-2hTe fourth peak in the original elution curve occurred at
pH 4.1.
As above,the isotope comprising the peak was Mn?4,
me
total Mn°+ in elam kidney sample I amounted to 38,500 d/m,
The last peak of the original elution experiment contained
a total of only 20 c/m over background and occurred at pH 4.1,
fraction 1.
Because of the low level of activity the identity
of the isotope or isotopes comprising the fraction was not de@ermined; however, gr89,90 are known to be eluted at this position.
Sample II
Bonito liver sample II collected at Pox Island, Bikini Atoll,
September 23, 1956.
in Pig. 6.
The elution curve for this sample is shown
The anions were not identified but had maximum P
energies of .03 and .45 MEV and J
peaks of .67 and .89 MEV.
The oxalate fraction contained Fe, Fe’, and Zr?” -Nb?> ,
The activities of Pe? (488 d/m) and Zr? -Nb2> (100 d/m) were
determined from the
7
spectrum curve,
The identification of Fe? was made by mass absorption
observations.
The procedures used for oxalate fractions b and
c may be cited as examples of the method.
One-ml samples of oxalate fractions b and c, after drying
under an infrared heat lamp, yielded counts of 11,400 and 1,240
c/m respectively in the windowless methane gas-flow counter.
After the plates were flamed their counts were 29,700 and 3,510
c/m respectively.
After each plate was covered with aluminum
foil of 4.7 mg/em@ weight the observed counts were 174 and 8 c/n
respectively.
In a similar experiment with six Fe? spikes the
averages of the counts were 6,190 e/m with only carrier-free Fe->