Table 2.

Dietary intake of 134Cs and 137Cs

Dietary intake, Bq/dEstimates of committed effective dose, μSv/y*
Area134Cs137Cs134Cs + 137Cs
Kawauchi village
n > LOD (%)28 (35)48 (61)
 Range (median)<0.40 to 4.0 (<0.40)<0.21 to 6.6 (0.52)<2.3 to 59 (3.8)
 Mean ± SD0.38 ± 0.500.67 ± 0.865.8 ± 7.4
 GM (GSD)0.27 (2.0)0.45 (2.3)4.2 (2.1)
Tamano area of Soma city
n > LOD (%)14 (88)14 (88)
 Range (median)<0.31 to 8.7 (0.54)<0.38 to 13 (0.86)<3.8 to 120 (7.7)
 Mean ± SD1.3 ± 2.12.2 ± 3.319 ± 30
 GM (GSD)0.73 (2.7)1.11 (3.1)10.4 (2.9)
Haramachi area of Minamisoma city
n > LOD (%)19 (63)21 (70)
 Range (median)<0.21 to 3.9 (0.40)<0.26 to 6.6 (0.63)<2.7 to 58 (6.8)
 Mean ± SD0.60 ± 0.710.98 ± 1.268.8 ± 10.7
 GM (GSD)0.40 (2.4)0.58 (2.8)5.7 (2.5)
  • * Committed effective doses by ingestion of radiocesium were calculated using effective dose coefficients (0.019 μSv/Bq for 134Cs and 0.013 μSv/Bq for 137Cs). It is assumed that the daily intake of radiocesium was constant over the course of a year.