Radiation Measurement Results of 149 Items in January
When samples include natural radionuclides we can't deny the possibility of their radiation value counted
together in our results.
The list below only shows the measurement results of the samples brought in.
Radioactive contamination level may differ according to sampling points even within the same address.

★Gamma-ray
Measuring instrument
Product of ATOMTEX AT1320A

FeatureNa I Scintillation Spectrometer
Product of BERTHOLD LB2045 ・Gamma-ray spectrometerwith Na I scintillation detector.

Guide to lower limit※
Food（Sample 1㎏）Lower limit

1.0Bq/Kg

Soil（Sample 1㎏）Lower limit

2.5Bq/Kg

Lower limit

1.0Bq/Kg

Water（Sample 20L）
Lower limit

0.02Bq/L

Germanium Semiconductor detector
・Radioactivity measurement series.

Food（Sample 2㎏）Lower limit

0.04Bq/Kg

Quantitative analysis based on "Gamma-ray

Soil（Sample 1㎏）Lower limit

0.06Bq/Kg

spectrometry with germanium semiconductor detector."

Material（Sample 1㎏）

Lower limit

0.06Bq/Kg

・Relative efficiency 35％

Water（Sample 20L）
Lower limit

0.001Bq/L

Material（Sample 1㎏）

ORTEC

GEM30-70※The lower limit varies depending on the sample weight and measurement time.

Measuring instrument:Na I Scintillation Spectrometer
Samples
Taro
Sweet potato
Jerusalem
artichoke
CarrotJapanese
red radish
Turnip(pulp)
Turnip (leaf)
Lettuce
SpinachJapanesemustard spinach
Canola flower
Wasabi greens
Chijimi Yukina
Sendai Yukina(Bq/kg raw:Weight of raw sample

Bq/kg dry:Weight of dried sample)

Sampling Point Sampling Month Measurement Result Uncertainty Total Amount of Cesium Minimum Limit of Detection
Cs137 4.7 Bq/kg raw ± 1.7 Bq/kg raw
Cs137 2.2 Bq/kg raw
Namie,Futaba,
Jan-21
Fukushima
Cs134
Cs134 2.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.3 Bq/kg raw
Limit of
Iwaki cityOct-20
Cs134
Cs134 2.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 1.8 Bq/kg raw± ――Limit of
Iwaki cityJan-21
Cs134
Cs134 1.6 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.0 Bq/kg raw
Namie,Futaba,
Limit ofJan-21
Fukushima
Cs134
Cs134 1.8 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 2.0 Bq/kg raw± ――Tairashimokabeya,
Limit ofJan-21
Iwaki
Cs134
Cs134 1.9 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.3 Bq/kg raw
Limit of
Iwaki cityJan-21
Cs134
Cs134 2.2 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 2.6 Bq/kg raw± ――Limit of
Iwaki cityJan-21
Cs134
Cs134 2.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 3.9 Bq/kg raw
Limit of
Iwaki cityJan-21
Cs134
Cs134 3.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 1.9 Bq/kg raw± ――Limit of
Gunma Pref.
Jan-21
Cs134
Cs134 1.5 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 3.8 Bq/kg raw
Limit ofIbaraki Pref.
Jan-21
Cs134
Cs134 3.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 3.1 Bq/kg raw± ――Limit of
Chiba Pref.
Jan-21
Cs134
Cs134 2.9 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 3.5 Bq/kg raw
Limit of
Iwaki cityJan-21
Cs134
Cs134 3.3 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 4.9 Bq/kg raw± ――Limit of
Miyagi Pref.
Jan-21
Cs134
Cs134 4.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 4.0 Bq/kg raw
Fukushima,
Limit ofJan-21
Fukushima
Cs134
Cs134 3.5 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection

4.7※"＿" used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

1

★Gamma-ray(Bq/kg raw:Weight of raw sample

Bq/kg dry:Weight of dried sample)

