du Sol, F-45075 Orléans Cedex 2, France 5) Université de Bourgogne Franche Comté, UMR 6298, ArTéHis, CNRS-Culture, 6 bd Gabriel, Bat. Gabriel, F-21000 Dijon, France
Des etudes precedentes, realisees avec le concours financier de l'Etablissement Public Region... more Des etudes precedentes, realisees avec le concours financier de l'Etablissement Public Regional du regional du Nord Pas de Calais et l'IFREMER, ont permis de montrer l'importance des zones portuaires comme sources de polluants (metaux , toxiques organiques, bacteries fecales) pour le milieu littoral. Le but de cette etude, realisee en collaboration entre le Service des Eaux de l'Institut Pasteur de Lille (IPL) et le Laboratoire de Chimie Analytique et Marine (LCAM) de l'Universite des Sciences et Techniques de Lille, etait de preciser pour Boulogne et Calais : - La repartition des polluants dans les sediments portuaires susceptibles d'etre dragues; - La qualite des eaux portuaires; - L'importance respective de diverses sources de pollution d'origine terrestre (rejets industriels, rejets urbains, apports fluviaux ... ).
Long-term bare fallow (LTBF) experiments with historical sample archives offer unique opportuniti... more Long-term bare fallow (LTBF) experiments with historical sample archives offer unique opportunities to study long-term impacts of anthropogenic activities on mineral soil fractions. In natural agro-and ecosystems, such impacts are often masked by organic matter due to its buffering action and rapid turnover. The 42-plot LTBF trial of INRA (Institut National de la Recherche Agronomique) started in Versailles (France) in 1928 to assess the impacts of prolonged application of fertilizers and amendments on the composition and properties of loamy soils. Here, we established geochemical budgets of major and trace elements on surface samples from 1929 and 2014 for four groups of treatments relevant for developed soil processes. We considered accompanying effects of soil compaction or decompaction due to changing physicochemical conditions over 85 years. Element losses from the surface horizon were quantified via fertilization-induced or-amplified soil processes: clay leaching favored by Na-or K-based fertilization, and lixiviation of major and trace elements in acidic or alkaline soil conditions. Enhanced mineral weathering was shown for acidified and nonamended plots. Conclusions on trace metal migration were confirmed by selected analyses on subsurface horizons. Additional information was provided on specific element inputs via fertilizers and/or diffuse inputs via atmospheric deposition.
The soil around Metaleurop, a big smelter, is heavily contaminated by Zn, Pb, Cd and Cu. In order... more The soil around Metaleurop, a big smelter, is heavily contaminated by Zn, Pb, Cd and Cu. In order to compare the impact of different soil amendments on the metal availability to trees, the polluted soil section was divided in a reference parcel and two others with either sulfocalcic or silico-aluminous ash amendments. Five different tree species were planted on the parcels and the uptake of heavy metals in these trees was studied. Total and labile metal fractions were assessed in each of the 3 parcels. The mobility and assimilation of the metals was highest in the non-amended, reference soil parcel which had the lowest pH, organic matter and carbonate content. In all soils, pH decreased while organic matter content and mobility of the metals increased over time. Highest bulk concentrations of trace metals were found in white willow trees (Salix alba L.). Laser ablation-ICPMS was used to study changes in metal accumulation over a period of 10 years after planting the trees. The radial metal profiles in the trunk core samples varied between elements and tree species, however, in all willow trees the radial Cd and Zn profiles were significantly correlated. Radial pollutant concentration patterns are discussed in terms of seasonal effects, health status, tree species and metal mobility in the soil. For Cd and Zn, the profiles were influenced by their mobility in the soils. In general, periodical patterns were observed for Pb. Cu concentration profiles were decreasing over time, with the strongest decrease in the initial growth period.
Le Référentiel Pédo-Géochimique (RPG) est le résultat d`un inventaire géochimique des sols du Nor... more Le Référentiel Pédo-Géochimique (RPG) est le résultat d`un inventaire géochimique des sols du Nord-Pas de Calais, réalisé selon une approche typologique. Ces sols sont issus uniquement de matériaux sédimentaires. Les concentrations totales en Al, Fe et en 18 éléments en traces, ainsi que les paramètres pédologiques habituels, ont été mesurés dans les échantillons de 271 horizons de surface et 487 de profondeur issus de 22 types de roches et de formations superficielles. Les facteurs d`enrichissement calculés par rapport à Al ou Fe montrent que les matériaux parentaux sont enrichis en presque tous les éléments en traces au regard de la croûte continentale supérieure. Les roches calcaires du Carbonifère, du Crétacé et du Jurassique sont particulièrement enrichies en Cd, probablement par substitution du métal au Ca de la calcite. Dans les horizons profonds, les éléments les moins mobiles géochimiquement (Bi, Co, Cr, Cu, In, Ni, Pb, Sn, Tl, V, Zn, dont le potentiel ionique, Z/r, se situ...
