Using the bioindication method for determining air pollution by heavy metals

The results of studies chemical pollution (Pb, Zn) perennial grasses—Elymus repens L., Artemisia absinthium and Hypericum perforatum L.—on background plots within the areas impact industrial enterprises in Kropyvnytskyi (Ukraine) are presented. It is noted that most dangerous. activity considered, result which heavy metals enter air. Testing plants (stems leaves) was carried out at a distance 10–100 m from enterprises. content aboveground part analysed by atomic absorption spectrophotometer laboratory Department Exploratory Ecological Geochemistry, IGMR NAS Ukraine. comparison sorption properties different same phases development allowed with bioindication capabilities to be identified. analysis showed effectively accumulate maximum amount atmospheric air end summer dormancy phase (second half August). At this time plant requires minimum nutrients it takes soil. Stems leaves grasses actively aerosols fine dust on their surface due secretions formation mucous film adsorbs metal ions. background, minimum, determined. Comparing samples study plots, found E. near effective bioindicator pollution. In order determine level using methods, index contamination (Sр) proposed, ratio concentration coefficient amount. An assessment scale for has been developed based plants: degree 1–3—weak, 3–6—medium, 6–9—strong, more than 9—very strong. proposed coefficients allow conducting situational methods.