73
INTERNAL DEPOSITION OF RADUONTUCLIDES
Table 5.5.—-Rediachemes! Ansty of Urine Prom the Reagslap Poaple (45 doys post deesnstinn)
Suva srwrewrt
GQwve ww =
Aamme Na
Average
Percent of total Beta activity
on the radioactive content of various tissues.
Details of the animal study are presented in a
subsequent section.
The estimate of the mean body burden of the
Rongelap group at 82 days post detonation is
presented in Table 5.6. The body burden at one
day was calculated in the following manner.
A formula was obtained from urinary excretion
data reported by Cowan, Furnbee and Love (6)
broaecase of accidental inhalation of sr”. The
excretion curve was best repreventedl by four
exponential terms, (Very similar results were
obtained by approximating the biological decay
of strontium with a power function, based on
human excretion of the metabedically similar
element, riudimy) (6, 7,8).
Estimates were made of other radioelements
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on
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ee
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prevent in significant amounts at one day, as
shown in Table 5.6. These estimates were made
on the basis of the level of Sr* at one day, together with the data on the activity of the various fission products at this same time (9) and
animal isntope absorption and retention data
(1, ),
The LAST hax also estimated the body barden at one day, on the basis of radiochemical
analyas of pooled urine samples from a representative number of the Rongelap and Amertcangroups (10), These calculations were bared
on the analysis of Poin the early samples of
urine C14 cays post detanation) as well as the
shove mentioned physseal and biological data
on Hsien products 0105.99. Their tind sng are
presented in Table o.#,
Table 5.6.—Mean Body Burden of the Rongelap Group
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Ramorarrore
ACTIVITY
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