Table 1. Summary of the volumes used and the radioisotopes eluted
from Dowex 50 resin in the primary ion-exchange separation of the isotopes in Kabelle Island soil collected July
18, 1957
Volume in
Fraction
milliliters
Isotopes eluted
Anions
490
Ry106_Rp,106
HCl wash
200
Sb 125
0.5% oxalic acid
300
Fed
8b 125, Zr95-NpH?5
5% ammonium citrate
pH 3.5
200
pH 4.1a
b
47
58
Cet44.pr 144, yin54, Cg 137. C980
d
53
Cel44_prl44. mnd4
pH 4.6
100
C137, sy90
pH 5. 1
100
gr90
pH 5.6
100
gr90
pH 6.1
100
--
Secondary Elutions
Three of the above fractions were subsequently treated by other ion-
exchange methods for more complete separation of the individual isotopes.
Rh 106
The anion fraction contained the unknown isotope as well as Ru!06In order to separate the unknown isotopes a modification of the
method of Smith and Reynolds
18
"for separating tellerium, antimony, and