Table 3 The Radionuclide Activity and Corresponding Background Value

From: The Environmental Geochemistry of Trace Elements and Naturally Radionuclides in a Coal Gangue Brick-Making Plant

 

238U (Bq/kg)

232Th (Bq/kg)

226Ra (Bq/kg)

210Pb (Bq/kg)

210Po (Bq/kg)

40K (Bq/kg)

222Rn (Bq/m3)

Coal gangue

46.6 ± 5.3

87.0 ± 4.8

38.8 ± 6.4

42.6 ± 3.6

23.8 ± 2.7

540 ± 24

 

Fly ash

85.8 ± 7.2

139 ± 6

72.0 ± 6.5

122 ± 9

78.5 ± 4.2

758 ± 25

 

Brick

67.1 ± 4.6

113 ± 11

54.8 ± 7.3

28.3 ± 3.7

12.2 ± 2.3

729 ± 4

 

Particulates in flue gas

93.2 ± 5.4

144 ± 12

76.3 ± 7.8

636 ± 84

386 ± 45

747 ± 32

 

Brick plant

      

337 ± 3.5

China CG

77.0 ± 27.0

59.7 ± 44.2

64.5 ± 38.6

  

506 ± 477

 

Anhui CG

83.4 ± 33

57.4 ± 13

48.1 ± 22

  

325.1 ± 72

 

Slovenia coal

78 ± 6

16 ± 2

85 ± 7

85 ± 10

54 ± 4

150 ± 10

 

Indian coal

 

19.5

16.8

 

12.3–43.1

37.2

 

Anhui soil/air

41.4 ± 15.6

53.1

41.3

  

553.4

74

World soil/air

35.0

30.0

35.0

  

400

45.0 ± 2.1

  1. The background values of China coal gangue (CG), Anhui coal gangue, Slovenia coal, Indian coal, Anhui soil, Anhui air and World soil/air are from ref. 34,35,36,37,38, 40 respectively.
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