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Buried Paleosols as Reference Objects for Assessing the Current Level of Soil Pollution with Lead in the Lower Volga Steppes
Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry.
Stockholm University, Faculty of Science, Department of Environmental Science and Analytical Chemistry.
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Number of Authors: 52019 (English)In: Eurasian Soil Science, ISSN 1064-2293, E-ISSN 1556-195X, Vol. 52, no 1, p. 34-49Article in journal (Refereed) Published
Abstract [en]

The estimation of soil contamination with anthropogenic lead requires uncontaminated analogues of the recent soils for comparison. For this purpose, a paleosol buried under a 2-m high burial mound of the Bronze Age and protected by it from atmospheric deposition during 4500 years was studied. The content and isotopic composition of mobile and total lead in the buried and recent soils (roadside and remote from lead sources) were compared. Obvious signs of anthropogenic contamination were revealed in only the upper layer of the roadside soil within 10 m from a highway. These were an increase in the absolute content of all lead forms; a high relative content of mobile forms; high ratios of Pb relative to Ti, Zr, and Y; and the similarity between isotopic compositions of the soil lead and the lead from modern atmospheric aerosols and Russian gasoline. Interestingly, no significant difference was found in the total lead contents or in the isotopic compositions between the recent soil remote from roads and the buried soil. However, some signs of anthropogenic impact could be revealed by the analysis of mobile lead forms, which make up a small portion of the total content.

Place, publisher, year, edition, pages
2019. Vol. 52, no 1, p. 34-49
Keywords [en]
lead of atmospheric deposition, soil lead, paleosol lead, soil lead forms, anthropogenic lead, stable lead isotopes, paleoenvironmental reconstruction
National Category
Agricultural Science, Forestry and Fisheries
Identifiers
URN: urn:nbn:se:su:diva-169314DOI: 10.1134/S1064229319010113ISI: 000467465800004OAI: oai:DiVA.org:su-169314DiVA, id: diva2:1319372
Available from: 2019-05-31 Created: 2019-05-31 Last updated: 2019-05-31Bibliographically approved

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