Abstract
In the present study, the deposition of three heavy metals (Cd, Co and Cr) in the county of Obrenovac (Serbia) is determined using four moss taxa (Bryum argenteum, Bryum capillare, Brachythecium sp. and Hypnum cupressiforme) as bioindicators. Distribution of average heavy metal content in all mosses in the county of Obrenovac is presented in maps, while long term atmospheric deposition (in the mosses Bryum argenteum and B. capillare) and short term atmospheric deposition (in the mosses Brachythecium sp. and Hypnum cupressiforme) are discussed and in tables. Areas of the highest contaminations are highlighted.
Highlights
Surveillance of heavy metals in mosses was originally established in the Scandinavian countries in the 1980s
Hypnum cupressiforme is one of the standard species used in Europe to survey heavy metal deposition survey (B u s e et al, 2003), while the other three are standard in Europe, but do not grow in this region
In estimating which other species are eligible for use in monitoring heavy metal deposition, we relied on the experience of Thöni (1996), Herpin et al (1994), Siewers and Hairpin (1998), Zechmeister (1994), and R o s s (1990)
Summary
Surveillance of heavy metals in mosses was originally established in the Scandinavian countries in the 1980s. Hypnum cupressiforme Hedw.) were used to scan short term atmospheric deposition of heavy metals, considering that these taxa are not strongly attached to the substrate and accumulate mostly from precipitation (Thöni et al, 1996; F a u s – Kessler et al, 2001; Fernández and Carballeira , 2001; Cuoto et al, 2004). 15 heavy metals were analyzed in all, only deposition and distribution of cadmium, cobalt and, chromium are treated in the present study, due to limitation of space. Cobalt is present in the Earth’s crust in quantities 18 g/t and together with scandium is the rarest element in its upper layers This heavy metal is a collateral product in production of nickel, cupper and lead (Greenwood and Earnshaw, 1988). In water it is 2 mg of all Cr/l [(0.1 mg Cr(VI)/l)], while in drinking water it is 0.02 mg Cr(VI)/l
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