770
MARTIN
contents data, S), indicate f, = 0.26. (N.B. If stomach-contents data
were available for Sr, one might expect to find a similar difference in
estimates of f, required to fit the observed data points.)
Figures 5 and 6 show the relatively close agreement between ob-
served average concentrations of *°Sr in rabbit bone ash and of **/I in
rabbit thyroids and the hypothetical values obtained through solution of
Eqs.
5 and 6. Because of variations within and between the different
Study areas (Groom, Penoyer, Railroad, and Currant), the parameter
values that apply to the Sedan fallout field as a whole may or may not
apply with equal accuracy to different areas withinthe fallout field. For
example, if they were based on initial '*4I concentrations in plant samples, estimates of '*‘I concentrations in thyroids, A:, would be higher
than those observed in the Groom and Currant study areas but lower
than those observed in the Penoyer and Railroad valleys. However, the
disparities between hypothetical and observed **Sr concentrations in
the bone ash of rabbits from different parts of the Sedan fallout field,
based on Ry rather than physiography, are generally less than the
standard errors of the observed means.'?
104
Pt
Ed
Oo OBSERVED MEANS (n= 20)
—
bend HYPOTHETICAL MEANS BASED ON
7
P, =1800 PC/G
Tp= 18 DAYS
|
Wo= 100 G/DAY
Th= 20 DAYS
Wh= 50 G PER RABBIT (EQUATION 5)
a
f= 0.0575
x
7
—
—ainind
an
4
ul
z
0
= 108
9)
—
/—
>
_
|
=
—
_|
Fig. 3—Observed and hy-
=
_|
—
4
—
—+
ash of rabbits collected
from representative loca-
i
4
_
oF
Se
U
oe
10
Pot tf
QO
5
15
pet
tt
30
DAYS AFTER DETONATION
60
pothetical average concen-
trations of Sr in the bone
tions (see Fig. 2) in the
Sedanfalloutsieldat various
tines after the detonation.