Isolation of radioactive strontium from natural samples: separation of strontium from alkaline and alkaline earth elements by means of mixed solvent anion exchange

Isolation of radioactive strontium from natural samples: A semi-automatic procedure

“…It was also shown that the intensity of strontium adsorption is affected by the nitrate concentration, strontium concentration, pH and the alcohol used. 25 The quantity of adsorbed strontium and of other cations increases with an increase of the concentration of cations in alcohol solution up to a certain level. With an increase of concentration, the quantity of adsorbed strontium increases as well (Table 1), this increase is almost linear in the concentration area of 80-200 mg'1-1.…”

“…25 This means that during strontium adsorption, the flowrate must be selected according to the exchanger column height. In the separation of strontium from other cations it was shown that the linear flow-rate up to 3.25 cm.min -1 does not affect the successful separation of calcium from strontium and yttrium.…”

Facile Synthesis of Fe3O4-N-[(3-Trimethoxysilyl)propyl]ethylenediamine Triacetic-acid Trisodium Salt and Adsorption of Sr 2+

“…So nuclear waste contains lots of 90 Sr. 90 Sr could launch β rays, and its half-life reaches 28.6 years [2,3]. 90 Sr with its long half-life is considered to be the critical isotope tend to be strongly retained within the living organisms such as bones [4].…”

“…Adsorption has become one of the most commonly used separation methods due to its simplicity, selectivity and efficiency [12,13]. However, many other interfering elements in the nuclear waste such as 137 Cs and 40 K are also problems [3]. Further, concentration of Sr is unusually enriched in oil-field brines of Qaidam Basin, China and have excellent potential for development and utilization in future [14].…”

“…A problem arose when separates strontium from oil-field brines. A number of interfering elements such as sodium, potassium and magnesium, especially calcium, due to their similar chemical behavior, affect the separation of strontium seriously [3].…”