RAPID CONCENTRATING OF RADIOSTRONTIUM FROM MODEL FALLOUT, DRINKING AND TECHNOLOGICAL WATER, USING SOLVENT-EXTRACTION WITH COBALT DICARBOLLIDE AND SLOVAFOL 909
M. Kyrs et P. Selucky, RAPID CONCENTRATING OF RADIOSTRONTIUM FROM MODEL FALLOUT, DRINKING AND TECHNOLOGICAL WATER, USING SOLVENT-EXTRACTION WITH COBALT DICARBOLLIDE AND SLOVAFOL 909, Journal of radioanalytical and nuclear chemistry, 172(2), 1993, pp. 213-221
The optimum concentration of the extractants for rapid radiostrontium
concentration is 0.1M HB (chlorinated cobalt dicarbollide acid) and 1.
5% vol. of Slovafol 909 in a mixture of CCl4(40%) and nitrobenzene. Th
e recommended initial carrier concentration is 2 . 10(-4) M Sr initial
aq. pH approximately 4.3, time of shaking 3 min. Yield in the range 8
0-97% can be achieved in rapidly concentrating Sr from 1 dm3 aqueous p
hase into 10-20 ml of the extract. The yield decreases with increasing
Ca concentration in the model water. The time needed for the concentr
ating does not exceed 30 min.