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.
mple Processing Procedures and Techniques
The techniques and procedures used in collecting,
storing,
breparing, and counting the Rongelap samples were similar to
bhose used in former years.
UWFL-33).
|
For complete details see WT-616
The specimens were put on ice while in the field.
Brissues were dissected, weighed and dried at the Eniwetok laborbtory.
At the University of Washington, the dried samples were
1 bshed at temperatures up to 540°C, cooled, slurried, dried, and
| then counted in an internal gas-flow counting chamber.
Counts
! per plate were converted to disintegrations per minute per gram
Gor wet tissue as of the date of collection by correcting for
| sample weight, geometry, backscatter,
self-absorption, coinct-
mdence, and decay.
7
For the summary tables as used in this report, the radtio-
activity expressed in disintegrations per minute per gram (d/m/g)
| was converted to microcuries per kilogram by
uc/kg = _d/m/g
(2.2)(10)3
adioactivity and Its Rate of Decline in Food Items
A general survey of the radioactivity of foods is given in
iTable I, with the rate of decline of these items shown in Figure
je.
It should be noted that the differences due to species and
_
“
Nevecb iological Studies at Eniwetok Before and After Mike Shot,
toe mber 1952, Lauren R. Donaldson, Applied Fisheries Laboratory,
tae rt! versity of Washington, Seattle, Washington.
3
we
e rate of decline is a phrase coined to express the combined, . ”
physical decay and the biological uptake and decay rates. a
v