tin was used.
In this procedure the sample in 0.1 M oxalic acid and
the eluting agents (see Table 2) were passed through a 0. 28 em? x 10
cm-column of anionic resin (Dowex 1 ) of 100-200 mesh ata flow rate
of 0.2 ml/min.
The fractions were collected in test tubes, and, using
a gamma spectrometer,
the total gamma activity and the specific
radionuclides then were determined.
Table 2. Summary of the eluting procedure and the radioisotopes
eluted from the Dowex 1 anion-exchange resin
Volume in
milliliters
Fraction
Sample eluate
Isotopes eluted
20
3b!25
pH 4.8 a-d
33
Sp 125
e-f
18
sp i2s
10
Sb !25
0.1 M oxalic acid
1M H)SO, a
b-f
54
sp125; Ry106_Rp106
Distilled H,O
100
--
12 M HCL
100.
Ru106_Ry 106
Resin
--
Sb }25. zr®5-Np?5
The presence of Sb}? 5 in the sample was verified by analyzing the
anion fraction with a standard radiochemical precipitation procedure.
The SbS, precipitate obtained in this separation was dried and analyzed