.
is 0.29.
.
.
.
.
137
oe
Equation two was used to estimate
the mean adulz femaie
“"‘Cs s0dy
burden as of 1 September 1977.
This value (1.13 uCi) was then multiplied by the
:
say
.
137
.
human milk to body burden conversion factor for
Cs and the average daily con.
;
;
137
;
sumption rate of human milk to calculate the mean iatant
Cs ingestion rate.
.
137
.
.
.
¢
A comparison of the mean
Cs daily ingestion rates for adult males, adult females and infants on April 25, 1978 and September 1, 1977 is shown in Table 4.
The
137
.
.
.
.
.
Cs bSody burden at any point in time and number of disintegrations
occurring during the uptake interval can be determined from the following equa-~
tions (Le 80):
fe
i
~(A+%
-(A+K.
.
“Cnet
CAtK ty
q * nP°EL(Z, ws om *KE) tg ( *ET) )ya0(s, Kite
(3)
(3)
and
.
“CA+K)
“(K. +A) t
p= 32°
(2, i Ki-K.
od
(oi Kerker
Orke
1
(Ko+A)(K. +A)
X!
.
. “C\+K.)t
L
, q 92 a 13K
(l-e
iv)
))
(4)
,y
where ¢
os
time post onset of uptake, days,
\X
#
instantaneous fraction of atoms decaying per unit cime, day ’
P
=
initial atom ingestion rate, atoms day ;
K.
=
instantaneous fraction of atoms removed from compartment i by
physiological mechanisms, day ’