Table 6 Validation results of mixed spiked samples of 241Am, and 90Sr/90Y standard solution in simulated saline water.

From: Simultaneous determination of gross alpha/beta activities in water by liquid scintillation counting and its applications in the environmental monitoring

Sample No

Solid mass (mg)

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

180

1: 1.6

(1.09 ± 0.01) E−01

(1.04 ± 0.04) E−01

− 4.6

(1.71 ± 0.01) E−01

(1.46 ± 0.04) E−01

− 14.6

LαLβ

360

1: 1.9

(9.23 ± 0.05) E−02

(8.90 ± 0.33) E−02

− 3.6

(1.77 ± 0.01) E−01

(1.53 ± 0.04) E−01

− 13.6

HαHβ

180

1: 1.5

8.23 ± 0.03

8.28 ± 0.04

0.6

(1.25 ± 0.01) E + 01

(1.28 ± 0.02) E + 01

2.4

HαHβ

360

1: 1.5

8.21 ± 0.03

8.34 ± 0.04

1.6

(1.26 ± 0.01) E + 01

(1.29 ± 0.02) E + 01

2.4

LαMβ

180

1: 16.7

(2.06 ± 0.01) E−01

(1.99 ± 0.05) E−01

− 3.4

3.43 ± 0.01

3.48 ± 0.06

1.5

LαMβ

360

1: 16.0

(2.26 ± 0.01) E−01

(2.16 ± 0.05) E−01

− 4.4

3.61 ± 0.01

3.43 ± 0.05

− 5.0

LαHβ

180

1: 87.5

(1.44 ± 0.01) E−01

(1.37 ± 0.05) E−01

− 4.9

(1.26 ± 0.01) E + 01

(1.28 ± 0.02) E + 01

1.7

LαHβ

360

1: 101.6

(1.24 ± 0.01) E−01

(1.17 ± 0.06) E−01

− 5.6

(1.26 ± 0.01) E + 01

(1.28 ± 0.02) E + 01

1.6

MαMβ

180

1.3: 1

4.11 ± 0.02

4.14 ± 0.03

0.7

3.21 ± 0.01

3.19 ± 0.02

− 0.6

MαMβ

360

1.3: 1

4.13 ± 0.02

4.17 ± 0.03

1.0

3.17 ± 0.01

3.26 ± 0.02

2.8

MαLβ

180

24.7: 1

4.10 ± 0.02

4.17 ± 0.03

1.8

(1.66 ± 0.01) E−01

(1.44 ± 0.02) E−01

− 13.3

MαLβ

360

23.0: 1

4.10 ± 0.02

4.21 ± 0.03

2.7

(1.78 ± 0.01) E−01

(1.58 ± 0.02) E−01

− 11.3

HαLβ

180

67.3: 1

(1.05 ± 0.01) E + 01

(1.04 ± 0.02) E + 01

− 1.0

(1.56 ± 0.01) E−01

(1.30 ± 0.03) E−01

− 16.7

HαLβ

360

64.3: 1

(1.01 ± 0.01) E + 01

(1.05 ± 0.02) E + 01

4.0

(1.57 ± 0.01) E−01

(1.36 ± 0.03) E−01

− 13.4

HαMβ

180

2.6: 1

8.21 ± 0.03

8.22 ± 0.04

0.2

3.12 ± 0.01

3.07 ± 0.02

− 1.6

HαMβ

360

2.8: 1

8.23 ± 0.03

8.28 ± 0.04

0.6

2.99 ± 0.01

3.06 ± 0.02

2.3

  1. aData obtained by multiplying the activity of the standard solution and the mass added. The expanded uncertainty corresponds to k = 1. bThe expanded uncertainty corresponds to k = 1.
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