Sampling Point Sampling Month Measurement Result Uncertainty Total Amount of Cesium Minimum Limit of Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 4.5 Bq/kg raw
Hirono,Futaba,
Limit of
TatsoiJan-21
Fukushima
Cs134
Cs134 3.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137 5.6 Bq/kg raw ± 1.5 Bq/kg raw
Cs137 1.7 Bq/kg raw
Namie,Futaba,
Yacon
Jan-21
Fukushima
Cs134
Cs134 1.5 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Under
Minimum
Cs137
Cs137 2.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Hirono,Futaba,
Limit of
Yacon
Jan-21
Fukushima
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 1.9 Bq/kg raw± ――Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.7 Bq/kg raw
Otama,Adachi,
Limit of
Yacon
Jan-21
Fukushima
Cs134
Cs134 1.5 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Cs137
Cs137 2.4 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Limit of
Cauliflower
Iwaki cityJan-21
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 2.2 Bq/kg raw± ――Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.3 Bq/kg raw
Snap garden
Limit of
Kagoshima Pref.
Jan-21
peas
Cs134
Cs134 2.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Cs137
Cs137 1.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Green soybeans
Limit of
Tomitsu Iwaki
Aug-20(boiled)
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 1.4 Bq/kg raw± ――Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.2 Bq/kg raw
Limit ofOkra(boiled)
Tomitsu Iwaki
Aug-20
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.3 Bq/kg raw
Hirata,Ishikawa,
Limit ofJapanese yam
Jan-21
Fukushima
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Hanawa,HigashiCs137 14.1 Bq/kg raw ± 6.1 Bq/kg raw
Cs137 8.6 Bq/kg raw
Synurusshirakawa,Fukushim Dec-20
pungens
Cs134
Cs134 8.2 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
aCs137 5.5 Bq/kg raw ± 1.3 Bq/kg raw
Cs137 1.3 Bq/kg raw
Namie,Futaba,
GinkgoDec-20Fukushima
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 1.2 Bq/kg raw
± ―
―
Cs137
― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 4.1 Bq/kg raw
Wild Japanese
Limit ofIwaki
city
Jan-21
parsley
Cs134
Cs134 3.8 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.9 Bq/kg raw
Dried Japanese
Hirono,Futaba,
Limit ofDec-20radishFukushima
Cs134
Cs134 2.3 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 3.8 Bq/kg raw
Dried Japanese
Hirata,Ishikawa,
Limit ofDec-20FukushimaradishCs134
Cs134 3.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.9 Bq/kg raw
Dried sweet
Limit ofIbaraki Pref.
Dec-20
potapo(homemade)Cs134
Cs134 1.8 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137 2.7 Bq/kg raw ± 1.5 Bq/kg raw
Cs137 1.3 Bq/kg raw
Hirata,Ishikawa,
Dried persimmon
Jan-21
Fukushima
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Shitake mushroom
Cs137 5.7 Bq/kg raw ± 1.9 Bq/kg raw
Cs137 2.4 Bq/kg raw
Nihonmatsu,
grown inJan-21
Fukushima
Bq/kg
raw
Bq/kg
raw
bacteria-bed
Cs134
Cs134 2.0 Bq/kg raw± ――Shitake mushroom
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 3.0 Bq/kg raw
grown in
Limit of
Fukushima Pref.
Jan-21
bacteria-bed
Cs134
Cs134 2.6 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Shitake mushroom
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.6 Bq/kg raw
Fukushima,
grown in
Limit ofJan-21
Fukushima
bacteria-bed
Cs134
Cs134 1.4 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.3 Bq/kg raw
Koriyama,
Limit of
Nameko mushroom
Jan-21
Fukushima
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137 5.1 Bq/kg raw ± 2.8 Bq/kg raw
Cs137 3.7 Bq/kg raw
Golden oyster
Otama,Adachi,
Jan-21
mushroom
Fukushima
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 2.9 Bq/kg raw
± ―
―
Cs137
― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.1 Bq/kg raw
Limit of
Mackerel
Fukushima Pref.
Jan-21
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.4 Bq/kg raw
Hisanohama Port
Limit ofWillow flounderJan-21/Iwaki
Cs134
Cs134 1.2 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.8 Bq/kg raw
Roundnose flounder
Limit of
Fukushima
Pref.
Jan-21(flesh・liver・egg)
Cs134
Cs134 1.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Samples

