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Distribution and Pools of Mercury in Czech Forest Soils
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SYSNO ASEP 0424916 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Distribution and Pools of Mercury in Czech Forest Soils Author(s) Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
Shanley, J. (US)
Rohovec, Jan (GLU-S) RID, SAI
Hojdová, Maria (GLU-S) RID, SAI
Penížek, V. (CZ)
Buchtová, Jana (GLU-S) RID, SAISource Title Water, Air, and Soil Pollution. - : Springer - ISSN 0049-6979
Roč. 255, č. 3 (2014), s. 1-17Number of pages 17 s. Publication form Print - P Language eng - English Country NL - Netherlands Keywords mercury ; carbon ; sulfur ; oxalate-extractable Al ; Oxalate-extractable Fe ; Hg/C ratio ; Central Europe ; Black Triangle Subject RIV DD - Geochemistry R&D Projects GAP210/11/1369 GA ČR - Czech Science Foundation (CSF) Institutional support GLU-S - RVO:67985831 UT WOS 000334577800001 EID SCOPUS 84893190967 DOI 10.1007/s11270-013-1829-1 Annotation Parts of the Czech Republic received extreme loading of acid deposition from coal combustion in the second half of the twentieth century. Although associated Hg deposition was not directly measured, Hg deposition rates calculated from peat cores approach 100 μg m−2 year−1. We quantified the soil concentrations and pools of Hg with carbon (C), sulfur (S), and nitrogen (N)—elements closely associated with soil organic matter at five sites across the Czech Republic—four sites known for extreme deposition levels of S and N compounds in the twentieth century, and one site relatively less impacted. The site-specific means of O-horizon Hg concentrations ranged from 277 to 393 μg kg−1, while means of Hg concentrations in mineral soil ranged from 22 to 95 μg kg−1. The mean Hg/C ratio across sites increased from 0.5 μg Hg g−1 C in the Oi-horizon to 5 μg Hg g−1 C in the C-horizon due to the progressive mineralization of soil organic matter. The soil Hg/C increase was accompanied by a soil C/N decrease, another indicator of soil organic matter mineralization. Soil Hg/C also increased as soil C/S decreased, suggesting that Hg was stabilized by S functional groups within the soil organic matter. Mineral soil Hg pools (8.9–130.0 mg m−2) dominated over organic soil Hg pools (5.3–10.1 mg m−2) at all sites. Mineral soil Hg pools correlated more strongly with total soil S and oxalate-extractable Fe than with total soil C. Total soil Hg pools could be accounted for by a time period of atmospheric inputs that was short relative to the age of the soils. The cross site variability of Hg soil pools was not sensitive to the local Hg deposition history but rather related to the capacity of soil to store and stabilize organic matter. Workplace Institute of Geology Contact Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Year of Publishing 2015
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