10/5/9621
00334345
Title:
(Item 661 from file: 103)
AIX-08-340389; EDB-78-022972
Concentrations,
physico-chemical states and mean residence times of
/sup 210/Pb and /sup 210/Po in marine and estuarine waters
Author(s): Schell, W.R. (Washington Univ., Seattle (USA). Lab. of. Radiation
Ecology)
Source: Geochim. Cosmochim. Acta (United Kingdom)
v 41:8.
Coden: GCACA
Publication Date: Aug 1977
p 1019-1031
t
Document Type: Journal Article
Language: English
Journal Announcement: EDB7711
Subfile:
AIX (non-US Atomindex input).
Country of Origin: United States
Abstract: The concentrations and physico-chemical states of /sup 210/Pb
have been measured in Bikini Atoll and Washington State coastal waters,
and /sup 210/Po in Washington coastal waters. Lead-210 concentrations
of 113 and 133 dpm.m/sup -3/ were found in surface water collections
near Bikini Atoll and 29 to 153 dpm.m/sup -3/ in Bikini Lagoon.
The
concentrations of /sup 210/Pb in and near Bikini and in Washington
State waters increased with depth in the upper 150 m at a rate of 0.35
to 0.45 dpm.m /sup -3/.m/sup -1/.
On the North Equatorial Current
waters near Bikini Atoll /sup 210/Pb was found associated predominantly
with the soluble
(colloidal)
fraction,
but in Washington coastal waters
/sup 210/Pb and /sup 210/Po were found associated with the particulate
(> 0.3 ..mu..m) fraction.
The mean residence times of /sup 210/Pb,
calculated from the atmospheric input to marine waters from
precipitation and the concentrations measured in surface water,
were
consistent with the physico-chemical states of /sup 210/Pb found in
samples collected in deep ocean and coastal waters.
of the mean residence times were calculated,
Approximate values
for the upper 50 m,
to be
as follows: 58 days in the Strait of Juan de Fuca, 128 days at the
S-mile (8 km) station off Cape Flattery (Washington), 163 days at the
12-mile
Atoll.
(19 km)
station off Cape Flattery,
and 2.6 yr near Bikini
It appears that /sup 210/Pb and /sup 210/Po can be used to trace
particle removal rates in the upper layers of marine waters.;
Major Descriptors: *COASTAL WATERS -- LEAD 210; *COASTAL WATERS -- POLONIUM
210; *LEAD 210 -- RADIONUCLIDE MIGRATION; *POLONIUM 210 -- RADIONUCLIDE
MIGRATION
Descriptors: CHEMICAL STATE; ESTUARIES; LAYERS; LEVELS; PARTICLES;
QUANTITATIVE CHEMICAL ANALYSIS; QUANTITY RATIO; RADIOECOLOGICAL
CONCENTRATION; SEAS; SEAWATER; TRACER TECHNIQUES
Broader Terms: ALPHA DECAY RADIOISOTOPES; BETA DECAY RADIOISOTOPES;
BETA-MINUS DECAY RADIOISOTOPES; CHEMICAL ANALYSIS; DAYS LIVING
RADIOISOTOPES; ECOLOGICAL CONCENTRATION; ENVIRONMENTAL TRANSPORT;
EVEN-EVEN NUCLEI; HEAVY NUCLEI; HYDROGEN COMPOUNDS; ISOTOPE
APPLICATIONS; ISOTOPES; LEAD ISOTOPES; MASS TRANSFER; NUCLEI; OXYGEN
COMPOUNDS; POLONIUM ISOTOPES; RADIOISOTOPES; SURFACE WATERS; WATER;
YEARS LIVING RADIOISOTOPES
Subject Categories: 520301*
-- Environment, Aquatic -- Radioactive
Materials Monitoring & Transport -- Water -- (1987)
INIS Subject Categories: B32*
10/5/962
00334340
Author(s):
-- Water
(Item 662 from file:
ERA-03-010961;
Nelson, V.A.
103)
NTS-78-001165;
INS-78-001678;
Title: Radiological survey of plants, animals,
and seven atolls in the Marshall Islands.
1974--1975
Corporate
Source:
Ecology
Publication Date:
Report Number(s):
Washington Univ.,
Jan 1977
NV0-269-32
Language:
Report
English
and soil at Christmas Island
Progress report for
(USA).
Lab.
p 78
Contract Number (DOE): EY-76-S-08-0269
Document Type:
Seattle
EDB-78-022967
5aqagk0bo9
of Radiation