Stable Cu and Zn isotope ratios as tracers of sources and transport of Cu and Zn in contaminated soil

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autorschaft

Externe Organisationen

  • Johannes Gutenberg-Universität Mainz
  • University of Bern
  • Goethe-Universität Frankfurt am Main
  • Soil Science and Conservation Research Institute Slovakia
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Details

OriginalspracheEnglisch
Seiten (von - bis)6801-6813
Seitenumfang13
FachzeitschriftGeochimica et cosmochimica acta
Jahrgang74
Ausgabenummer23
PublikationsstatusVeröffentlicht - 1 Dez. 2010
Extern publiziertJa

Abstract

Copper and Zn metals are produced in large quantities for different applications. During Cu production, large amounts of Cu and Zn can be released to the environment. Therefore, the surroundings of Cu smelters are frequently metal-polluted. We determined Cu and Zn concentrations and Cu and Zn stable isotope ratios (δ65Cu, δ66Zn) in three soils at distances of 1.1, 3.8, and 5.3km from a Slovak Cu smelter and in smelter wastes (slag, sludge, ash) to trace sources and transport of Cu and Zn in soils. Stable isotope ratios were measured by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS) in total digests. Soils were heavily contaminated with concentrations up to 8087μgg-1 Cu and 2084μgg-1 Zn in the organic horizons. The δ65Cu values varied little (-0.12‰ to 0.36‰) in soils and most wastes and therefore no source identification was possible. In soils, Cu became isotopically lighter with increasing depth down to 0.4m, likely because of equilibrium reactions between dissolved and adsorbed Cu species during transport of smelter-derived Cu through the soil. The δ66ZnIRMM values were isotopically lighter in ash (-0.41‰) and organic horizons (-0.85‰ to -0.47‰) than in bedrock (-0.28‰) and slag (0.18‰) likely mainly because of kinetic fractionation during evaporation and thus allowed for separation of smelter-Zn from native Zn in soil. In particular in the organic horizons large variations in δ66Zn values occur, probably caused by biogeochemical fractionation in the soil-plant system. In the mineral horizons, Zn isotopes showed only minor shifts to heavier δ66Zn values with depth mainly because of the mixing of smelter-derived Zn and native Zn in the soils. In contrast to Cu, Zn isotope fractionation between dissolved and adsorbed species was probably only a minor driver in producing the observed variations in δ66Zn values. Our results demonstrate that metal stable isotope ratios may serve as tracer of sources, vertical dislocation, and biogeochemical behavior in contaminated soil.

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Stable Cu and Zn isotope ratios as tracers of sources and transport of Cu and Zn in contaminated soil. / Bigalke, Moritz; Weyer, Stefan; Kobza, Jozef et al.
in: Geochimica et cosmochimica acta, Jahrgang 74, Nr. 23, 01.12.2010, S. 6801-6813.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

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title = "Stable Cu and Zn isotope ratios as tracers of sources and transport of Cu and Zn in contaminated soil",
abstract = "Copper and Zn metals are produced in large quantities for different applications. During Cu production, large amounts of Cu and Zn can be released to the environment. Therefore, the surroundings of Cu smelters are frequently metal-polluted. We determined Cu and Zn concentrations and Cu and Zn stable isotope ratios (δ65Cu, δ66Zn) in three soils at distances of 1.1, 3.8, and 5.3km from a Slovak Cu smelter and in smelter wastes (slag, sludge, ash) to trace sources and transport of Cu and Zn in soils. Stable isotope ratios were measured by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS) in total digests. Soils were heavily contaminated with concentrations up to 8087μgg-1 Cu and 2084μgg-1 Zn in the organic horizons. The δ65Cu values varied little (-0.12‰ to 0.36‰) in soils and most wastes and therefore no source identification was possible. In soils, Cu became isotopically lighter with increasing depth down to 0.4m, likely because of equilibrium reactions between dissolved and adsorbed Cu species during transport of smelter-derived Cu through the soil. The δ66ZnIRMM values were isotopically lighter in ash (-0.41‰) and organic horizons (-0.85‰ to -0.47‰) than in bedrock (-0.28‰) and slag (0.18‰) likely mainly because of kinetic fractionation during evaporation and thus allowed for separation of smelter-Zn from native Zn in soil. In particular in the organic horizons large variations in δ66Zn values occur, probably caused by biogeochemical fractionation in the soil-plant system. In the mineral horizons, Zn isotopes showed only minor shifts to heavier δ66Zn values with depth mainly because of the mixing of smelter-derived Zn and native Zn in the soils. In contrast to Cu, Zn isotope fractionation between dissolved and adsorbed species was probably only a minor driver in producing the observed variations in δ66Zn values. Our results demonstrate that metal stable isotope ratios may serve as tracer of sources, vertical dislocation, and biogeochemical behavior in contaminated soil.",
author = "Moritz Bigalke and Stefan Weyer and Jozef Kobza and Wolfgang Wilcke",
note = "Funding information: We thank the Earth System Science Research Center (“Geocycles”) of the Johannes Gutenberg University Mainz for funding, Christian Guschker for soil sampling and determination of standard soil properties and Sylvia Bondzio, Michael Kersten, and Dieter Mertz for various support. We particularly thank Katarina Ors{\'a}gov{\'a} for her support in reconstructing the history of Cu production in Krompachy and in obtaining the waste samples. We thank the staff of the Cu smelter at Krompachy for their cooperation. We also thank the associate editor Dr. Derek Vance and three anonymous reviewers for helpful and constructive comments and questions.",
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T1 - Stable Cu and Zn isotope ratios as tracers of sources and transport of Cu and Zn in contaminated soil

