Über den Verteilungszustand gelöster Stoffe in extremer Verdünnung

Radiocolloids

“…Werner (59,60) showed that the amount of ThC centrifuged from solutions of ThB-C prepared from purified (by previous centrifugation or ultrafiltration) water was less than that centrifuged from such solutions prepared from nonpurified water. Further experiments by Werner indicated the influence of acids, bases and salts upon the amount of ThC that could be removed by centrifugation.…”

“…Centrifugation. Werner (59,60) centrifuged solutions of ThB-C containing varying concentrations of a number of electrolytes. The addition of I1C1, HN03, or H2S04 in concentrations from 10-5 N to 10_1 N caused the per cent ThB centrifuged to decrease as the amount of acid was increased.…”

“…Careful purification of solvents before using them to prepare solutions of radioelements diminishes radiocolloidal formation, but does not eliminate it (47,58,59).…”

“…1, Two authors (72,73) claimed that purifications of solution media completely eliminates radiocolloid formation. Many others simply stated that purification reduced radiocolloidal aggregation (47,48,58,59). 2. Assuming that Bi in tracer quantities can act as an anion or a cation, Werner (59,60) showed that its behavior under the influence of acids, bases, or salts is as would be predicted on the basis of adsorption on impurities.…”

“…Many others simply stated that purification reduced radiocolloidal aggregation (47,48,58,59). 2. Assuming that Bi in tracer quantities can act as an anion or a cation, Werner (59,60) showed that its behavior under the influence of acids, bases, or salts is as would be predicted on the basis of adsorption on impurities. Haissinsky (5,69) criticized this work on the basis of his investigations with macroscopic amounts of Bi and the researches of Paneth and Benjamin on the bismuth anion (74), which Haissinsky stated could not exist under Werner's experimental conditions.…”