Table 234,

Radionuclide concentrations in fish (January 1972).

Nuclide

Sample

13765

All fish?

600,
0c,

No, of Samples

Average

High

128

0, 39
2,0
0, 16

6.8

38
1.5

0, 026

Eviscerated
whole fish

74

0, 21

7o-

“<7

Fish muscle

51

0.075

---

“--

All fish?
All fish?

905.
905.

Concentration, pCi/g dry weight

128
125

only

Low

0, 041
0. 0010

4 All fish includes eviscerated whole fish and those fish where muscle was

separated from bone and only the muscle was analyzed,

weight for use in the dose code by dividing

to g/day of fresh food.

The g/day intakes

by 3.5, the average wet-to-dry ratio for

listed for coconut and arrowroot refer

fish from the Atoll.

to the dry weight intake of coconut meat

Integral doses calculated from the

(copra) and processed arrowroot starch.

marine survey data are listed in Table

Inferred initial ingestion rates assuming

235 for the whole body and bone for 5,

the diet at time of return are shown in

10, 30 and 70 yr.

Table 236.

The major contribution

This diet contains only foods

to the whole-body dose comes from 1ST a.

that are available on islands of the group

and 60 Go, while the bone dose comes

at the time of return,

from 906. as well as from 13765 and

meat, birds, bird eggs,

80 Go,

and,

The third line of the table gives

the summation of the dose to each organ
from the three isotopes.

i.e.,

domestic

coconut crabs,

in the case of the southern islands,

coconut meat and coconut milk.

The bottom entry

The 30- and 70-yr integral doses were

in the table lists the dose from all radio-

calculated assuming the 10-yr post-

nuclides listed in the Table 235 footnote. |

return diet.

In addition to the foods that

are available at the time of return, the
10-yr post-return diet includes pandanus

Die rrestrial food chain

Evaluation of the potential dose to the

fruit, breadfruit,

arrowroot,

coconut

returning population via the terrestrial

meat,

food chain has been structured on the

The initial rates of ingestion for each

basis of the living patterns in Table 225,

island group assuming the 10-yr post-

and coconut milk for all islands.

The quantity of radionuclides ingested via

return diet are listed in Table 237.

terrestrial foods was computed from the

values are presented in two parts; the rates

measured and predicted concentration of

of ingestion for the foods immediately

activities according to the expected daily

available are presented on the left side of

diets listed in Table 227,

Table 237 under January 1, 1974, while

Except for

These

coconut and arrowroot, the daily intake

the rates of ingestion for the foods that

of the food items listed in this table refers

are to become available 8 yr after return

I[-47

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