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 cm” x 10
cm-column of anionic resin (Dowex 1 ) of 100-200 meshat a flow rate
of 0.2 ml/min.
The fractions were collected in test tubes, and, using
a gamma spectrometer,
the total gammaactivity and the specific
radionuclides then were determined.
Table 2. Summaryof the eluting procedure and the radioisotopes
eluted from the Dowex 1 anion-exchange resin
Volume in
milliliters
Fraction
Isotopes eluted
20
Sb 125
pH 4.8 a-d
33
§b 125
e-f
18
Sb 125
10
Sb125
54
Sb}25; Ry 106_pp 106
Sample eluate
0.1 M oxalic acid
1M H,S0, a
b-f
Distilled H,O
100
--
12 M HCl
100
Ru 106pp, 108
Resin
--
Spb 125, zr®°-Nb?°
The presence of sb }25 in the sample was verified by analyzing the
anion fraction with a standard radiochemical precipitation procedure. 1
The Sb»S3 precipitate obtained in this separation was dried and analyzed