PRIVACY ACT MATERIAL REMOVED
‘Table 2— POTASSIUM AND CAESIUM CONTENTS OF 16 MEN NOT OCCUPATIONALLY
EXPOSED TO Cs!*?, MEASURED BETWEEN JUNE 1956 AND JULY 1957
,
Potassium content
Date
measured
Subject
z
cs!3? content
% body weight
mye
puc/g of K
0.239 + 0.026
0.219 + 0.023
0.202 40.022
0.2014 0.014
0.236 +0.015
0.206 + 0.007
4.7+#1.2
<Bz1
4.7 + 0.8
4,241.3
6.14 0.7
3.2 + 0.4
3139
<4B + 8B
2544
27+9
3444
20+3
153 +9
0.214 + 0.012
5.24 0.7
3445
Jan. 22
187 +10
0.244 + 90.013
4.74 0.8
25 +4
Feb. 15
133 47
0.183 40.010
5.34 0.5
4044
_ Feb. 21
Comments
1956
June
June
June
June
Sept.
Nov.
25
26
27
28
28
22
Nov. 30
Dec. 6
153
168
188
155
177
r69
417
+ 18
+ 20
+11
+ 11
+ 5
110 +9
0.191 40.016
4.30.7
3947
See also Mar. 7, 1957
See also Jan. 22, 1957
See also Feb, 19, 1957
See also Nov, 22, 1956
Resident of Leeds
Mean of 2 measurements
1957
143 +8
Q.181 + 6.010
4,440.6
31434
Feb. 19
Feb, 21—-
183 + 6
0.198 + 0.007
7.140.5
39 + 3
Mean of 2 measurements
Mar. 5
159 + 4
0.255 + 0.006
4.34 0.3
27+ 2
Mean of 3 measurements
158 + 4
0.208 + 0.005
3.8 + 0.3
2442
Mean of 3 measurements
Mar. 7
14647
0.225 + 0.011
6.5 + 0.5
4444
Mar. 11
15449
0,184 40.011
5.7 4 0.7
37 + 5
Apr. 24
163 +8
12947
6,230 + 0.011
0.196 40.011
6.5 + 0.6
40+4
Australian
June 24
190 + 8
0.238 + 0.010
B.4 4 0.6
4444
Londoner
July 22
149 «9
U.186 4 0.011
68.5 2 U7
4445
Feb. 20—
Feb. 25
May 30
Mean
Standard deviation
Standard error
0.212
0.023
0.005
5.2405
,
4145
34.0
7.6
1.7
reported (0.188 + 0.006 per cent for 12 men) by this method’ (Marinelli, 1957). Because of the
biological variation such comparisons are not strictly valid, but there is also the possibility
that the method of calibration used at the Argonne National Laboratory gives different results
from that used here. American practice has been to administer orally a small quantity of KY?
and to compare the counting rates in various energy bands obtained in vivo with those obtained
from a source of the same activity tn vitro.
The mean value for the Cs!*" content of the same 16 subjects as above is 34.0 puc per gram
of potassium, with a standard deviation of 7.6 uuc per gram of K. The lowest and highest value
observed are 20 and 44 uc per gram of K, respectively. Miller and Marinelli® reported that
there were no substantial changes in the caesium contents between the spring of 1956 and the
end of the year, The values for four of their subjects studied systematically ranged from about
33 to about 45 yuc per gram of K.
Anderson et al.* reported an average Cs!8? content of 5 muc for about 250 subjects measured during 1956 in the U.S.A. This is about the same as found here.
Bird’ reported values of 5 to 8 muc for the Cs!3" content of three subjects resident in
Leeds, measured in April 1957, in general agreement with the levels for the same time shown
‘in Table 2, These were a little higher than the results reported by Burch et al."! for subjects
measured between May and October 1956, but the data are too sparse for any definite conclusions to be drawn. Further, in view ‘of the variation of the Cs'*? content of milk with geographi-
cal location (Booker, 1957), comparisons on a regional basis are unjustified.'”
In conclusion, it may be noted that if the distribution of potassium and caesium in the body
differ markedly from uniform, as used in the phantom, then the absolute results may be in
error.
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PRIVACY ACT MATERIAL REMOVED
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