Table 4 U, Th and Po activity concentrations of radionuclides from 238U series, 235U and 232Th in pit lake sediments (n = 12) determined by alpha spectrometry.

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

(Bq/kg)

238U

234U

230Th

232Th

210Po

235U

Min

4.7 ± 0.4

4.2 ± 0.4

13 ± 2

11 ± 2

15 ± 1

0.05 ± 0.03

Max

1,190 ± 35

1,390 ± 40

1,400 ± 86

112 ± 9

1,690 ± 110

48 ± 3

Average

217

232

223

62

257

7.8

SD

384

448

432

54

576

15.2

  1. Values are given as range (minimum and maximum), average and standard deviation.
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