5.6

14.1
5.5

2.7
5.7

5.1

※"＿" used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

2

★Gamma-ray(Bq/kg raw:Weight of raw sample

Bq/kg dry:Weight of dried sample)

Sampling Point Sampling Month Measurement Result Uncertainty Total Amount of Cesium Minimum Limit of Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.2 Bq/kg raw
Limit of
Gurnard
Fukushima Pref.
Jan-21
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.3 Bq/kg raw
Limit of
Dolphin
Iwate Pref.
Jan-21
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Cs137
Cs137 1.5 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Limit of
OctopusSoma,Fukushima
Jan-21
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 1.4 Bq/kg raw± ――Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.0 Bq/kg raw
Limit ofCod roe
Aomori Pref.
Jan-21
Cs134
Cs134 1.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Cs137
Cs137 2.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Limit of
Wakame seaweed
Miyagi Pref.
Jan-21
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 1.9 Bq/kg raw± ――Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.9 Bq/kg raw
Limit ofApple
Fukushima Pref.
Dec-20
Cs134
Cs134 1.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Cs137
Cs137 2.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Limit ofApple
Fukushima Pref.
Oct-20
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 1.9 Bq/kg raw± ――Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.8 Bq/kg raw
Hobara,Date,
Limit ofApple
Dec-20Fukushima
Cs134
Cs134 1.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.3 Bq/kg raw
Limit ofApple
Nagano Pref.
Oct-20
Cs134
Cs134 2.0 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.4 Bq/kg raw
Limit ofKiwi fruit
Iwaki city
Dec-20
Cs134
Cs134 1.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.5 Bq/kg raw
Limit of
Mandarin orange
Nagasaki Pref.
Dec-20
Cs134
Cs134 1.2 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.6 Bq/kg raw
Limit of
Mandarin orange
Kumamoto Pref.
Dec-20
Cs134
Cs134 1.4 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.4 Bq/kg raw
Hirono,Limit ofLemon
Jan-21
Futaba,Fukushima
Cs134
Cs134 1.3 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.6 Bq/kg raw
Japan
Limit ofWeak flourJan-21(production)
Cs134
Cs134 1.6 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 1.5 Bq/kg raw
Japan
Limit ofMalted rice
Jan-21(production)
Cs134
Cs134 1.4 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.3 Bq/kg raw
Kitakata,
Limit of
Boiled soba
Dec-20Fukushima
Cs134
Cs134 2.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.6 Bq/kg raw
Creaming
Japan
Limit ofJan-21
powder(production)
Cs134
Cs134 2.2 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 2.4 Bq/kg raw
Lithuania
Limit of
OatmealJan-21(production)
Cs134
Cs134 2.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137 573.0 Bq/kg raw ± 115.0 Bq/kg raw
Cs137 7.9 Bq/kg raw
Tomioka,Futaba,
Cedar leaf①
Jan-21
Fukushima
Bq/kg
raw
Bq/kg
raw
Cs134 29.7
Cs134 7.5 Bq/kg raw± 7.7
Cs137 192.0 Bq/kg raw ± 38.0 Bq/kg raw
Cs137 7.6 Bq/kg raw
Tomioka,Futaba,
Cedar leaf②
Jan-21
Fukushima
Cs134
Cs134 6.8 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Cs137 676.5 Bq/kg dry ± 21.6 Bq/kg dry
Cs137 8.0 Bq/kg dry
Soil
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki(in the park)
Bq/kg
dry
Bq/kg
dry
Cs134 25.2
Cs134 8.7 Bq/kg dry± 5.3
Cs137 521.0 Bq/kg dry ± 53.9 Bq/kg dry
Cs137 2.7 Bq/kg dry
Soil
Izumigaoka-chuo Park
Dec-202
Izumigaoka,Iwaki(in the park)
Cs134 18.7 Bq/kg dry ± 2.5 Bq/kg dry
Cs134 2.6 Bq/kg dry
Cs137 235.0 Bq/kg dry ± 26.3 Bq/kg dry
Cs137 2.4 Bq/kg dry
Soil
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki(in the park)
Bq/kg
dry
Bq/kg
dry
Cs134 9.2
Cs134 2.9 Bq/kg dry± 2.4
Soil (in the park)
Cs137 57.5 Bq/kg dry ± 6.0 Bq/kg dry
Cs137 0.7 Bq/kg dry
Izumigaoka-chuo Park
under the Horizontal
Dec-202 Izumigaoka,Iwaki
bar
Cs134 1.5 Bq/kg dry ± 0.4 Bq/kg dry
Cs134 0.8 Bq/kg dry
Samples