Ag, As, Bi, Cd, Co, Cr, Cu, Hg, In, Ni, Pb, Sb, Se, Sn,Tl, Th, U and Zn contamination of cultivat... more Ag, As, Bi, Cd, Co, Cr, Cu, Hg, In, Ni, Pb, Sb, Se, Sn,Tl, Th, U and Zn contamination of cultivated surfacehorizons has been assessed around two lead and zincsmelters in the North of France. The verticaldistribution of Ag, As, Bi, Cu, Hg, Se, Sb and Tl inthe soils has also been examined. The soils around thelead and zinc smelter
Heavy metal pollution in sediments derived from the Deûle canal and sampled at different sites no... more Heavy metal pollution in sediments derived from the Deûle canal and sampled at different sites not far from a smelting plant has been examined in the present work in order to identify the sources of these metals and to assess the sediment environmental quality. The total concentrations of lead, zinc, cadmium, thallium, indium and tin in the samples were determined using inductively coupled plasmaatomic emission spectroscopy (ICP-AES). Our investigations have revealed that metal pollution is readily apparent in the studied sediments, with metals contents largely exceeding those measured in the background soils: maximum values are obtained for sediments collected near the industrial zone. The chemical forms of Pb, Zn, Cd, Tl, In and Sn in these sediments have also been studied using a sequential Keywords sediments. heavy metals. ores. smelter. pollution. sequential extraction 1 Introduction Ores treated and dusts and slags produced by smelting factories contain high amounts of heavy metals that
The contamination of 27 urban topsoils has been assessed around two lead and zinc smelters (Metal... more The contamination of 27 urban topsoils has been assessed around two lead and zinc smelters (Metaleurop Nord and Umicore) in the North of France. Eighteen trace elements have been analysed
Three unbuffered salt solutions used to estimate soil trace metal bioavailability were compared. ... more Three unbuffered salt solutions used to estimate soil trace metal bioavailability were compared. The objective was to evaluate chemical speciation of Cd, Cu, Pb, and Zn in 0.01 M CaCl2, 0.1 M NaNO3, and 1 M NH4NO3 extracts. The metal in each extract were speciated with a model that was optimized experimentally using an exchange resin. In NH4NO3, Cd, Cu, and Zn were completely complexed by NH3. In extracts of pH lower than 6.5, Pb was essentially present as free Pb2+ and metal‐organic complexes. In extracts of higher pH, PbCO3 and free Pb2+ were dominant. In CaCl2, Cu and Zn were mainly present as organic complexes and free Zn2+, respectively. In all extracts, 50% of Cd was free Cd2+ and 50% CdCl+. As pH increased, the proportions of free Pb2+ and organic complexes decreased while those of inorganic complexes increased. In NaNO3, Cd, Cu, and Zn were, respectively, mainly present as free Cd2+, organic complexes and free Zn2+. Speciation of Pb changed with pH as in NH4NO3. Similarities...
International Journal of Environmental Analytical Chemistry, 2004
A general study on uranium present at trace levels in anoxic sediments derived from Authie Bay (i... more A general study on uranium present at trace levels in anoxic sediments derived from Authie Bay (in northern France) has been undertaken. For that purpose, concentrations of various uranium species in pore waters and recovered solutions (after mineralization of sediments) were ...
HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific re... more HAL is a multidisciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés. Distributed under a Creative Commons Attribution-ShareAlike| 4.0 International License Mise au point de modèles chimiométriques pour la caractérisation de sols à partir de mesures spectrales PIR effectuées au laboratoire et au champ
International Journal of Environmental Analytical Chemistry, 2021
A new method for the analysis of pesticides in agricultural soils by using liquid chromatography ... more A new method for the analysis of pesticides in agricultural soils by using liquid chromatography coupled with a high-resolution quadrupole time-of-flight mass spectrometer (LC-QTOF-MS) has been dev...
