V_r

Preparation time [min]

Procedure 1 (500/20)

Procedure 2 (10/10)

P₁/P₂

P1 counts [cpm]

concentration [Bq/l]

P2counts [cpm]

concentration [Bq/l]

60 ml

10

1550 ± 38

92 ± 11

16.9

60

1700 ± 31

102 ± 17

16.7

120

1795 ± 34

104 ± 7

17.3

180

1805 ± 30

49.5 ± 0.8

109 ± 11

48.7 ± 4.9

16.6

90 ml

10

1746 ± 60

96 ± 9

18.2

60

2195 ± 54

134 ± 9

16.4

120

2286 ± 50

142 ± 3

16.1

180

2315 ± 49

63.4 ± 0.7

145 ± 5

64.7 ± 2.3

16.0

120 ml

10

2083 ± 63

114 ± 10

18.3

60

2567 ± 33

167 ± 11

15.4

120

2780 ± 34

183 ± 8

15.2

180

2808 ± 30

76.9 ± 0.8

187 ± 7

83.5 ± 3.1

15.0

360 ml

10

3981 ± 124

270 ± 11

14.7

60

5329 ± 81

366 ± 19

14.6

120

6566 ± 81

382 ± 14

17.2

180

6626 ± 73

181.6 ± 2.0

402 ± 22

179.5 ± 9.0

16.5

480 ml

10

5624 ± 142

286 ± 16

19.7

60

7166 ± 94

418 ± 22

17.1

120

7882 ± 56

474 ± 13

16.6

180

8026 ± 91

219.9 ± 2.4

494 ± 18

220.5 ± 8.3

16.2