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- Title
COMPARATIVE STUDY OF METAL ACCUMULATION IN LICHENS AND TREE LEAVES IN ORDER TO USE THEM AS BIOINDICATORS.
- Authors
Kékedy-Nagy, Ladislau; Bartók, Katalin
- Abstract
The aim of this work is to study the bioaccumulation of some elements in plants in order to use them as bioindicators by passive monitoring. It was quantified the Na, K, Li, Ca, Mg, Zn, Fe, Cd, Pb and Cu content by flame atomic spectrometry of some lichen samples (Xanthoria parietina), walnut (Juglans regia), plum (Prunus domestica) and canadian poplar (Populus x canadensis) collected in the Şărmăşag village area (Salaj county). The leaves were collected during July and September, the lichen samples only in September 2005. At the same time and in same area, soil samples have been collected from 0 - 10 cm depth. The chemometric processing of the data reveals that the lichen, tree leave and soil samples differ significantly concerning their chemical composition. The discriminant capacity of the metals, on which the classification is based, varies in order Li>Zn>Cu>Mg>Na. The Mg content of leaves is in inverse proportion with that of in the soil. At the same time, the results show similar chemical composition of plum and canadian poplar tree leaves. The tree leaves accumulate selectively the heavy metals in order Zn > Fe = Cu. The Pb and Cd concentration in most of the cases were under the detection limits, fact that suggests the absence of heavy metal pollution in the studied area.
- Subjects
COMPARATIVE studies; COMPARATIVE method; LICHENS; METALS; LEAVES; TREES; SPECTROMETRY; XANTHORIA; CHEMOMETRICS
- Publication
Contributii Botanice, 2008, Vol 43, p173
- ISSN
0069-9616
- Publication type
Article