UNCLASSIFIED
28.
29.
Mew carry out a final 75% HNO, separation in the 20 ml
beaker. (100 ml volume)
Filter through a fluorothene funnel on a glass fibre filt
Transfer the funnel to a clean filter flask and wash out
acid with anhydrous ethyl ether.
Thais method was selected initially to be certain of obtai ning
strontium regardless of its state.
However, testa of leaching
nethods showed good recoveries, and they are to be preferred far
handling large samples of soil. The following data gives ac
ison of results by different nethods.
Sample Ko.
Source
112
_l
Albany, B.Y.
14
_
98
Methods
Method (d/2/
0.1490.08
2.
0.1190.007
0.920.006
Logan, Utah
0.1690.05 0.012%0.002
-
Lamont Labs.
0850.04
-
.08D.0h
*
1.
Complete solution as described.
2.
Leaching 10 minutes with 6 N HCl.
3. Lesching 10 minutes with 1 N Ammonium Acetate.
The properties and abundance of the long-lived fission products
given in the section on bone analysis. The effect of additiog
following mixture of possible interferences in the analysis
gram soil samples is given in Table A-7.
were
of the
190
batts GO
UNCLASSIFIED
00131986 052
en
105108!