slope of the linear regression was 0.964,
or dark muscle tissue
can be used for
Hence,
either liver
Co determinations with
essentially the same results.
DISCUSSION AND CONCLUSTONS
It is evident that species such as big eye, blue fin and
yellowfin tuna, which migrate througn large areas of the Pacific,
are poor indicators of the geographical distribution of radionuclides in the Pacific.
On the other hand,
Fe from wide areas,
good integrators of
they are probably
and they contain both
Fe and higher specific activities
greater concentrations of
then species that have been successfully used to demonstrate
differences in
hemisphere,
55
Fe
in
cod
latitudes
Preston
(1970)
from northern
(45°-52°N)
Fe content of fish from the northern
found hicher specific activities of
latitu aes
(65°-78°N)
of the Atlantic in 1967,
The highest value found in cod was 220.8 pCi
than
1968,
55
in the middle
and 1969.
Fe/mg Fe at Iceland
in 1969 and the average level in the liver of tuna from 11°N in
S was
during
5
1360 pCi
Fe/mg Fe.
Maximum levels in tuna caught
1967 and 1968 exceeded 8000 pCi
5
Fe
Fe/mg ery, but the
levels in most tuna during that pericd wrere less than 2000 pCi
bh
> Be /mg Fe.
or
of.
5S
BE
to 1964,
ak
Fe levels in Pacific saimon
acprorimately 5000 pci
5
(Udcnnings,
Fef/mg Fe.
1968),
the peak year
gives values
This value is approximately
PoE ARCHIVES