Buried Paleosols as Reference Objects for Assessing the Current Level of Soil Pollution with Lead in the Lower Volga Steppes
- Autores: Pampura T.1, Meili M.2, Holm K.2, Candaudap F.3, Probst A.4
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Afiliações:
- Institute of Physicochemical and Biological Problems of Soil Science, Russian Academy of Sciences
- Department of Environmental Science and Analytical Chemistry, Stockholm University
- Observatory Midi-Pyrénées, National Center for Scientific Research (CNRS)
- EcoLab, Université de Toulouse, CNRS
- Edição: Volume 52, Nº 1 (2019)
- Páginas: 34-49
- Seção: Soil Chemistry
- URL: https://journals.rcsi.science/1064-2293/article/view/224852
- DOI: https://doi.org/10.1134/S1064229319010113
- ID: 224852
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Resumo
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.
Sobre autores
T. Pampura
Institute of Physicochemical and Biological Problems of Soil Science, Russian Academy of Sciences
Autor responsável pela correspondência
Email: pampura@mail.ru
Rússia, Pushchino, 142290
M. Meili
Department of Environmental Science and Analytical Chemistry, Stockholm University
Email: pampura@mail.ru
Suécia, Stockholm, SE-10691
K. Holm
Department of Environmental Science and Analytical Chemistry, Stockholm University
Email: pampura@mail.ru
Suécia, Stockholm, SE-10691
F. Candaudap
Observatory Midi-Pyrénées, National Center for Scientific Research (CNRS)
Email: pampura@mail.ru
França, Toulouse
A. Probst
EcoLab, Université de Toulouse, CNRS
Email: pampura@mail.ru
França, Toulouse