Table 1 Dietary intake of radioactive cesium in Fukushima Prefecture
Sampling site | n | Food volume (g/day) | Water content (%) | Daily intake (Bq/day) | Estimated dose (μSv/year) | ||
|---|---|---|---|---|---|---|---|
134Cs | 137Cs | ||||||
Fukushima total | 55 | n > MDL (%) | – | – | 36 (65.5) | 35 (63.6) | |
Median (range) | 2,053 (1,100–3,145) | 80.8 (73.3–97.6) | 0.2 (ND–7.2) | 0.3 (ND–7.0) | 3.0 (ND–83.1) | ||
Mean ± SD | 2,178 ± 400 | 81.9 ± 4.5 | 0.5 ± 1.1 | 0.6 ± 1.0 | 6.4 ± 12.5 | ||
Iwaki | 10 | n > MDL (%) | – | – | 9 (90.0) | 9 (90.0) | |
Median (range) | 2,241 (1,879–2,690) | 82.1 (76.8–86.1) | 0.4 (ND–2.5) | 0.7 (ND–1.6) | 6.5 (ND–24.7) | ||
Mean ± SD | 2,238 ± 272 | 81.5 ± 3.3 | 0.7 ± 0.8 | 0.7 ± 0.5 | 8.6 ± 7.8 | ||
Souma | 10 | n > MDL (%) | – | – | 7 (70.0) | 8 (80.0) | |
Median (range) | 2,451 (2,044–2,795) | 80.5 (73.3–87.1) | 0.6 (ND–7.2) | 0.9 (ND–7.0) | 8.2 (ND–83.1) | ||
Mean ± SD | 2,395 ± 293 | 80.1 ± 4.2 | 1.4 ± 2.2 | 1.6 ± 2.2 | 17.4 ± 25.3 | ||
Nihonmatsu | 10 | n > MDL (%) | – | – | 5 (50.0) | 4 (40.0) | |
Median (range) | 2,611 (1,964–3,145) | 79.4 (75.1–82.6) | 0.1 (ND–0.9) | ND (ND–0.9) | 1.7 (ND–10.4) | ||
Mean ± SD | 2,529 ± 423 | 78.9 ± 2.3 | 0.3 ± 0.4 | 0.2 ± 0.3 | 2.9 ± 3.6 | ||
Fukushima | 25 | n > MDL (%) | – | – | 15 (60.0) | 14 (56.0) | |
Median (range) | 1,954 (1,100–3,051) | 83.7 (77.9–97.6) | 0.1 (ND–0.8) | 0.2 (ND–1.3) | 1.3 (ND–11.3) | ||
Mean ± SD | 1,927 ± 308 | 84.1 ± 4.8 | 0.2 ± 0.2 | 0.2 ± 0.3 | 2.6 ± 3.1 | ||
Kyoto (Uji) | 19 | n > MDL (%) | – | – | 1 (5.3) | 1 (5.3) | – |
Maximum | – | – | 0.4 | 0.5 | 5.3 | ||
Mean ± SD | 2,955 ± 652 | 87.2 ± 2.5 | – | – | – | ||