-20more sharply defined in the separations.
of the
7
peaks attributed to Co!”
The relative heights
C028 |
and Co
60
were un-
changed (Fig. 4).
The low yield of cobalt by the
a@ -nitroso-
# -naphthol
precipitation technique is due partly to loss of cobalt on the
iron scavenge utilized in the technique and to high self-absorption in the sample’.
(2)
Separation of cobalt by the Los Alamos method (Klein-
berg, 1954).
From an original 5,330 c/m B in each of the dupli-
cate samples, totals of 4,490 and 4,730 c/m
&
were recovered
in the cobalt separations made by the Los Alamos method.
The 7
spectrum curves were essentially the same as those of the original sample and as those from the
@ -nitroso- f -naphthol co-
balt separations.
After the cobalt separations were made by the Los Alamos
method, vanadium separations (Meinke, 1949) were done.
a..12 and
.08 MEV
and in both
y
7
and an approximately one-year half life
energy and half life resembles Co!”
determine that the observed
.12 MEV
were made.
It was found thit the
separations
was not significantly
counted either for
8
or
97
In orderto
7 peak in the cobalt sepa-
rations was from Cop! and not from vio,
when
v'9 has
the vanadium separations
activity in the vanadium
greater than
.
Therefore,
background
the
.l2
Potassium cobaltinitrite precipitation and extraction of
cobalt thiocyanate complex into amyl alcohol ether, with appropriate scavenging steps. (as described in Collected Radiochemi-
cal Procedures, LA-1721)