DBPapers
DOI: 10.5593/SGEM2015/B32/S14.075

THE EXPERIENCE WITH DENDROCHRONOLOGICAL ANALYSIS OF MERCURY IN FOREST TREE SPECIES IN SLOVAKIA

A.Zacharova, H.Ollerova
Thursday 24 September 2015 by Libadmin2015

References: 15th International Multidisciplinary Scientific GeoConference SGEM 2015, www.sgem.org, SGEM2015 Conference Proceedings, ISBN 978-619-7105-37-7 / ISSN 1314-2704, June 18-24, 2015, Book3 Vol. 2, 561-566 pp

ABSTRACT
Dendrochronolgy uses tree-rings to date the change in the environment. The paper brings results of mercury analyses in tree rings of five forest tree species sampled in five various areas in Slovakia. The research was done in industry areas (near a thermal power plant and chemical industry factory), near a crematorium and in flysch zone of the Western Carpathians, which should not be affected by anthropogenic activities. Wood samples were taken from Norway spruce (Picea abies), beech (Fagus sylvaticus), Scots pine (Pinus sylvestris), birch (Betula pendula) and alder (Alnus glutinosa). Wood was sampled with Pressler’s increment borer. Samples were analyzed with the Advanced Mercury Analyzer (AMA 254). The values of mercury in wood ranged from 0.002 to 0.111 mg.kg-1 depending on the tree species, the site (geological substrate and emission load) and the age of the wood sample. Reliability of dendrochronology for dating changes in Hg content in wood needs great indicator, a tree species which is able to accumulate mercury in its woody biomass. The paper includes some practical aspects of the dendrochronology utilization for analysing mercury in the environment as well as assessment of its significance as monitoring method.

Keywords: dendrochronology, mercury, forest tree species, tree rings

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