AU - Bigalke, Moritz

AU - Weyer, Stefan

AU - Kobza, Jozef

AU - Wilcke, Wolfgang

N1 - Funding information: We thank the Earth System Science Research Center (“Geocycles”) of the Johannes Gutenberg University Mainz for funding, Christian Guschker for soil sampling and determination of standard soil properties and Sylvia Bondzio, Michael Kersten, and Dieter Mertz for various support. We particularly thank Katarina Orságová for her support in reconstructing the history of Cu production in Krompachy and in obtaining the waste samples. We thank the staff of the Cu smelter at Krompachy for their cooperation. We also thank the associate editor Dr. Derek Vance and three anonymous reviewers for helpful and constructive comments and questions.

PY - 2010/12/1

Y1 - 2010/12/1

N2 - Copper and Zn metals are produced in large quantities for different applications. During Cu production, large amounts of Cu and Zn can be released to the environment. Therefore, the surroundings of Cu smelters are frequently metal-polluted. We determined Cu and Zn concentrations and Cu and Zn stable isotope ratios (δ65Cu, δ66Zn) in three soils at distances of 1.1, 3.8, and 5.3km from a Slovak Cu smelter and in smelter wastes (slag, sludge, ash) to trace sources and transport of Cu and Zn in soils. Stable isotope ratios were measured by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS) in total digests. Soils were heavily contaminated with concentrations up to 8087μgg-1 Cu and 2084μgg-1 Zn in the organic horizons. The δ65Cu values varied little (-0.12‰ to 0.36‰) in soils and most wastes and therefore no source identification was possible. In soils, Cu became isotopically lighter with increasing depth down to 0.4m, likely because of equilibrium reactions between dissolved and adsorbed Cu species during transport of smelter-derived Cu through the soil. The δ66ZnIRMM values were isotopically lighter in ash (-0.41‰) and organic horizons (-0.85‰ to -0.47‰) than in bedrock (-0.28‰) and slag (0.18‰) likely mainly because of kinetic fractionation during evaporation and thus allowed for separation of smelter-Zn from native Zn in soil. In particular in the organic horizons large variations in δ66Zn values occur, probably caused by biogeochemical fractionation in the soil-plant system. In the mineral horizons, Zn isotopes showed only minor shifts to heavier δ66Zn values with depth mainly because of the mixing of smelter-derived Zn and native Zn in the soils. In contrast to Cu, Zn isotope fractionation between dissolved and adsorbed species was probably only a minor driver in producing the observed variations in δ66Zn values. Our results demonstrate that metal stable isotope ratios may serve as tracer of sources, vertical dislocation, and biogeochemical behavior in contaminated soil.

AB - Copper and Zn metals are produced in large quantities for different applications. During Cu production, large amounts of Cu and Zn can be released to the environment. Therefore, the surroundings of Cu smelters are frequently metal-polluted. We determined Cu and Zn concentrations and Cu and Zn stable isotope ratios (δ65Cu, δ66Zn) in three soils at distances of 1.1, 3.8, and 5.3km from a Slovak Cu smelter and in smelter wastes (slag, sludge, ash) to trace sources and transport of Cu and Zn in soils. Stable isotope ratios were measured by multicollector inductively coupled plasma mass spectrometry (MC-ICP-MS) in total digests. Soils were heavily contaminated with concentrations up to 8087μgg-1 Cu and 2084μgg-1 Zn in the organic horizons. The δ65Cu values varied little (-0.12‰ to 0.36‰) in soils and most wastes and therefore no source identification was possible. In soils, Cu became isotopically lighter with increasing depth down to 0.4m, likely because of equilibrium reactions between dissolved and adsorbed Cu species during transport of smelter-derived Cu through the soil. The δ66ZnIRMM values were isotopically lighter in ash (-0.41‰) and organic horizons (-0.85‰ to -0.47‰) than in bedrock (-0.28‰) and slag (0.18‰) likely mainly because of kinetic fractionation during evaporation and thus allowed for separation of smelter-Zn from native Zn in soil. In particular in the organic horizons large variations in δ66Zn values occur, probably caused by biogeochemical fractionation in the soil-plant system. In the mineral horizons, Zn isotopes showed only minor shifts to heavier δ66Zn values with depth mainly because of the mixing of smelter-derived Zn and native Zn in the soils. In contrast to Cu, Zn isotope fractionation between dissolved and adsorbed species was probably only a minor driver in producing the observed variations in δ66Zn values. Our results demonstrate that metal stable isotope ratios may serve as tracer of sources, vertical dislocation, and biogeochemical behavior in contaminated soil.

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U2 - 10.1016/j.gca.2010.08.044

DO - 10.1016/j.gca.2010.08.044

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VL - 74

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JO - Geochimica et cosmochimica acta

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