International audienceFollowing three previous papers (van Oort et al., 2016, 2017, 2020) dealing... more International audienceFollowing three previous papers (van Oort et al., 2016, 2017, 2020) dealing with current soil characteristics and geochemical budgets in surface horizons, as well as the impacts of fertilization in subsurface horizons in soils of INRAE’s long term bare fallow experiment (the 42-plots trial), we now present some chronological aspects of soil evolution at the soil’s surface since 1928. For that, we analyzed several series of about 15 samples from the historical sample archive for 10 representative treatments: fertilizers with acidifying effects (ammonium sulphate, ammonium phosphate), fertilizers with dispersive effects (sodium nitrate, sylvinite, and potassium chloride), superphosphate, amendments with alkaline effects (basic slag, calcium carbonate), horse manure, as well as two reference plots, without inputs. We examined temporal evolutions of: i) edaphic parameters such as organic carbon and clay contents, pH, CEC and exchangeable cations; ii) total concentrations of major and trace elements; iii) the mineralogical composition of clay and fine silt fractions with a focus on the acidifying ammonium treatments. This work produced original findings on the magnitudes of pedogeochemical changes that occurred during the 90 years of the experiment. Regarding previous results on soil-depth impacts, our findings contribute at recounting complementary parts of a same history of soil development. constraint by different fertilization practices. From a pedological point of view, the 42-plots experiment acts as a “pedotron” under real climatic conditions, showing an acceleration of soil processes of the silt Luvisol following different pedological pathways as a function of the applied fertilizer or amendment.A la suite de travaux précédents sur les états pédogéochimiques, les bilans géochimiques et les impacts de la fertilisation dans les horizons profonds du NEOLUVISOL de lœss du dispositif des 42 parcelles d’INRAE (van Oort et al., 2016, 2017, 2020), nous examinons ici des aspects chronologiques d’évolutions intervenues en surface des sols depuis 1928. Pour cela, des séries d’une quinzaine d’échantillons de la collection historique ont été analysées pour une dizaine de traitements représentatifs : engrais à effet acidifiant (sulfate et phosphate d’ammonium), engrais à effet dispersant (nitrate de sodium, sylvinite, chlorure de potassium), superphosphate, amendements à effet alcalinisant (scories de déphosphoration, carbonate de calcium), fumier de cheval, ainsi que deux parcelles témoins’, sans apport. Nous abordons l’évolution temporelle i) des paramètres édaphiques : teneur en carbone organique et en argile, pH, CEC et garniture cationique ; ii) des teneurs totales en éléments majeurs et en trace ; iii), de la composition minéralogique de fractions argileuses et limoneuses, notamment dans le cas des traitements acidifiants. Les résultats, nombreux et souvent originaux, permettent d’apprécier l’ampleur des évolutions durant les 9 décennies d’expérimentation. Par rapport aux résultats antérieurs sur les impacts en profondeur, ces données contribuent à retracer des parties complémentaires d’une même histoire d’évolution, contrainte par les différents traitements de fertilisation. Vu sous un angle pédologique, le dispositif des 42 parcelles œuvre comme un « pédotron » en conditions réelles, mettant en évidence une accélération des processus d’évolution du sol limoneux selon différentes voies de la pédogenèse, en fonction de la nature des matières fertilisantes apportées
Ce travail presente un bilan des impacts de 85 ans d’apports d’engrais chimiques N, P, K, d’amend... more Ce travail presente un bilan des impacts de 85 ans d’apports d’engrais chimiques N, P, K, d’amendements basiques et organiques sur la composition et les proprietes d’un Neoluvisol de loess, en comparaison a des situations temoins sans apport. Cette experimentation de longue duree est menee depuis 1928 en sol nu dans le dispositif des 42 parcelles a l’Inra de Versailles. Le bilan repose sur les resultats analytiques d’echantillons collectes en 2014 dans l’ensemble des horizons de surface. Les resultats sont confrontes a des donnees disponibles du sol initial de 1928. L’objectif est de preciser la nature et l’ampleur des evolutions physicochimiques, induites en moins d’un siecle, et d’identifier les processus pedologiques qui en sont a l’origine. En absence d’entree de matieres organiques (MO), de forts contrastes s’observent en fonction de la nature des apports mineraux, mais aussi dans les parcelles temoins : en 2014, d’une parcelle a une autre, l’ecart maximal de pH est de 5,3 unit...
