Sq)
Fontrowing A NUCLEAR dete
Introduccion
ation ai he spring
~
sublethal external gamma
iiat ono xposure
and beta irradiation fo toe -kia. delectal »
amounts of radionue ides
ere
tepasited
1
ternally.
It has beer assa ee cunt 2 los ti
ations resulting from) contami ngeevertet
ratio of external to a terus
tose voided Je ee
eeedingly high.
the
internal
Hovever,
contami matic
dete led study
f
Pb >A DOSE
human populat.on ant oto: chines was cede
determine the kind am
teeres of omrern |
deposition, Tliree generui protdems ‘sere 1
vestigated: (1) The « eterr mateo of the cor
tribution of the interii tip oation te Chie
acute vadiation synd ome observed
24 Poe
possibility of Jong term efecs
one
3
Poe
qualitative and quantitative Gature ot thes
ternal contamination prod
ea ts exposure
individuals to mixed fis-ic
Dew
was NO previous situation
f
There
Wats,
- pea brant bee
ings were exposed fooathoeP
roripent
1 ontani
nated with mixed fissile oroduets.
Cloned
rent studies were undertaker oo he. ip iness,
however, on radioact ve ou teal teste. 4
small group of Japanese sterner near Ronee
lap at the time of the deten tier. ere exposert
The report of the exter ye
iwestegations
undertaken on the asnes The Papanese cri. e
been published (4)
Evaluation of the ytern, core uminatiar
Ff
the human beings wa crack fx pastiche et toe
radioelements excrete |
mation
is presently
\
ery
isn deo
atthe
fe
6 ceert ong toe
ratio of excreted rad oelem en shi ummouet
deposited in the body
ft 4
<
iecessurs te
the evaltation on data eat
ined from
whieh
aren
event.
had
been
cortunmys
Detagled -tuce.
ct
7
base
vrei <
the
snap
putea foesnes ard
animal exereta foen
oresd ee
estimates of the foam
ce
vain oor
vba gy
ee te
General Nature of Internal
+
of 1954. a large group oof peapie were oonfan
nated with fission product
bo oatdit or tea
Radiation Toxicity
Poa Nett awk OF the radiation hazard from inrere tis deposited fissron products can best be
bet rstood in rermns of the biophesreal behavior
fry ytronte hes,
Posse oroduers enterme the body through
Pp
Tyee
Pthrod
te
oor
meestion conmeentrate
on Vitrlous
as sourees Gf internal radiation.
ut abo
Porch Loy of a mehonucide to enter the blood
“teen, s detectiined bx its sotubility, chemical
Proareroes
and
myes os
Ha.
tive oa dimuited solubiltty on body
othas basis, oniy a few of the radio-
bal
puysieal stare.
“Phe radioele-
Formed oi tsston are predominantly oxob
bo
elements oun become available to the body.
lta
He ouneant wach can produce im-
BY
booms eddeets whe: deposited within the body
trate beenuse of the close proximity of the
feote pe foe
tie tissues it ceradiates, and because
‘Le
sorope continues to irradiate these tissues
sat
"as remeved by bielogieal turnover or is
retpered barpiless by radioactive decay.
ete 6
cot
The
adation from internuly deposited
Pho
tee
4 @ the -me as those from external
hob oa
Toe cistineiishing feature of inhora
nlite be wever. ists long continuing
Peyeconae
Peo
ove
Setopes
!
p poresses
we ne
follow
the same me-
oa the bods as the naturally
native satopes of the same element
'
oc oenaeally stmiar elements. Thus
Trout
thy
viet bariam. whieh are analogous
Pero adiy to cate nm, are deposited in the ealrey
" pour ~neof the bone. Although nearly two
as
moat
dieisotapes ure produced im the fs-
"OM Bes,
thor
mds
1
few
mre
ta aon aazards.
Pooh
potential
ehronic
These fission prod-
apes sted in Table 3.1, constitute a
eon oer tase od the Lssion vield. and localize
:
ape
Vhe
hone seekers” have.
67
i