Podrobnosti záznamu

Název
    Changes in Mercury Deposition in a Mining and Smelting Region as Recorded in Tree Rings
Autor
    Bače, Radek
    Chrastný, Vladislav
    Hojdová, Maria
    Navrátil, Tomáš
    Rohovec, Jan
    Svoboda, Miroslav
    Vaněk, Aleš
    Žák, Karel
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Water, Air and Soil Pollution
Svazek/č.
    Roč. 216, č. 1-4
Strany
    10
Rok
    2011
Výraz tezauru
    Mercury, Dendrochemistry, Trees, Geochemical archives, Czech Republic
Klíčové slovo
    Changes
    Deposition
    Mercury
    Mining
    Recorded
    Region
    Rings
    Smelting
    Tree
Abstrakt (anglicky)
   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.
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (RIV)
Zdrojový formát
    R
Datum importu
    15. 10. 2014