Ce travail porte essentiellement sur le comportement des metaux traces dans les divers compartime... more Ce travail porte essentiellement sur le comportement des metaux traces dans les divers compartiments du site portuaire de Boulogne sur mer (colonne d'eau, sediments. . . ), compartiments consideres comme lieux de transit des contaminants metalliques
1) INRA-AgroParisTech, UMR 1402 ECOSYS, pôle Ecotoxicologie, RD-10, F-78026 Versailles Cedex, Fra... more 1) INRA-AgroParisTech, UMR 1402 ECOSYS, pôle Ecotoxicologie, RD-10, F-78026 Versailles Cedex, France 2) Universidade de Santiago de Compostela. Departamento de Edafoloxía e Química Agrícola, Facultade de Farmacia, E-15782 Santiago de Compostela, Espagne 3) INRA, US 0010 Laboratoire d’Analyse des Sols, 273 Route de Cambrai, F-62000 Arras, France 4) INRA, UR 0272 Science du Sol, F-45075 Orléans Cedex 2, France 5) Université de Bourgogne Franche Comté, UMR 6298, ArTéHis, CNRS-Culture, 6 bd Gabriel, Bat. Gabriel, F-21000 Dijon, France
Des etudes precedentes, realisees avec le concours financier de l'Etablissement Public Region... more Des etudes precedentes, realisees avec le concours financier de l'Etablissement Public Regional du regional du Nord Pas de Calais et l'IFREMER, ont permis de montrer l'importance des zones portuaires comme sources de polluants (metaux , toxiques organiques, bacteries fecales) pour le milieu littoral. Le but de cette etude, realisee en collaboration entre le Service des Eaux de l'Institut Pasteur de Lille (IPL) et le Laboratoire de Chimie Analytique et Marine (LCAM) de l'Universite des Sciences et Techniques de Lille, etait de preciser pour Boulogne et Calais : - La repartition des polluants dans les sediments portuaires susceptibles d'etre dragues; - La qualite des eaux portuaires; - L'importance respective de diverses sources de pollution d'origine terrestre (rejets industriels, rejets urbains, apports fluviaux ... ).
Long-term bare fallow (LTBF) experiments with historical sample archives offer unique opportuniti... more Long-term bare fallow (LTBF) experiments with historical sample archives offer unique opportunities to study long-term impacts of anthropogenic activities on mineral soil fractions. In natural agro-and ecosystems, such impacts are often masked by organic matter due to its buffering action and rapid turnover. The 42-plot LTBF trial of INRA (Institut National de la Recherche Agronomique) started in Versailles (France) in 1928 to assess the impacts of prolonged application of fertilizers and amendments on the composition and properties of loamy soils. Here, we established geochemical budgets of major and trace elements on surface samples from 1929 and 2014 for four groups of treatments relevant for developed soil processes. We considered accompanying effects of soil compaction or decompaction due to changing physicochemical conditions over 85 years. Element losses from the surface horizon were quantified via fertilization-induced or-amplified soil processes: clay leaching favored by Na-or K-based fertilization, and lixiviation of major and trace elements in acidic or alkaline soil conditions. Enhanced mineral weathering was shown for acidified and nonamended plots. Conclusions on trace metal migration were confirmed by selected analyses on subsurface horizons. Additional information was provided on specific element inputs via fertilizers and/or diffuse inputs via atmospheric deposition.
The soil around Metaleurop, a big smelter, is heavily contaminated by Zn, Pb, Cd and Cu. In order... more The soil around Metaleurop, a big smelter, is heavily contaminated by Zn, Pb, Cd and Cu. In order to compare the impact of different soil amendments on the metal availability to trees, the polluted soil section was divided in a reference parcel and two others with either sulfocalcic or silico-aluminous ash amendments. Five different tree species were planted on the parcels and the uptake of heavy metals in these trees was studied. Total and labile metal fractions were assessed in each of the 3 parcels. The mobility and assimilation of the metals was highest in the non-amended, reference soil parcel which had the lowest pH, organic matter and carbonate content. In all soils, pH decreased while organic matter content and mobility of the metals increased over time. Highest bulk concentrations of trace metals were found in white willow trees (Salix alba L.). Laser ablation-ICPMS was used to study changes in metal accumulation over a period of 10 years after planting the trees. The radial metal profiles in the trunk core samples varied between elements and tree species, however, in all willow trees the radial Cd and Zn profiles were significantly correlated. Radial pollutant concentration patterns are discussed in terms of seasonal effects, health status, tree species and metal mobility in the soil. For Cd and Zn, the profiles were influenced by their mobility in the soils. In general, periodical patterns were observed for Pb. Cu concentration profiles were decreasing over time, with the strongest decrease in the initial growth period.
