Evaluation of Storage Level for Some Heavy Metals and Others Elements into Lichens Species Growing On Larix Decidua in Bucegi Area

SUMMARY

It is well known the affinity of lichens for heavy metals absorption, and used as biomonitors in environmental protection [4]. Also they are studied for their hyper accumulation level in the view to be used as natural’s sources for rare and noble metals. This work is about two lichens species which are growing on Larix decidua’s bark. It was collected and analyzed Usnea barbata and Peltigera canina. Both lichens species were growing in closer association each other on bark.The samples were analyzed by EDXRF (fluorescence –spectrometer) method with ELVA-X.In this way were registered all the elements which were in a concentration higher then 1ppm. It were determinate the concentrations of iron, copper, zinc, chromium, manganese, lead, cobalt. In some analysed cases were registered nickel, strontium and gold. Most important there were the absorption features of lichens which was different from a place to other in studied aria. In the east of this zone both lichens species had the same characteristics of storage heavy metals.