Springer Online Journal Archives 1860-2000
Chemistry and Pharmacology
Energy, Environment Protection, Nuclear Power Engineering
Abstract A mixture of radium-224, lead-212 and barium-133 as well as a mixture of lead-210 and bismuth-210 were used for the investigation of these elements in algae Scenedesmus obliquus in dependence of equilibrium pH in the absence and in the presence of other salts. It has been found that the affinity constant KM decreases in the following order (lg KM values are given in parentheses): Ra2+ (5.1), Ba2+ (4.8), Sr2+ and Ca2+ (4.6), Mg2+ (4.2), Cs+, Rb+ and NH 4 + (2.9), K+ (2.7), Na+ (2.6) and Li+ (2.4). The uptake of lead and bismuth is more complicated because of the accumulation of free cations as well as hydroxo complexes.
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