Table 5.

Summary of wet-chemistry analyses.

Sample type

Number of samples

Bikini soil

346°

Nuclides analyzed

re (10), 295) (al1), 7 >8pu (30),

2395240, (ain), **tpu (259), 74 am (47).
?

Enéu soil

é

122°

905. (all), 239,240, (all),

241o (56),

24 (15).

Bikini vegetation

96

re (4), Oni (4), 728r (ali), 243m (4),
239,240, (273), 74pu (15), 78tam (20).

Eneu vegetation

31

06, (all), 239,240, (all),

24]an (2).

Bikini animal

10

re (2), O3N4 (2), 90. (all), Iolo (2),

239,240... (aii), 74 sm (3).
a

.

Total includes 13 samples where duplicate soil samples were analyzed.

Total includes 4 samples where duplicate soil samples were analyzed.

was used to determine the

241
4 Am

and toden concentrations.

For

Iron-55 was isolated by passing
the working solution, containing

coralline soil and animal tissue,

iron carrier, through a Dowex 1-X8

these aliquots were nominally 5 g.

anion column (NO, form), precipitation

A smaller aliquot of approximately

of Fe(OH) , with NH, OH, adsorption

3 g was taken from vegetation samples.

and elution from a Dowex 1-X8 column

In all cases, samples were ashed at

(Cl form), and final mounting by

950°C for 8h as the initial step

electrodeposition.

in the chemical dissolution.

aliquot of each sample was ashed

The

A separate

MCL chemistry scheme for the deter-

and dissolved for elemental analysis

mination of

of iron by atomic absorption

Oy and Pu from coralline

soils, vegetation, and animal tissue

spectroscopy.

is outlined in Table 6.

required to provide corrections to
~10-

9010052
peer:

Paes nemap esata 202 rtd

:

These analyses were

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