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
Volumein
Fraction
milliliters
Isotopes eluted
Anions
490
Ru!06-Ry106
HCl wash
200
Sb 125
0. 5% oxalic acid
300
re°S
Sb 125. zr95-np?5
5% ammonium citrate
pH 3.5
200
pH 4.1 a
b
C
d
47
58
37
Cel44.pr144, yin54, C5137. c960
Cel44.prae’ Mn°4. Gg137’
53
Celtpe l44; Mn54
pH 4.6
100
Cs137, gr90
pH 5.1
100
gr290
pH 5.6
100
gr90
pH 6.1
100
--
Secondary Elutions
Three of the above fractions were subsequently treated by other ionexchange methods for more complete separation of the individual isotopes.
Rn}06.
The anion fraction contained the unknown isotope as well as Ru!06.
In order to separate the unknown isotopes a modification of the
method of Smith and Reynolds
18
for separating tellerium, antimony, and