The uptake of Manganese-54 by green algae (Protococcoidal chlorella), Daphnia magna, and fathead minnows (Pimephales promelas)

Autor: Kwasnik, G., Vetter, R., Atchison, G.
Zdroj: Hydrobiologia; June 1978, Vol. 59 Issue: 3 p181-185, 5p
Abstrakt: Concentration factors (CF) of 54Mn for three aquatic species: green algae (Protococcoidal chlorella), Daphnia magna, and fathead minnows (Pimephales promelas)were determined following direct exposure to the isotope in solution. The maximum accumulation (CF = 911) in P. chlorellawas reached at 48 hours of exposure; the maximum uptake (CF = 65) in Daphniawas reached at 8 hours of exposure; and the maximum accumulation (CF = 22.6) in fathead minnows was at 128 hours of exposure. The data indicate that 54Mn accumulation decreases with ascent up a theoretical aquatic food chain when water is the only source of contamination.
Databáze: Supplemental Index
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