A

general-purpose

reduction

of

long-lived

all

nuclear

computer

generated

program,

spectra.

explosion

GAMANAL,

The

products,

was

program

activation

used

for

searches

a

products,

the

data

library

and

of

naturally

occurring radionuclides to identify radionuclides from any observed photopeak
in the gamma

spectra.

It

also generates

an

upper

limit

amount, of specific

radionuclides based on those spectra regions where signals would be seen if the
radionuclides were present

in detectable quantities.

For example,

listed

in

Table 37 are the detection limit values for various radionuclides based on the
average weight of marine tissue shown for a counting period

an average-size fish bone sample,

of

1000 min.

13765 would not have been detected by gamma

spectrometry if the concentration was less than 11 pCi/kg dry weight.
complete description of the gamma equipment used,
detection,
Ref. 5.

uncertainties,

and

For

methods

for

calibration,

setting

upper

A more

sensitivity of

limits

is

given

in

The total gamma~spectroscopy analyses are summarized in Table 38.

Wet

chemistry analyses

performed

by

standard methodology are

according to radionuclide and atoll or island in Table 39.

The

summarized

total

26,018

analyses, both gamma spectroscopy and wet chemistry, are summarized in Table 40
according to radionuclide and atoll or island.
DISCUSSION

It has taken a considerable effort to process and analyze the thousands of
samples collected during the

3-mo survey.

The

12 mo and was completed in December of 1979.
control

program has been underway

since

processing alone

took a

full

A vigorous analytical and quality

June

of

1979.

The

final

analytical

results were completed in July of 1981.
The data bank resulting from the analyses of these
basis

for

estimating

inhabitants

of

the

the atolls.

radiological
The

doses

for

assessments might

samples provides

inhabitants
also

or

indicate

the

potential

areas where

more data (and therefore samples) are required to fill a gap that occurred in
the survey sample collection or to refine a critical assessment.
ACKNOWLEDGMENTS

The

DOE-supported

Northern

Marshall

Islands

accomplished through the efforts of a great many people.

15

survey

of

1978

was

Select target paragraph3