Table 5 Radionuclide activity concentration in sediments (Bq/kg) based on gamma spectrometry measurements.

From: Pit lakes from Southern Sweden: natural radioactivity and elementary characterization

Sediment site number

238U series

232Th series

235U series

137Cs

40K

234Th

226Ra

210Pb

S3A

336 ± 11

347 ± 12

299 ± 5

47 ± 2

19 ± 2

 < 0.8

1,354 ± 44

S3A-2

381 ± 42

371 ± 15

360 ± 14

72 ± 5

26 ± 6

 < 1.8

1,210 ± 74

S3B

1,472 ± 57

1,301 ± 50

1,353 ± 44

172 ± 17

79 ± 9

5.3 ± 0.9

1,405 ± 52

S3B-2

1,366 ± 42

1,251 ± 45

1,379 ± 28

173 ± 10

63 ± 6

5.9 ± 0.8

1,363 ± 60

S3C-2

828 ± 21

1,003 ± 99

964 ± 10

136 ± 6

42 ± 7

1.3 ± 0.2

972 ± 38

S4A

77 ± 5

96 ± 5

82 ± 4

68 ± 4

 < 6.6

 < 0.7

971 ± 32

S6A

8 ± 2

10 ± 1

14 ± 2

7 ± 2

 < 7.2

 < 0.8

56 ± 9

S9A

58 ± 9

63 ± 4

92 ± 7

35 ± 1

 < 7.8

0.9 ± 2

734 ± 27

S10A

33 ± 3

44 ± 2

47 ± 3

32 ± 2

 < 7.9

2.5 ± 4

499 ± 22

S11B

17 ± 3

18 ± 1

20 ± 1

15 ± 2

 < 8.2

 < 0.5

382 ± 15

S14A

21 ± 2

31 ± 3

51 ± 3

31 ± 3

 < 6.7

5.8 ± 7

724 ± 26

S15A

73 ± 9

87 ± 3

85 ± 3

69 ± 4

 < 7.1

0.6 ± 1

738 ± 27

S19A

20 ± 3

26 ± 2

28 ± 3

18 ± 3

 < 8.7

2.7 ± 4

437 ± 21

S21A

1,070 ± 35

1,420 ± 30

715 ± 12

538 ± 37

49 ± 6

1.7 ± 5

1,162 ± 53

S22A

238 ± 17

263 ± 5

217 ± 20

162 ± 15

12 ± 4

 < 1.0

1,418 ± 49

S23A

514 ± 7

258 ± 33

520 ± 15

246 ± 13

20 ± 2

1.8 ± 2

1,138 ± 38

  1. 232Th results comprise the average of 228Ac, 212Pb, 212Bi and 208Tl.
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