TABLE 5-1. RESULTS OF ENEWETAK EXTERNAL QUALITY CONTROL PROGRAM
Values are pCi/g, plus or minus 2 sigma counting error
Batch No.
(Date)
1
(12/78)
2
(3/79)
241 am
238 Py
32.9
23.0
30
33
+ 0.4*
+ 2.3
+1
+ 1.4
1.3
Not
1.2
Not
24.0
+ 2.4
Not Done
37
+ 1.4
Not Done
2806+ 1
2.4
+ 0.06*
Done
+ 0.1
Done
+ 0.1
3
(6/79)
6.19 + 0.28*
6.11 + 1.00
0.12 + 0.02*
0.05 + 0.01
4
(9/79) **
3
(9/79)**
239,240 py
137 Cs
Lab
64.0
77.2
66
71
+ 0.62*
+ 4.6
+ 9
+ 10
107.9
119
120
114
+ 0.72*
+ 8.3
+ 2
+2
177
102
156
106
+
+
«6+
+
(3
19
21
5
A
B
Cc
D
64.5
+
6.4
116
+ 8
154
+ 26
B
61
+
8
113
+ 2
Not Done
126
+ 2
107
+1
Not Done
9.90 +
10.7 +
Not Done
0.25*
0.7
10.83 + 0.19*
9.92 + 0.80
5.91 + 1.00
5.63 + 0.6
0.04 + 0.01
Not Done
9.20 +
10.9 +
1.10
0.11
10.5
10.5
6.77 + 1.02
9.94 + 0.59
0.04 + 0.01
Not Done
9.13 +
11.6 +
0.98
0,12
4.01 + 0.7
90sp
*Mean value and associated standard deviation based on several aliquots.
**T wo batehes were analyzed the last quarter.
150
+ 2
C
D
207
++ 2*
37.1 + 1.0
A
Al
+ 0.6
+ 0.12
41.9 + 0.5
34.6 + 7.8
Al
B
9.96 + 0.58
11.7 + 0.12
40.8 + 0.5
38.2 + 6.5
Al
B
10.6 + 0.85
Not Done
B