Amchitka radiobiological program. Progress report, March--December 1972 Page: 4 of 99
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
ABSTRACT
The Amchitka Radiobiological Program, to collect biological and environ-
mental samples for radiometric analyses, began in 1970 and is continuing.
An account of the program from July 1970 to February 1972 has been given
in two previous progress reports, Held (1971) and Held (1972). This re-
port extends the account of the program through 1972.
Recent results of analyses have been appended to previously prepared
tables and include analyses for: 1) gamma-emitting radionuclides in air
filters, seawater, freshwater, marine algae, marine invertebrates, marine
fish, sea otter and freshwater aufwuchs, moss, plants, and fish; 2)
strontium-90 (9 Sr) in rats and birds; and 3) tritium (3H) in seawater,
freshwater, and fish. Tables from the previous reports were revised by sum-
marizing the pre-Cannikin data, recalculating the values for zirconium-95
(95Zr) and niobium-95 (95Nb), and adding data for beryllium-7 (7Be). Also,
the limits of 3H detection were lowered to about 15 tritium units (TU).
The results of the recent analyses indicate that: 1) no new radionuclides
are present; 2) the most abundant radionuclides are naturally occurring
7Be and potassium-40 (40K); 3) the trace quantities of fission products,
induced radionuclides and 3H present are from world fallout; and, 4)
a trace of 3H contamination remains in some Long Shot ponds as previously
reported. It is concluded from the results of analyses of samples
collected between September 1969 and December 1972 as reported in this
and two previous progress reports, that there were no radionuclides of
Milrow or Cannikin origin in the water, plants, and animals of Amchitka
Island.i
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Held, E.E.; Nelson, V.A.; Schell, W.R. & Seymour, A.H. Amchitka radiobiological program. Progress report, March--December 1972, report, June 1, 1973; United States. (https://digital.library.unt.edu/ark:/67531/metadc1029584/m1/4/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.