Use of a Portable Whole-Body Counter to Measure Internal Contamination in a Fallout-Exposed Population Page: 9
13 [11] pages : illustrations, tablesView a full description of this report.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
-9-
The Man Zn&5 concent rat ion/Kg body weight at the Marshallese doe a not
differ significantly between the exposed and unexposod groups, near does it
differ on the basis of s*s or age. However, the mean was generally slightly
higher usong adults than in Juveniles, and higher twig adult sales than adult
fern lea. In t\e period 1959-1961 the value at Zn65 body burden dropped by a
factor of six. The value ef Zn65 in aale adult Marshallese dropped froai
9.o "vc/Kg body weight in 1959 to 1.51 a^C/Kg in 1961. Ho clear reason
emerges ae the basis for this difference, although it i« possible that dietary
variation nay be responsible. It is known that the eowrce ef ZnW in these
people is from fish which selectively concentrate this element. Therefore,
it is possible that the decrease in Zn65 levels noted may he due ta the fact
that the people are eating more canned nests in place of fresh fish. It the
ZnM intake in the diet were decreased radically during that period, the ob-
served fall in the level of Internally-deposited Zn65 would be consistent with
the effective half-life of 7n65 which is approeciaatsly 120 days^. The evi-
dence that could be obtained on this subject is insufficient ts oaks any
conclusive statement, however.
While levels of ZnW body burdens equivalent to those found la the Mar-
shallese (1.15 apc/Xg body weight) were observed in certain BNL reactor
workers^10', the values in the Rongelap population wcro about ton times those
65
measured in the a sobers of the medical team. The mean level at Zn in the
medical team was .015 htc/Kg body weight, Just slightly higher than the pre-
cision of the counter, end therefore not statistically significant (Table 2).
The K content of thg adult Marahalltae aale averages 2.12 ga/Kg, com-
pared to the aeam far the medical team ef 1.72. The average K is gm/tg at a
large group of aale employees at BNL who have been studied is 1.84 ga/Kg body
weight^10*. The higher value for the Marshallese males reflects their wall-
developed musculature and low fat content, as tho value ef K is proportional
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.
Cohn, S. H.; Conard, R. A.; Guamano, B. A. & Robertson, J. S. Use of a Portable Whole-Body Counter to Measure Internal Contamination in a Fallout-Exposed Population, report, April 23, 1962; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc1201065/m1/10/: accessed July 18, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.