Počet záznamů: 1

Changes in Mercury Deposition in a Mining and Smelting Region as Recorded in Tree Rings

  1. 1.
    0360810 - GLU-S 2012 RIV NL eng J - Článek v odborném periodiku
    Hojdová, Maria - Navrátil, Tomáš - Rohovec, Jan - Žák, Karel - Vaněk, A. - Chrastný, V. - Bače, R. - Svoboda, M.
    Changes in Mercury Deposition in a Mining and Smelting Region as Recorded in Tree Rings.
    Water, Air and Soil Pollution. Roč. 216, 1/4 (2011), s. 73-82 ISSN 0049-6979
    Grant CEP: GA ČR GP526/09/P404
    Výzkumný záměr: CEZ:AV0Z30130516
    Klíčová slova: mercury * dendrochemistry * trees * geochemical archives
    Kód oboru RIV: DD - Geochemie
    Impakt faktor: 1.625, rok: 2011

    Metal mining and processing in the central Czech Republic has led to the contamination of surrounding soils and vegetation. In this study, Hg concentrations were measured in spruce (Picea abies L.) and beech (Fagus sylvatica L.) tree rings to monitor historical Hg deposition in the area. The highest Hg concentrations were found in spruce at an HgS smelting contaminated site (up to 15 ng g−1), probably reflecting smelting activities at the end of the nineteenth century. In the vicinity of a Pb smelter, Hg concentrations increased from the 1950s to maxima (up to 8.4 ng g−1) in the 1970s, corresponding with a peak of metallurgical production and smelter emissions in the mid 1970s. A decreasing trend in Hg concentrations since the 1980s was probably related to improvements in flue gas cleaning technologies. The beech trees, which grow at a site between two smelters and range in age from 150 to 220 years, seem to reflect deposition from both point sources.
    Trvalý link: http://hdl.handle.net/11104/0198273