rz
BULGE” ans 2ESCRTENG TOCE
‘Marshall Islands Radiological
,
HATI2-91-32
TATE 28EPARED
(43 /31/8
Safary Proeraq
CONTRACTOR NAME
Associated Universines, inc.
2.
woee
3Ni
Setail Attacnmments.
WP NUMBER
.
TASK NO.
ey
NC.
9
cont.
Tachnical 2reegrass in FY 1980.
(+
tantly being speccromettically analyzed
MY analyzed for 32-90.
ta
BRE
fa
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2
Ia February 1980, a field tris was undercakan co Japtan and Enewetax Islands,
Znewectak Atoll and Ujelang Island, Ujelang Atoll to obtain baseline body~>urden
data on the Znewetax sopulacion ortor to thet tepatriation of inewecak Atoll in
April 1980.
Personnel aonttoring was acccmplished chrough whole-body counting and
collection oF one liter urine samples from ali versons five vears of age and sider.
At Yielang, nonparticipanrs in the whole-body counting program were i{avited to
vide urine samples.
Approximately 400 urine samples were collected and are
mogracnic data.
Yhnole=sedy counting
Additionally,
for gamza amitters and radischeai~
sarticisancs srovided physical and
was conductad with
two indevendent chair counting systems
fn which a “sodiua iodide detactor was vzosiztioned in frone of a satelded soerson.
Tne solid angia of the decacstor sermitted collection of shocons amictted from the
trunk of am adult body.
This geometry allowed safe antry and egrass with com
sarable sensitivity ralative to che bed zeometry used in orior field trips.
Ww eC
4
ais om Japtan, inewetak
Approximately +00 spectra were obtained irom ind q
and CUlelang islands.
These spectra were enalvzed for C 3
, and ¥=40 usin
talisration stancaras which best matched the sex, heizh t and weight of the ser
son.
aAddictional analvses were performed to derarnine = y
!
statistics for various age and sex sudgroupings of the body burdens. Quality assuranc2 was ootained through duplicate whole=sedv counts and reovecictive point
source standard counts
suring
t9 determine the orecision and
accuracy of
the systen.
the July and Auguste 1980 field cris, whole-body counts and urine
sanples wera collected ac “Majuro Atoll and Sili Island
from former 3ikini Atoll ran
g3igenzs and item a comparison sopulation. Aporoximataiy 290 spectra were obtained
anc 100 urine samples csllected.
‘Fitty sercenc sf the spectra wera from oersons
ano were residents and vhole~body counted on 3ixini Atoll in April 1990, 10 vercenct
wete Irom former 3ixial Atoll residences aot counted Seforea and the remaining
Spectra we ra ir om 4a comparison group who nad aever resided on 3ikini Atoll.
A qualitiv assurances orogram similar to that amploved at Inewetax vas usec.
Reviaw of the aistoric 3ikini whole-sedy counting data indicated no eifects 31
Qody~Surden assessnen=t due ia reconfiguration of the shialcing and detector.
Tonsecusiva aeasurements of a former 3ixini residenc’s body bSurden allowed computazion
a2 individual long-carm biological removal rate constants.
This daca along wit
tle Tethodology vere writtan up and issued in a orisary scientilic pubiication.
Ac Xili island there were former 3ixini residents whose Cs~137 body
Ze
ramained unchanged or increased.
Reasons for this auciide Seing sresent in their
nurvant diet were invescigacad.
This work showed that ihese Ssurdens were within
tar22 standard deviations of the mean Surden 37 the csusarison posulation excaot in
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