Worldwide Open Proficiency Test: Determination of ... - Nucleus - IAEA

[Bq/kg]
600
550
500
450
400
350
300
250
200
Lab
code
Draft, page 42
Rep.
Value
Performance evaluation of Cs-137 measurement results
Rep.
Unc.
IAEA-447 Moss-soil reference material
Unc.
[%]
Target Value: 425 ± 10 [Bq/kg]
W
11%
Rel.
Bias
N
10%
A
79%
Cs-137 moss-soil
Laboratory code
A1 A2 True P Prec
1 375.7 21.4 5.70 -11.61 49.4 60.9 A 6.2 A A
2 458.8 2.4 0.53 7.95 33.8 26.6 N 2.4 A W
3 420.0 40.0 9.52 -1.18 5.0 106.4 A 9.8 A A
4 381.0 6.0 1.57 -10.35 44.0 30.1 N 2.8 A W
5 443.0 24.0 5.42 4.24 18.0 67.1 A 5.9 A A
6 423.9 18.4 4.34 -0.26 1.1 54.0 A 4.9 A A
7 419.8 9.3 2.22 -1.22 5.2 35.3 A 3.2 A A
10 420.4 8.5 2.02 -1.09 4.6 33.9 A 3.1 A A
11 438.6 45.7 10.42 3.20 13.6 120.7 A 10.7 A A
12 431.0 35.0 8.12 1.41 6.0 93.9 A 8.5 A A
13 394.4 7.1 1.79 -7.21 30.7 31.6 A 3.0 A A
Final
Score