Rtec w grzybach i glebie spod grzybow z terenu Gdanska i okolic

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.

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.