:
et
;
araii
alDt
Seie
Pres
cas «3E
ii
sy
.
2
gdh!
ero,
.
fot
4
ae
’
Se deVotes
niall
BAeety SuiViol ek ode
:
oa
Poe
x
d
~34mi *
he X the values for the water samples expressed in d/m/
7
counting error are given.
ing, i.e., none
“mole water" samples were used for count
removed,
Fhe natural-occurring radioisotopes were chemically
total radio~
the values in the above table are those for
b evity.
Por ocean waters,
the atomic disintegrations per
other
hute per kilogram for potassium-40 are 560 and for all
bural-oceurring isotopes about 10.” This means that the conA bution of natural-occurring isotopes to the values in Appen-
Table X for lagoon water samples ranged from 0.6 to 1.2
:
fm/ml.
Because of the relatively great counting error of the lagoon
‘ter samples neither the rate of decline nor the decay rate was
timated.
A conservative approximation of the radioactivity
, the lagoon water, based upon the average difference between
; observed value and the positive 0.95 counting error for
@ January 26-30, 1955 samples, 1s 2400 d/m/1 (.0011 uc/1).
/
Por the fresh-water samples the counting data are more
Liable (Appendix Table X).
The samples include cistern water,
B tered well water, standing water and ground water.
The stand-
f water was taken from an open can on Eniaetok Island and the
punc water from a two-foot hole that was dug on Kabelle Island.
) ground water was most radtoactive, 48,000 d/m/l (.022 ue per
per) and may have contained radioisotopes that had leached
pm
the soil,
However, the decay rate r =
t72-35 for the pertod
March 23 - July 30, 1955, was similar to that for mixed
hubert, J., "Radioactive Poiso ns "
ntific
Fol. 193, Wo. 2, pp. 34-39, August 195Scie
5.
2y
eet
American