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tom 28
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nr 2
155-159
PL
Metodą zimnych par absorpcyjnej spektrometrii atomowej (CV-AAS) oznaczono stężenie rtęci w kapeluszach, trzonach i całych owocnikach grzybów oraz w glebie spod grzybów z terenu Gdańska i okolic. Próbki do badań zebrano w latach 1989-1993. Grzyby i glebę roztwarzano na gorąco ze stężonym HNO3.
EN
Mercury concentration was determined in the fruiting bodies of some wild-grown mushrooms of the Agaricaceae, Stropharicaceae, Tricholomataceae, Amanitaceae, Boletacaceae, Russuaceae, Cop- rinaceae, Lycoperdaceae, Centharellaceae, Paxillaceae and Strophariaceae families, and the underlying soil, collected from potentially polluted and nom-polluted sites in the city of Gdańsk and the adjacent area in 1989-93. In total, 381 samples (323 of caps and stalks and 58 of soil) were analysed. Mushroom (caps and stalks) - and soil samples were wet-digested in a whole glass apparatus consisting of round-bottom flask, partial condenser, and a water cooler. The final determination was by cold-vapour atomic absorption spectrometry (CV-AAS) using a full - automated mercury analysis system (Mercury Monitor 3200, Thermo Separation Products Co., USA). The ranges of mean mercury concentration in the mushrooms examined were between 18 and 2400 µg/kg dry weight in caps (total range 10 - 50000 µg/kg) and between 41 and 14000 µg/kg dry weight in stalks (total range 8,9-31 000 µg/kg). Mercury concentration in the examined soil was between 25 ± 36 (11-29) and 800 ± 880 (130-2700) µg/kg dry weight. The BCF values of mercury in the examined mushrooms were between 0,28 and 290 in caps, and between 0,057 and 280 in stalks.
EN
Application of phytoremediation process for the purification of the environment, particularly of surface water (running or standing) may be a future alternative to existing standard purification methods, in particular for heavy metal removal. Numerous hyperaccumulators are known which can be used for the purification of water, soil or sediment such as Salvinia or Lemna lemnids, occurring in temperate climates, and thus on the territory of Poland. Ability of mercury accumulation by Salvinia natans and Lemna minor was analyzed. The phytoremediation ability of lemnids was compared depending on their origin - commercial (artificial) cultures and those obtained from the natural environment. Phytoremediation process was carried out for a period of 14 days for the concentration of 0.15 mg Hg/dm3 and 0.2 mg Hg/dm3. It was found that both Salvinia natans and Lemna minor show a significant increase in biomass in the presence of mercury, even up to 76% for Lemna minor and 40% for Salvinia natans. The result of this increase was incorporation a considerable amount of mercury in the tissues of plant. The quantity of mercury in plants biomass was in the range of 41.16-115.28 mg Hg/kg DM, while in the control samples - only 0.2-0.6 mg Hg/kg DM.
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