Ion-Exchange Separation of Trace Impurities

Abstract

ments which you do determine currently by reactions other than neturon capture reactions.LEDDICOTTE.-At present, the only trace element which we determine by a reaction other than a neutron capture reaction is sulfur. In the n-p reaction, sulfur will produce phosphorus-32. This reaction allows us to achieve a greater sensitivity for sulfur since the sensitivity for the n-gamma reaction on sulfur is limited by t,he length of time necessary for irradiation (usually 2 to 3 weeks) and the fact that the radiations from sulfur-35 are quite low in energy and aren't readily detectable.

Cation-Exchange Techniques in Radiochemistry

“…Strelow and collaborators (581, 683, 684) described the use of HNO for the separation of the alkalis from alkaline earths and other elements (Mn, Ti, Fe). According to these authors the separation factor between the last eluted alkali (Cs) and the first eluted important alkaline earth element (Mg) is higher in this eluent (2,77) than in HCl (1,75).…”

Cation exchange studies of titanium(4+), vanadium(5+), iron(3+), niobium(5+), and uranyl(2+), ions in formic, oxalic, tartaric, and citric acid media

“…Fridman and Yudina (8) extracted and separated Nb1 2345 6+ and Ti4+ from oxalic acid solution using cation exchanger KY-2 in the protonated form. Similarly, lanthanides have been separated in 4.75% NH4 citrate (9, 10). Also, tartaric acid, citric acid, and formic acid ill-16) have proved to be very effective for metal ion separations.…”

Critical controlled inhalation study of pathogenesis of neodymium oxide in mice and guinea pigs

“…A recent report (Brooksbank and Leddicotte, 1953), has demonstrated by actuation analysis small amounts (average 10.3 (ig/g of bone) of rare earths in human bone.…”