Jj. J. KORANDA
2
Laboratory of Radiation Biology, supplied the
algae samples.
delta YC
,
ita
pos
com
Bisdlea
rips may
rbonatey
mments,
the loose
ts which
Sanildefonso Is.
* tritium
sore carbon
ugh the
Halimeda opuntia,
Igurin Is.
indicate,
Coulerpa serrulata,
tlevated,
Igurin Is.
C source
* enriched
and the
‘alue less
sas suspected and since the rainwater tritium
aental water tritium base line, the sample was
cectrolytically enriched 100-fold. This analysis
velded a value of 27 + 3 Tritium Units. Soil
ad plant loose-water tridum contents may
for the
include
rld’s at.
ss. Fer-
erefore be compared with this base value.
In summary, the results of this preliminary
vey of detonation environments in the
Pacific Proving Grounds indicate that residual
suum and Care present in relatively high
--xcentrations in soil materials of the detonation
wc up to 12 yr after the event. Exchange of
2 surface
der cent
alifornia
Che low
age, but
may be
‘erefore,
.bound tritium with the available soil water
nyplace
ig in the
in the
ie data,
physio-
absorb
‘oots, oF
nediate
's in the
d) was
ye alva
iples of
end of
ent and
a. Dr.
rington
om
values,
ugh the
2523
wel will theoretically represent the environ-
SHI and
‘aulow'nia
Mm entry
3244
The Eniwetok Island rainwater sample col‘ected in August 1964 is listed in Table 5 as
ontaining 86 + 3 Tritium Units. This value
*xpected
itter are
1430 + 26
ics place at a slow butsignificant rate, and
vum is detectable in plants growing in the
stonation environments. Carbon-14 is also
cevated in the terrestrial plants. The basis for
eclevated #C is not implicit in these prelimisuy data. Tritium and !C are also present in
‘evated concentrations in marine organisms.
+ wever, because of the high rate of exchange of
:¢ lagoon waters with the open sea, these
“evated concentrations are highly localized in
2e vicinity of the detonation site (Mike Crater
rea).
1457
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Yo