Počet záznamů: 1
Larch Tree Rings as a Tool for Reconstructing 20th Century Central European Atmospheric Mercury Trends
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SYSNO ASEP 0496017 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Larch Tree Rings as a Tool for Reconstructing 20th Century Central European Atmospheric Mercury Trends Tvůrce(i) Navrátil, Tomáš (GLU-S) RID, SAI, ORCID
Nováková, Tereza (GLU-S) SAI, ORCID
Shanley, J. B. (US)
Rohovec, Jan (GLU-S) RID, SAI
Matoušková, Šárka (GLU-S) RID, SAI
Norton, S. A. (US)
Vaňková, Maria (GLU-S) RID, SAI, ORCIDCelkový počet autorů 7 Zdroj.dok. Environmental Science and Technology - ISSN 0013-936X
roč. 52, č. 19 (2018), s. 11060-11068Poč.str. 9 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova amalgamation ; chloralkali-plant ; lead smelter ; environmental implications ; peat deposit ; air-quality ; pollution ; emissions Vědní obor RIV DD - Geochemie Obor OECD Environmental sciences (social aspects to be 5.7) CEP GA16-14762S GA ČR - Grantová agentura ČR Institucionální podpora GLU-S - RVO:67985831 UT WOS 000446542100018 EID SCOPUS 85054091669 DOI 10.1021/acs.est.8b02117 Anotace We propose the tree rings of European Larch (Larix decidua) as a widely available and reliable geochemical archive of local and regional changes in atmospheric mercury (Hg). Mean Hg concentrations in larch tree rings from 8 background sites across the Czech Republic ranged from 2.2 to 4.8 μg kg−1, the maximum concentrations occurred in the period 1951−1970. At 3 sites impacted by Hg-emission sources [gold amalgamation processing, caustic soda production, and lead (Pb) ore smelting] mean larch tree ring Hg concentrations were significantly elevated relative to background sites. Changes in larch tree ring Hg concentrations were temporally coherent with known activities at the sites that would alter Hg emissions, the nearly simultaneous response in tree rings indicated little or no translocation of Hg within the larch bole. Based on the present-day atmospheric Hg concentration of 1.63 ng m−3 at the intensively monitored Czech Global Mercury Observation System site and the most recent mean tree ring Hg concentration of 2.8 μg kg−1 in colocated larch trees, we developed a simple distribution model of Hg between the atmosphere and larch tree rings. We applied the model using observed changes of Hg in larch tree rings from the countrywide background sites to reconstruct past atmospheric Hg concentrations in central Europe. Modeled Hg concentrations were in agreement with annual means from the European Monitoring and Evaluation Programme observatories. Pracoviště Geologický ústav Kontakt Jana Popelková, popelkova@gli.cas.cz, Sabina Janíčková, Tel.: 233 087 272 Rok sběru 2019
Počet záznamů: 1