Change search
ReferencesLink to record
Permanent link

Direct link
Osmium in environmental samples from Northeast Sweden: Part I. Evaluation of background status
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
ALS Analytica AB, Luleå.
ALS Analytica AB, Luleå.
Show others and affiliations
2007 (English)In: Science of the Total Environment, ISSN 0048-9697, E-ISSN 1879-1026, Vol. 386, no 1-3, 145-158 p.Article in journal (Refereed) Published
Abstract [en]

Osmium (Os) concentrations and 187Os/188Os isotope abundance ratios are presented for sedimentary materials, soils, humus, plants, mushrooms, mosses and lichens collected in the vicinity of the town of Luleå, Northeast Sweden, the data for biological specimens being the first reported. Contributions from sampling and varying exposure time to the observed environmental variability were evaluated. Sedimentary materials (from both fresh and brackish water) are most elevated in radiogenic 187Os, followed by inorganic soil horizons, mushrooms and humus. The Os isotopic compositions of plants, mosses and lichens are much less radiogenic, with mean 187Os/188Os lying within a relatively narrow 0.3-0.6 range. Significant temporal variations in Os concentrations and isotopic compositions of plant samples are attributed to integrative uptake of airborne Os with non-radiogenic composition. Measured Os concentrations in biological matrices increase in the order: small shrub leaves (blueberry and lingonberry) ≤ spruce needles ≤ mushrooms ≤ tree leaves ≤ pine needles < mosses lichens. The concentrations found in three different species of plant were used to provide the first estimates of gaseous osmium tetroxide (OsO4) in the environment. Though the Os content of samples from Northeast Sweden does not differ significantly from matrix-matched international reference materials (not certified for Os) of abiotic origin, the estimates of gaseous OsO4 concentrations are roughly an order of magnitude higher than have been reported for particle-bound Os in other studies. The pronounced spatial variations between relatively closely situated sites in mean 187Os/188Os ratios for samples of the same species (presumably with the same dominating uptake mechanism) point to the presence of different local Os sources. This study therefore demonstrates that emissions of Os from automobile catalytic converters are not the only source of contemporary environmental contamination.

Place, publisher, year, edition, pages
2007. Vol. 386, no 1-3, 145-158 p.
Research subject
Applied Geology
URN: urn:nbn:se:ltu:diva-6677DOI: 10.1016/j.scitotenv.2007.06.011Local ID: 4f062f50-66c8-11dc-a0c3-000ea68e967bOAI: diva2:979563

Validerad; 2007; 20070919 (ysko)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2016-10-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Rodushkin, IlyaEngström, EmmaBaxter, Douglas
By organisation
Geosciences and Environmental Engineering
In the same journal
Science of the Total Environment

Search outside of DiVA

GoogleGoogle ScholarTotal: 1 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 1 hits
ReferencesLink to record
Permanent link

Direct link