81
TABLE N.7
#4
PLUTONIUM-239:
It
over
is
FRACTION OF ORAL DAILY INTAKE EXCRETED IN URINE ~i~i
assumed
that
the daily
the period
specified.
1
3.62
X
10-5
5
6.2
x
10-5
10
8.61
x
10-5
20
1.31
x
29
1.67
X
table’s
data
Laboratory.
is
constant
= .001.
?fOss
(new)
Jones
(old)
Elapsed
interval
(years)
~1
The
National
intake
FI
were supplied
I have used
5.42
X
10-5
1.71
x
10-4
10-4
2.3
x
10-4
10-4
2.92
X
10-4
.-
by Dr. E. T. Lessard
of the Brookhaven
the Moss factors
(Moss,
1988).
bl
The intake
can be calculated
by dividing
factors
given.
For example,
after
20 years
excretion
is found
to be 3 x 10-5 picocuries.
(3 x 10-8)/
2.3 x 10-4 = .13 picocuries/day.
the urinary
excretion
of intake,
the daily
Then the intake
is:
by
the