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The Natural Contents of RaD (Pb°"") ahd RaF (Po
.
NOV
|
210
) in the Human Body*
Richard B. Holtzman
Radiological Physics Division
Argonne National Laboratory
Argonne, Illinois
Hp. J] al 9]
Ang Ate
I. Introductioa
In order to assess the dose aus to the natural radiation in ASTER
the human environment, the internal radioactivity of the body must
be determined along with that of the external radiation.
Much effort
has been expended in actvermsnetion of tre artificial background from
|
bomb fallout. whereas wn 2 much smaller scale this has been dene on
1k
many of the naturally occurring radionuclises, such as C, K
“2,
fy.i'
and Ree
226 (1.
50
Ra
226
ath acccunts for little of the dose, .lthough because
of {t§ lovation fm che cell nucleus, it cay oc quite impsrtan;.
ne)
K',
on the othée mand, eccounts fo. an appreciable fraction or the internal
abscrbed 2.3. im the voay, (*) but its biological imzwé_tance is
congldevably reduced if an cx
tated «2m .2 & for alpha particles is
|
assumed.
One purpose of these studies {fs to lccubs Letge hucen population
groups which are identical to other ;rowps, excent for differences in
exposure to natural radiaticr.
Thus, there is the possibility cf
Studying low-level radiation effects on humans.
Natural radiation is
|
ef pari.cuiar iaterest because it may allow the discovery of very large
populetlens ‘that is, 100,000 or more} which Maye experienced known and
constant kffetime exposures.
*
Such groups have teen found in certein
Work performed under the auspices of the U.S. Atomic Energy
Coumi ssion.
UNCLASSIFIED
RELEASE AUTHORIZED BY
UNCLASSIFIED AREAS COMMITTEE
ARGONNE NATIONAL LABORATORY
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