Dust concentrations of 21
study of personal inhalation exposure.
.mu..g m/sup -3/ and sea spray of 34 ..mu..g m/sup -3/ were the
background throughout the Bikini Island except within 50 m of the
windward beach. Background concentrations of /sup 239 +240/Pu were 60
aCi m/sup -3/ in the coconut grove and 264 aCi m/sup -3/ over
rain-stabilized bare soil. The ratio of plutonium activity in’ aerosols
relative to the activity in underlying soil, defined as the enhancement
factor, EF, was typically less than one. Enhancement factors increased
about 3.8 as a result of tilling. Plutonium resuspension flux was
estimated at 0.49 pCi m/sup -2/ year/sup -1/ over most of Bikini
Island. Aerosol size distributions associated with mass and with
plutonium activity were typically log-normal with median aerodynamic
diameter 2.44 ..mu..m, which decreased to 2.0 ..mu..m above freshly
tilled soil. The Pu concentration in aerosols collected over disturbed
soil increased by a factor of 19.1. Vehicular traffic produced dust
pulses typically of 10 s duration,
concentration,
28
..mu..g m/sup -3/ average
and plutonium enhancement
factor 2.5.
Personal dosimetry
showed that enhancement of dust by a worker was a factor of 2.64 for
heavy work outdoors and 1.86 for light work in and around houses.
Pulmonary deposition of plutonium was calculated for various exposure
conditions. The pulmonary deposition ranged from 1476 aCi h/sup -1/ to
12 aCi h/sup -1/ with intermediate values for heavy outdoor work and
for light work in and around houses. ;
Major Descriptors: *LUNGS -- RADIATION DOSES; *PLUTONIUM 239 -- PARTICLE
RESUSPENSION;
RADIOACTIVITY
*PLUTONIUM 240
-- PARTICLE RESUSPENSION;
*SOILS
--
Descriptors: BIKINI; DEPOSITION; DUSTS; EXPERIMENTAL DATA; INHALATION;
ISOLATED VALUES; MAN; RADIOACTIVE AEROSOLS
Broader Terms: ACTINIDE ISOTOPES; ACTINIDE NUCLEI; AEROSOLS; ALPHA DECAY
RADIOISOTOPES; ANIMALS; BODY; COLLOIDS; DATA; DATA FORMS; DISPERSIONS;
DOSES; EVEN-EVEN NUCLEI; EVEN-ODD NUCLEI; HEAVY NUCLEI; INFORMATION;
INTAKE; ISLANDS; ISOTOPES; MAMMALS; MARSHALL ISLANDS; MICRONESIA;
NUCLEI; NUMERICAL DATA; OCEANIA; ORGANS; PLUTONIUM ISOTOPES; PRIMATES;
RADIOISOTOPES; RESPIRATORY SYSTEM; SOLS; VERTEBRATES; YEARS LIVING
RADIOISOTOPES
Subject Categories:
510301*
-- Environment,
Materials Monitoring & Transport
--
Soil
Terrestrial -- Radioactive
--
(-1987)
560171
-- Radiation Effects -- Nuclide Kinetics & Toxicology -- Man --~
560161
500300
-- Radionuclide Effects, Kinetics, & Toxicology -- Man
-- Environment, Atmospheric -- Radioactive Materials Monitoring
&
Transport
--
(-1989)
INIS Subject Categories: B31*
C21
--
-- Land
Tissue Distribution,
Radionuclides
B33
-- Atmosphere
Metabolism,
Toxicology & Removal of
10/5/912
(Item 612 from file: 103)
00606502
ERA-05-016582; INS-80-005857; EDB-80-046025
Title: Alpha-sensitive cellulose nitrate track detectors:
the study of environmental contamination
Author(s): Buddemeier, R.W. (Univ. of Hawaii, Honolulu);
Gatrousis,
Title:
C.;
White,
M.G.;
Dunaway,
P.B.
applications to
Biermann,
(eds.)
A.H.;
Selected environmental plutonium research reports of the NAEG
Corporate Source:
Holmes
and Narver,
Inc.,
Mercury,
NV
(USA)
Conference Title: Plutonium information conference
Conference Location: San Diego, CA, USA
Conference Date:
Publication Date: Jun 1978
p 593-607
Report Number(s):
NV0-192(Vol.2);
CONF-780212-(Vol.2)
Document Type: Analytic of a Report;
Language: English
Journal Announcement: EDB8004
Numerical data
Availability: Dep. NTIS, PC A19/MF AOQl.
Subfile:
INS
(US Atomindex input);
(Technical Information Center).
Country of Origin:
United States
28 Feb 1978
9004031
(-1987)
ERA
(Energy Research Abstracts);
TIC