Sample No.

Ba-133 added

(Bq/Vial)

Gamma Spectrometry

LSC

Counts,

In Time 3 h

Recovery

(%)

CPM,

In Time 600 min.

Recovery

(%)

Standard

8

11,101.4 ± 31.5

33.5 ± 2.30

1

8

10,458 ± 92

92

15.1 ± 3.80

45

2

8

10,582.5 ± 100

85

19.43 ± 4.40

58

3

8

8466 ± 102

77

25.13 ± 5.01

75

4

8

9835.5 ± 90

79

26.8 ± 5.10

80

5

8

7719 ± 83

62

23.45 ± 4.80

70

6

8

9586.5 ± 70

77

11.725 ± 3.40

35