Trace element accumulation in the moss Pseudoscleropodium purum in south Albania


1 Biochemistry Department, Faculty of Natural Sciences, University “Eqrem Çabej”, Gjirokastra, Albania

2 Chemistry Department, Faculty of Natural Sciences, University of Tirana, Albania.

3Department of Mathematics & Computer sciences, Faculty of Natural Sciences, University “Eqrem Çabej”, Gjirokastra, Albania

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For the first time the moss biomonitoring technique has been applied to air pollution monitoring in south Albania. The most important environmental features of mosses as a suitable tool of biomonitoring are: rootless, large surface, wide – spread population, a habit to grow in groups, long life – cycle, survival in a high – polluted environment, an ability to obtain nutrients from wet and dry deposition. The moss Pseudoscleropodium purum was used as a bioindicator and biomonitor of metal pollution. In this work the bioaccumulation of trace metals (Cd, Pb, Cu, Mn, Fe, Na, K and Zn) in moss samples collected from 9 sites of the southern part of Albania is presented. Moss samples were collected during the period September – October 2010 according to the guidelines of the UNECE ICP Vegetation. The concentrations of heavy metals in moss samples were determined using AAS technique equipped with flame and/or electro-thermal systems. AES method was used for Na and K determination. The variations of heavy metals concentrations with sampling sites are shown in heavy metal contamination diagrams. PCA and cluster analysis was used to identify the most polluted areas and characterize different pollution sources.

Key words: biomonitoring, Pseudoscleropodium purum, trace metals, atmospheric deposition

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