Le Référentiel Pédo-Géochimique (RPG) est le résultat d`un inventaire géochimique des sols du Nor... more Le Référentiel Pédo-Géochimique (RPG) est le résultat d`un inventaire géochimique des sols du Nord-Pas de Calais, réalisé selon une approche typologique. Ces sols sont issus uniquement de matériaux sédimentaires. Les concentrations totales en Al, Fe et en 18 éléments en traces, ainsi que les paramètres pédologiques habituels, ont été mesurés dans les échantillons de 271 horizons de surface et 487 de profondeur issus de 22 types de roches et de formations superficielles. Les facteurs d`enrichissement calculés par rapport à Al ou Fe montrent que les matériaux parentaux sont enrichis en presque tous les éléments en traces au regard de la croûte continentale supérieure. Les roches calcaires du Carbonifère, du Crétacé et du Jurassique sont particulièrement enrichies en Cd, probablement par substitution du métal au Ca de la calcite. Dans les horizons profonds, les éléments les moins mobiles géochimiquement (Bi, Co, Cr, Cu, In, Ni, Pb, Sn, Tl, V, Zn, dont le potentiel ionique, Z/r, se situ...
Ag, As, Bi, Cd, Co, Cr, Cu, Hg, In, Ni, Pb, Sb, Se, Sn,Tl, Th, U and Zn contamination of cultivat... more Ag, As, Bi, Cd, Co, Cr, Cu, Hg, In, Ni, Pb, Sb, Se, Sn,Tl, Th, U and Zn contamination of cultivated surfacehorizons has been assessed around two lead and zincsmelters in the North of France. The verticaldistribution of Ag, As, Bi, Cu, Hg, Se, Sb and Tl inthe soils has also been examined. The soils around thelead and zinc smelter
Heavy metal pollution in sediments derived from the Deûle canal and sampled at different sites no... more Heavy metal pollution in sediments derived from the Deûle canal and sampled at different sites not far from a smelting plant has been examined in the present work in order to identify the sources of these metals and to assess the sediment environmental quality. The total concentrations of lead, zinc, cadmium, thallium, indium and tin in the samples were determined using inductively coupled plasmaatomic emission spectroscopy (ICP-AES). Our investigations have revealed that metal pollution is readily apparent in the studied sediments, with metals contents largely exceeding those measured in the background soils: maximum values are obtained for sediments collected near the industrial zone. The chemical forms of Pb, Zn, Cd, Tl, In and Sn in these sediments have also been studied using a sequential Keywords sediments. heavy metals. ores. smelter. pollution. sequential extraction 1 Introduction Ores treated and dusts and slags produced by smelting factories contain high amounts of heavy metals that
The contamination of 27 urban topsoils has been assessed around two lead and zinc smelters (Metal... more The contamination of 27 urban topsoils has been assessed around two lead and zinc smelters (Metaleurop Nord and Umicore) in the North of France. Eighteen trace elements have been analysed
Three unbuffered salt solutions used to estimate soil trace metal bioavailability were compared. ... more Three unbuffered salt solutions used to estimate soil trace metal bioavailability were compared. The objective was to evaluate chemical speciation of Cd, Cu, Pb, and Zn in 0.01 M CaCl2, 0.1 M NaNO3, and 1 M NH4NO3 extracts. The metal in each extract were speciated with a model that was optimized experimentally using an exchange resin. In NH4NO3, Cd, Cu, and Zn were completely complexed by NH3. In extracts of pH lower than 6.5, Pb was essentially present as free Pb2+ and metal‐organic complexes. In extracts of higher pH, PbCO3 and free Pb2+ were dominant. In CaCl2, Cu and Zn were mainly present as organic complexes and free Zn2+, respectively. In all extracts, 50% of Cd was free Cd2+ and 50% CdCl+. As pH increased, the proportions of free Pb2+ and organic complexes decreased while those of inorganic complexes increased. In NaNO3, Cd, Cu, and Zn were, respectively, mainly present as free Cd2+, organic complexes and free Zn2+. Speciation of Pb changed with pH as in NH4NO3. Similarities...
International Journal of Environmental Analytical Chemistry, 2004
A general study on uranium present at trace levels in anoxic sediments derived from Authie Bay (i... more A general study on uranium present at trace levels in anoxic sediments derived from Authie Bay (in northern France) has been undertaken. For that purpose, concentrations of various uranium species in pore waters and recovered solutions (after mineralization of sediments) were ...
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