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The influence of different concentrations (1-2000 ppm) of Sn, Cd, Mn, Cu, Ni, Co, Pb, Zn and Hg on the survival of heterotrophic bacteria in bottom sediments of a eutrophic lake of gyttja type was examined. Cl, NO3 and SO4 salts were used in the experiment. Co, Ni and Ag were the least toxic heavy metals for heterotrophic bacteria of the bottom sediments of the eutrophic lake, whereas Hg, Sn, Pb,...
Studies were carried out on the effect of various methods of storing municipal refuse upon the survival and passage of saprophytic microorganisms (TVC, Gram positive bacteria, Gram negative bacteria, thermotolerants, yeasts), bacteria indicative of sanitary conditions (TC, FC, E. coli, FS, enterococci, Clostridium perfringens) and opportunistic pathogens (hemolytic streptococci, staphylococci, in...
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