Table 1 Radiocaesium concentrations in brown rice and paddy field soil in the southern area of Minamisoma City.

From: Evaluation of the cause of unexplained radiocaesium contamination of brown rice in Fukushima in 2013 using autoradiography and gamma-ray spectrometry

Year

Sample ID

134 + 137Cs conc. (Bq kg-1)*1

Transfer factor

Brown rice

Paddy field soil

HG*2

LG*2

Average

2013

MSG1

1,628.2 ± 7.8

59.5 ± 0.3

152

315.3 ± 1.9

0.4824

MSG4

2,220.4 ± 11.4

49.3 ± 0.2

167

290.4 ± 1.8

0.5767

MSG7

1,271.3 ± 6.9

68.4 ± 0.4

161

427.8 ± 2.0

0.3754

MSG8

1,380.4 ± 6.0

79.7 ± 0.5

172

1,792.1 ± 8.3

0.0960

MSG11

1,345.6 ± 6.0

36.7 ± 0.2

80

449.9 ± 2.1

0.1788

MSG14

843.2 ± 3.9

40.0 ± 0.4

76

510.9 ± 2.4

0.1481

MSG17

1,197.2 ± 6.2

55.5 ± 0.3

106

1,054.8 ± 5.7

0.1001

MSG18

1,590.5 ± 2.1

33.2 ± 0.7

72

1,222.5 ± 5.8

0.0590

MSG19

938.3 ± 3.2

29.9 ± 0.6

50

619.8 ± 2.9

0.0805

MSG20

1,319.1 ± 2.0

47.6 ± 1.0

115

369.4 ± 1.7

0.3111

2014

MSG38

−

−

18.5 ± 0.1

1,590.7 ± 7.2

0.0116

MSG39

−

−

3.7 ± 0.0

2,144.9 ± 9.5

0.0017

MSG41

−

−

24.2 ± 0.1

1,860.7 ± 8.4

0.0130

  1. *1Measured value ± counting error. The radionuclide concentrations were corrected to the values on 1 October of each year.
  2. *2HG: highly contaminated grains. LG: less contaminated grains.
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