brittle, and would not dissolve in the usual solvents for
millipores
suggesting possible radiation damage,
,
The ESP fared little better, some 70 ft of film at the start
of the run being permanently glued together on the reel.
Usable portions
of the film, however, showed active deposits very similar to those of
Shot 4, except that the spots were on the order of 1 or 2 mm in diame
ter ,
The active spots contained densely aggregated crystals containing Na, Ca,
and Mg. It is believed that the aerosol from this shot was identical to
that of Shot 4, with the possible exception of having a slightly higher
liquid-solid ratio,
4010205
P
State of
Activity
on Air
Filter
DMT and MP filters were also used as a source of activity for
physical state studies, MP samples were dissolved in a suitable solvent,
and thoroughly dispersed by ultrasonic agitation. The specific activity
was then determined, after which an aliquot was centrifuged* and the
specific activity of the supernatant again measured, yielding fractions
of activity associated with the insoluble residue and liquid portions,
Shot
Sample
i
(oun)
TABLE 4.1 - Physical State of Activity
Per Gent fotal Activ
Insoluble
Solvent
Weak
Acetic Acid
Willian
(DMT )
2
Water
Kingpost
Ethyl Acetate
YAG 39 (MP)
"
4
Solids \4
*
%
0
76
23
1
95
-
-
Flying bridge} Water
YaG 39 (DMT)
Deckhouse
Acetone
89
10
1
98
-
-
Flying bridge;
49
47
4
-
-
Water
YaG 40 (DMT)
Kingpost
sthyl Acetate
|
97
bed
(b)
95
YaG 39 (MP)
(a)
(b)
4
Acetone
YAG 40 (MP)
5
Tonic
0.1
Values for MP samples include colloidal.
Acetone decanted after centrifugation, water added to centrifugate
and electrodialysed.
Air-driven, capable of settling 0.01 to 0.2 py: diameter gold scl at
approximately 20,000 RPM.
92