“5 8 pemeres ef
79
INTERNA] DEPOSITION OF RADIONUCLIDES
riod. Radicanalysis of the excreta was performed in the sume manner as that of the tissue
samples, described above.
5.42
detonation was about 4 uc. The distribution
of activity in the individual issues is shown in
Table 5.8. Over 90 percent of the beta activity
wis localized in the skeleton. The highest activity in a soft tissue was found in the liver,
which had, however, less than 0.5 percent of the
total body burden. ‘The colon contents had the
second highest activity for the soft Uissnes. about
Findings and Interpretation
Gross Observations, The animals had been
free on the islands. Although malnourished,
0.24 percent of the total. The alveolar tissue
they showed no other evidence of disease.
of the hing had an activity less than Q.0y percent of the total activity in the body.
Grogs beta and gamma activity of the chickens at T4 days post detonation was approntmately 0.2 ye. ‘The wros3 activity per body
weight of the chicken is appronimately the same
as that of the pie. The distribution of activity
Autopsy of tvo chickens which died during
shipment revealed no pathological findings that
coukl be associated with radiation.
On the basis of an assumed 12-houreffective
fallout time, the animals from Rongelap received an integrated external duse of 280 to
860 1, depending on the date of their collection
(see Table 5.7). The pigs from Utirik received
a calculated dose of 32 r at the time of their
evacnition. The annals all showed extensive
external contamination, ranging from 0.5 to
Samy per hour xt 30 days post detonation. This
acuivity was reduced about 73 percent by a
in the tissues of the chicken (Tuble 3.0) was
very similar to that inthe pig. Most respiratory
radio activity was localized in the turbinates,
asa result of entrapment of the large particles,
which could not penetrate to the alveolar tissue.
The beta activity in the skeleton of chickens
at 160 days dropped to 4 percent of the value at
24 days post detonation, while in the same period the gammaactivity dropped to 0.2 percent
washing with water alone.
Radionctivity of Tissues and Earcreta, The
wvoss beta activity of the pigs at $2 days post
Table 5.9.—Beta and Gamma Activity of Chickens From Rongelap (ye x 10")
‘
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Dav or DeatH’'....i
Day axatyzents....'
Tistve
Hex
|
tes 92
Dave
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Day 24
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Day 33
|
Davo
Tibia... ole. cle eee.
760 BBN
Skeleton ........eeees 11030 s3en0
Liver... ccce eee eee
119
21
Gizzard..... 2.2... eee J
Gizzard (content)...
CrOPe. ccc ccccceecee|
(CL)
|
Bera Gawsas Beta Gamnay
i ee Erree |
Intestine
—
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ceeceencecee
Day oy
BETA
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332.0271
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Dav 140}
Day ate
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Davin
Dav 122
Bera Gansta Beta Gasesta
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Ban
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COTLEMIS. 0.0 ceca eee}
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0.16
asesveeecees
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Trachea............. es
Turbinates.....0....-[
ccceeeeeeeee
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"Tay post detonation.
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Spleen oocccccecccccet cccecccceeee
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