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Evaluation of regional heavy metal deposition by multivariate analysis of element contents in pine tree barks |
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| Authors: | Gernot Huhn Horst Schulz Hans -Joachim Stärk Rainer Tölle Gerrit Schüürmann |
| Institution: | 1. Department of Chemical Ecotoxicology, Centre for Environmental Research Leipzig-Halle Ltd., P.O. Box 2, D-04301, Leipzig, Germany 2. Department of Analytical Chemistry, Centre for Environmental Research Leipzig-Halle Ltd., P.O. Box 2, D-04301, Leipzig, Germany 3. Department of Ecology and Resource Management, Humboldt-University of Berlin, P.O. Box 1118, D-12562, Berlin, Germany |
| Abstract: | The airborne immission of heavy metals in the conservation area “Dübener Heide” nearby Bitterfeld was evaluated by biomonitoring studies with bark samples of 60-years-old scots pine (Pinus sylvestris L.). Nitric acid digestion and hydrochloric acid extraction of bark was followed by ICP-AES and ICP-MS analysis of the elements Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb and Zn. Fe and especially Cr were only partly soluble in hydrochloric acid. These elements deposited mostly as insoluble oxides, and their contents in the bark correlate significantly with Ca and S as elements of alkaline and acid deposition. Factor and cluster analysis of all element contents are used for the characterization and evaluation of heavy metal deposition types, which is shown to be a useful tool in forest monitoring control. |
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