Table 5 Validation results of mixed spiked samples of 241Am, and 90Sr/90Y standard solution (solid mass = 0).
Sample No | α/β activity ratio | Theoretical alpha activity (Bq)a | Measured alpha activity (Bq)b | Alpha activity deviation (%) | Theoretical beta activity (Bq)a | Measured beta activity (Bq)b | Beta activity deviation (%) |
|---|---|---|---|---|---|---|---|
LαLβ | 1: 1.5 | (2.30 ± 0.01) E−01 | (2.26 ± 0.05) E−01 | − 1.7 | (3.53 ± 0.01) E−01 | (3.55 ± 0.06) E−01 | 0.6 |
LαLβ | 1: 1.9 | (6.36 ± 0.05) E−02 | (6.44 ± 0.28) E−02 | 1.3 | (1.22 ± 0.01) E−01 | (1.27 ± 0.04) E−01 | 4.1 |
HαHβ | 1: 1.5 | 8.26 ± 0.03 | 8.15 ± 0.04 | − 1.3 | (1.25 ± 0.01) E + 01 | (1.24 ± 0.02) E + 01 | − 0.8 |
LαMβ | 1: 12.8 | (2.45 ± 0.01) E−01 | (2.49 ± 0.05) E−01 | 1.6 | 3.13 ± 0.01 | 3.12 ± 0.05 | − 0.3 |
LαHβ | 1: 50.2 | (2.51 ± 0.01) E−01 | (2.62 ± 0.06) E−01 | 4.4 | (1.26 ± 0.01) E + 01 | (1.24 ± 0.02) E + 01 | − 1.6 |
LαHβ | 1: 84.5 | (1.48 ± 0.01) E−01 | (1.59 ± 0.05) E−01 | 7.4 | (1.25 ± 0.01) E + 01 | (1.23 ± 0.02) E + 01 | − 1.4 |
MαHβ | 1: 5.9 | 2.12 ± 0.01 | 2.13 ± 0.02 | 0.5 | (1.25 ± 0.01) E + 01 | (1.23 ± 0.02) E + 01 | − 1.6 |
MαMβ | 1: 1.5 | 2.10 ± 0.01 | 2.02 ± 0.02 | − 3.8 | 3.15 ± 0.01 | 3.06 ± 0.02 | − 2.9 |
MαLβ | 6.0: 1 | 2.11 ± 0.01 | 2.02 ± 0.02 | − 4.3 | (3.49 ± 0.01) E−01 | (3.60 ± 0.03) E−01 | 3.2 |
MαLβ | 24.1: 1 | 4.10 ± 0.02 | 4.08 ± 0.03 | − 0.5 | (1.70 ± 0.01) E−01 | (1.76 ± 0.02) E−01 | 3.5 |
HαLβ | 22.6: 1 | 8.30 ± 0.03 | 8.21 ± 0.04 | − 1.1 | (3.67 ± 0.01) E−01 | (3.65 ± 0.03) E−01 | − 0.5 |
HαLβ | 66.1: 1 | 9.92 ± 0.04 | (1.02 ± 0.02) E + 01 | 2.8 | (1.50 ± 0.01) E−01 | (1.43 ± 0.02) E−01 | − 4.7 |
HαMβ | 2.6: 1 | 8.21 ± 0.03 | 8.08 ± 0.04 | − 1.6 | 3.14 ± 0.01 | 3.06 ± 0.02 | − 2.5 |
