174
Table 4 Uranium concentrations (mg kg
−1 -dry) in crop samples collected in Japan
Crop group and
English name
Scientific name
N
GM
GSD
Min.
Max.
Cereals
Brown rice (hulled
rice)
Oryza sativa L.
98 1.28 × 10
−4
2.2 2.11 × 10
−5
9.51 × 10
−4
White rice (polished
rice)
Oryza sativa L.
91 8.74 × 10
−5
1.9 1.63 × 10
−5
8.87 × 10
−4
Others (wheat,
barley)
Triticum L.,
Hordeum vulgare L.
7 2.63 × 10
−4
3.8 6.22 × 10
−5
2.94 × 10
−3
Leafy vegetables (head or bulb type)
Cabbage
Brassica oleracea L.
var. capitata
9 4.66 × 10
−4
2.1 1.83 × 10
−4
1.56 × 10
−3
Chinese cabbage
Brassica rapa L. var.
pekinensis
7 6.27 × 10
−4
2.0 2.41 × 10
−4
1.53 × 10
−3
Others (lettuce,
onion)
Lactuca sativa L.,
Allium cepa L.
5 3.41 × 10
−4
2.7 6.57 × 10
−5
8.39 × 10
−4
Leafy vegetables (loose-leaf type)
Spinach
Spinacia oleracea L. 6 6.12 × 10
−3
2.1 2.70 × 10
−3
1.79 × 10
−2
Japanese leek
Allium fistulosum L.
13 1.79 × 10
−3
3.8 2.59 × 10
−4
2.35 × 10
−2
Others (carrot
leaves,
green pak choi,
Japanese radish
leaves,
Nozawana,
Takana)
Daucus carota subsp.
sativus,
Brassica rapa L. var.
chinensis,
Raphanus sativus L.
var. longipinnatus,
Brassica rapa L. var.
hakabura,
Brassica juncea L.
var. integrifolia
5 1.07 × 10
−2
4.1 1.69 × 10
−3
8.76 × 10
−2
Fruit vegetables
Cucumber
Cucumis sativus L.
4 4.71 × 10
−4
1.5 2.98 × 10
−4
7.38 × 10
−4
Eggplant
Solanum melongena
4 2.57 × 10
−4
1.9 1.11 × 10
−4
5.26 × 10
−4
Others (bitter
melon, sweet
pepper, tomato)
Momordica charantia L.
var. pavel Crantz,
Capsicum annuum L.
var. grossum,
Solanum
lycopersicum L.
5 4.26 × 10
−4
4.1 8.61 × 10
−5
1.46 × 10
−3
Root vegetables
Japanese radish
Raphanus sativus L.
var. longipinnatus
7 9.49 × 10
−4
2.2 2.54 × 10
−4
2.35 × 10
−3
Carrot
Daucus carota subsp.
sativus
3 1.46 × 10
−3
3.7 4.23 × 10
−4
5.86 × 10
−3
Beans
Soybean
Glycine max
6 4.77 × 10
−4
2.2 1.68 × 10
−4
1.24 × 10
−3
Tubers
Potato
Solanum tuberosum L. 46 5.83 × 10
−4
2.5 6.85 × 10
−5
6.43 × 10
−3
Others (sweet
potato, taro)
Ipomoea batatas L.,
Colocasia esculenta
5 1.58 × 10
−3
2.8 3.97 × 10
−4
4.56 × 10
−3
K. Tagami and S. Uchida
Table 4 Uranium concentrations (mg kg
−1 -dry) in crop samples collected in Japan
Crop group and
English name
Scientific name
N
GM
GSD
Min.
Max.
Cereals
Brown rice (hulled
rice)
Oryza sativa L.
98 1.28 × 10
−4
2.2 2.11 × 10
−5
9.51 × 10
−4
White rice (polished
rice)
Oryza sativa L.
91 8.74 × 10
−5
1.9 1.63 × 10
−5
8.87 × 10
−4
Others (wheat,
barley)
Triticum L.,
Hordeum vulgare L.
7 2.63 × 10
−4
3.8 6.22 × 10
−5
2.94 × 10
−3
Leafy vegetables (head or bulb type)
Cabbage
Brassica oleracea L.
var. capitata
9 4.66 × 10
−4
2.1 1.83 × 10
−4
1.56 × 10
−3
Chinese cabbage
Brassica rapa L. var.
pekinensis
7 6.27 × 10
−4
2.0 2.41 × 10
−4
1.53 × 10
−3
Others (lettuce,
onion)
Lactuca sativa L.,
Allium cepa L.
5 3.41 × 10
−4
2.7 6.57 × 10
−5
8.39 × 10
−4
Leafy vegetables (loose-leaf type)
Spinach
Spinacia oleracea L. 6 6.12 × 10
−3
2.1 2.70 × 10
−3
1.79 × 10
−2
Japanese leek
Allium fistulosum L.
13 1.79 × 10
−3
3.8 2.59 × 10
−4
2.35 × 10
−2
Others (carrot
leaves,
green pak choi,
Japanese radish
leaves,
Nozawana,
Takana)
Daucus carota subsp.
sativus,
Brassica rapa L. var.
chinensis,
Raphanus sativus L.
var. longipinnatus,
Brassica rapa L. var.
hakabura,
Brassica juncea L.
var. integrifolia
5 1.07 × 10
−2
4.1 1.69 × 10
−3
8.76 × 10
−2
Fruit vegetables
Cucumber
Cucumis sativus L.
4 4.71 × 10
−4
1.5 2.98 × 10
−4
7.38 × 10
−4
Eggplant
Solanum melongena
4 2.57 × 10
−4
1.9 1.11 × 10
−4
5.26 × 10
−4
Others (bitter
melon, sweet
pepper, tomato)
Momordica charantia L.
var. pavel Crantz,
Capsicum annuum L.
var. grossum,
Solanum
lycopersicum L.
5 4.26 × 10
−4
4.1 8.61 × 10
−5
1.46 × 10
−3
Root vegetables
Japanese radish
Raphanus sativus L.
var. longipinnatus
7 9.49 × 10
−4
2.2 2.54 × 10
−4
2.35 × 10
−3
Carrot
Daucus carota subsp.
sativus
3 1.46 × 10
−3
3.7 4.23 × 10
−4
5.86 × 10
−3
Beans
Soybean
Glycine max
6 4.77 × 10
−4
2.2 1.68 × 10
−4
1.24 × 10
−3
Tubers
Potato
Solanum tuberosum L. 46 5.83 × 10
−4
2.5 6.85 × 10
−5
6.43 × 10
−3
Others (sweet
potato, taro)
Ipomoea batatas L.,
Colocasia esculenta
5 1.58 × 10
−3
2.8 3.97 × 10
−4
4.56 × 10
−3
K. Tagami and S. Uchida