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Tytuł:
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Osmium isotope geochemistry of steel plant emissions using tree bark biomonitoring.
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Autorzy:
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Kousehlar M; Department of Geology and Environmental Earth Science, Miami University, Oxford, OH, USA. Electronic address: .
Widom E; Department of Geology and Environmental Earth Science, Miami University, Oxford, OH, USA.
Kuentz D; Department of Geology and Environmental Earth Science, Miami University, Oxford, OH, USA.
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Źródło:
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Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2021 Mar 01; Vol. 272, pp. 115976. Date of Electronic Publication: 2020 Nov 03.
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: Barking, Essex, England : Elsevier Applied Science Publishers, c1987-
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MeSH Terms:
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Osmium*/analysis
Steel*
Biological Monitoring ; Cities ; Environmental Monitoring ; Isotopes ; Plant Bark/chemistry
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Contributed Indexing:
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Keywords: Os isotopes; Steel plant; Tree bark
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Substance Nomenclature:
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0 (Isotopes)
12597-69-2 (Steel)
2E7M255OPY (Osmium)
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Entry Date(s):
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Date Created: 20201111 Date Completed: 20210210 Latest Revision: 20210210
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Update Code:
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20240105
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DOI:
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10.1016/j.envpol.2020.115976
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PMID:
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33172700
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We report for the first time the Os isotopic composition of tree bark samples from a steel town. Osmium concentrations and 187 Os/ 188 Os isotopic ratios of ashed bark samples range from 1.40 to 24 ppt and 0.70 to 1.54, respectively, with the lowest 187 Os/ 188 Os recorded in samples close to the steel plant. Compositional variations in the bark samples can be explained by mixing between at least two sources with different Os isotopic signatures: a radiogenic source consistent with crust-derived materials and a relatively less radiogenic source consistent with mantle-derived chromite. The exact origin of the radiogenic Os component cannot be constrained, as background signatures and crustal materials used in the steel industry (e.g., coal and iron ore) likely have overlapping radiogenic signatures. Cr shows a similar distribution pattern to Os, indicating that both metals have a common origin, which provides further evidence that the Os budget in the bark samples is controlled primarily by the chromite used in the steel manufacturing. This study shows that Os isotopes are an effective tool for tracing steel production-related emissions.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2020 Elsevier Ltd. All rights reserved.)
