1m
tis ues gives essentially the same results.
However,
greater
:
55
.
.
.
concentrations of
Fe in the dark muscle and liver tissues than
.
‘
.
:
55
in light muscle make the former tissues more desirable for
Fe
:
analysis.
55
.
.
.
The °°? Fe concentrations in dark muscle and liver from
Single fish are approximately the same.
+
The average
137
t
3-4
+
;
Cs concentration
in
the light
muscle ofo£ tuna
caught north of the equator was 0.15 pci/g dry, with a range from
.
background to 0.43 pci/g.
.
tendency for lower
137
.
As with
5
c
"Fe,
,
Cs concentrations
background to 0.27 pcCi/g)
there
appeared to be a
;
(0.065 pci/g,
range,
in fish caught south of the equator,
but the differences were not statistically significant.
The tuna
caught near Bikini Atoll contained almost the same average
concentration
(0.16 pci/g,
range,
137
Cs
background to 0.31 pci/g as
other tuna caught north of the equator,
Cobalt-—60 wss not found in light or dark muscle samples of
tuna from the Japanese fishery.
The limit of detectability with
the method used was estimated to be approximately 0.07 pCi/g
dry weight.
The yellowfin tuna caught off Bikini all. contained
small, but measurable,
liver tissues.
amounts of C86 in the dark muscle and
The average value for dark muscle was 1.0 pci/g
dry, with a range cf 0.08 to 4.6 pCi/s,
a range of 0.21
66
Co
to 5.6 pCci/g.
.
concentration
:
in
and for liver,
1.3, with
The correlation coefficient for
dark muscle
anc
:
liver was
0.966
a
and the
- paReTIT