Metal and metalloid contents in lichens from specially protected conservation areas
А.F. Meysurova, A.A. Notov
Section: Chemistry of natural environments and objects
The aim of this work is to evaluate the heavy metal and metalloids contents in indicator lichens inside two nature
reserves situated within the Tver region that has a complex infrastructure and large number of industrial zones. Inductively-coupled plasma atomic emission spectral analysis is used to test for the gross and average ratio of 17 metals and
metalloids (Al, As, Cd, Co, Cr, Cu, Ge, Fe, Mn, Mo, Ni, Pb, Sb, Sn, Ti, V, Zn) in Hypogymnia physodes lichen samples.
The average content of the most elements identified in samples from Zavidovo National Park (ZNP) is higher than in
the samples from Central Forest State Nature Biosphere Reserve (CFSNBR). There are such metals as titanium, copper, arsenic, cobalt, molybdenum, and tin among them. Differences are the result of different levels and regimens of air
moisture saturation, localization of working production plants, degree of anthropogenic transformation of the territory.
Spatial distribution of areas with much higher metal concentrations on reserve territory is resulted apparently from
variation in air humidity to large extent. In ZNP addiction between qualitative and quantitative metal impact is defined
more clearly by level and character of artificial territory transformation. Moreover, in ZNP wide marshy and forest areas
in valley on the Lob’ river were identified, which have conservation importance as they are characterized by lack or very
low concentrations of many metals. So it would be useful to take advantage while zoning and correction of regimes.
Keywords: ICP-AES method, biomonitoring, heavy metals, epiphytic lichens, baseline monitoring, pollution, conservation area