“TLE
SLOG” ant FESCRUNG IITs
Marshall Islands Radiological
TATE AGESaReEz
RATT I-AD LAT
Q3;72,31
Salzacyv Ir3eran
ZTONTRACTOR NAME
Zaft:
Associcted Universines, ‘ne.
vetarl Attacnments.
��,
Tachnical Proereass.
Technical 2
"4
oO
iQ
3.
AE NUMBER
"ASK NO.
284
3NL
NC
3
cone.
rass in FY 1980,
ta February 1980, a field trio was undertaxan 29 Japtan and Enewetak Islands,
Emewetak Atoll and Ujelang island, Uijelang Atosii ts obtain baseline bodv-3urden
data on the Znewetax sopulation ortor to chet rasatriation of Einewecak Atoil in
ApTiL 1920.
Pacsonnel sonitariag was accomplished
snrough whole-dody counting and
ves
*o4.ecilsn oi sne Litar urine samples irom ali versons five vears of age and old
‘elang,
»
+
-
~
nomrarcticipants in the wholewSedy counting program were favited
da
soewan
ally analvzad far 32-90.
amogrtaonic dara
.
to
urine samples.
Aporoximataly 400 urine samples were collected and are
*
ay 3eing speccrometricalliy analvyzedq for gamma anitters and vradiocheai-
ta (+
orovicte @
addistionallv,
tartiziztaats
sravided paysical and
nting was conducted with two indasendenc chair councing svstens
acide datectar was nvositioned in front of a snlelded person.
The solid angle of the decector sersisted collection oF shotons amitted from fhe
ttunkx of an adult body »
This geometry allswed safe anezy and agrass with com
tartabie sansicivicy ra lative to che ded zeometry used in prior Iiald trios.
Aporoxiaately 1:00 spectra were obtained from individuals on Japtan, inewecak
nd Uielang Islands.
These spectra were anaivzad for Cg-i37 and 4-40 usin
calibration standards which best matched
the sex, neisht and weight of
the ser
son.
aAddisional analyses were veriormed to detammine the iraquency distribution
scacistics for various ag@ and sex sudgroupings of the Sody burdens. Quality assurance was odtained through duslicate whole-sedv counts and renecitive point
source Standard counts to determine the srecision and accuracy of the systen.
During the July and Auguste 1980 field sris, whole=Sody counts and urin
anoles were collected at ‘fajuro Atoll and Sili Isiand from former 3ikiat Atsli ren
sidencs and from a comparison sopulacion.
aAporoxizataly i200 svectra were obcained
and 100 urine samples collected.
fitty sercenc sf che snectra vera from oersons
dno were residents and whole-bod7 counted oan 3i%ini Atoll in April 1980, 10 sercenc
were from former 3ikiai Atoll residents noc counted DSefore and the remaining
soectra were from a comparison group who wad never resided on 3ixtai Atoli.
A qualicy assurance srogram sintiar to inact tape syed at Inewetax vas usec.
Review of the aistoric 3Lxini whole-s0dy sounting data indicated no aifacts 32
sody~surden assassaenc due <5 reconfiguration of ine shielding and decactor.
7: =o
secucive teasuramencs of a former 3ixini resident's Sodv Surdéen allowed computa: fan
a2 individual long-carmm Siolagical removal tate constants. This daca aiong wich
the techodology ‘were written up and issued in a orisary scientilic pudiicacion.
Z
sland there were former 3izini residents whose Cs-i37 ody
c
Tamained ne ese or increased.
Reasons iar rnis nuclide Seing aresen=t in =
va inveszizacad.
This work showed chat these durdens vere vit
daviations of the tean Surdan of ine somstarison sooulation exc