602.7
192.0
701.7
539.7
244.2
59.0

※"＿" used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

3★Gamma-ray
Samples
Soil(in the park)
Soil(in the park)
under the slide

Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soill(in the park)
under the seesaw

Soil(in the park)
Soil(in the park)
Soil(in the park)
under the Swing

Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)
Soil(in the park)(Bq/kg raw:Weight of raw sample

Bq/kg dry:Weight of dried sample)

Sampling Point Sampling Month Measurement Result Uncertainty Total Amount of Cesium Minimum Limit of Detection
Cs137 48.5 Bq/kg dry ± 5.5 Bq/kg dry
Cs137 1.6 Bq/kg dry
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki
Bq/kg
dry
Bq/kg
dry
Cs134 2.0
Cs134 1.7 Bq/kg dry± 0.6
Cs137 45.8 Bq/kg dry ± 5.1 Bq/kg dry
Cs137 1.6 Bq/kg dry
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki
Cs134
Cs134 1.6 Bq/kg dry― Bq/kg dry ± ― Bq/kg dry
Cs137 33.8 Bq/kg dry ± 3.7 Bq/kg dry
Cs137 0.9 Bq/kg dry
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki
Bq/kg
dry
Bq/kg
dry
Cs134 1.5
Cs134 1.0 Bq/kg dry± 0.3
Cs137 11.0 Bq/kg dry ± 1.5 Bq/kg dry
Cs137 1.7 Bq/kg dry
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki
Cs134
Cs134 1.7 Bq/kg dry― Bq/kg dry ± ― Bq/kg dry
Cs137 10.8 Bq/kg dry ± 1.3 Bq/kg dry
Cs137 1.0 Bq/kg dry
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki
Bq/kg
dry
Bq/kg
dry
Cs134
Cs134 1.1 Bq/kg dry± ――Cs137 3.3 Bq/kg dry ± 0.6 Bq/kg dry
Cs137 1.4 Bq/kg dry
Izumigaoka-chuo Park
Dec-202 Izumigaoka,Iwaki
Cs134
Cs134 1.5 Bq/kg dry― Bq/kg dry ± ― Bq/kg dry
Under
Minimum
Cs137
Cs137 4.7 Bq/kg dry― Bq/kg dry ± ― Bq/kg dry
Izumigaoka-chuo Park
Limit ofDec-202 Izumigaoka,Iwaki
Bq/kg
dry
Bq/kg
dry
Cs134
Cs134 4.6 Bq/kg dry± ――Detection
Cs137― Bq/kg dry ± ― Bq/kg dry Under Minimum Cs137 2.1 Bq/kg dry
Izumigaoka-chuo Park
Limit ofDec-202 Izumigaoka,Iwaki
Cs134
Cs134 1.8 Bq/kg dry― Bq/kg dry ± ― Bq/kg dry
Detection
Izumigaoka-Nishi
Cs137 1370.0 Bq/kg dry ± 166.0 Bq/kg dry
Cs137 7.9 Bq/kg dryPark
Dec-20
Bq/kg
dry
Bq/kg
dry
Cs134 46.1
Cs134 9.2 Bq/kg dry± 15.5
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 446.0 Bq/kg dry ± 49.2 Bq/kg dry
Cs137 6.6 Bq/kg dryPark
Dec-20Cs134 19.5 Bq/kg dry ± 3.9 Bq/kg dry
Cs134 9.3 Bq/kg dry
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 393.0 Bq/kg dry ± 40.9 Bq/kg dry
Cs137 2.6 Bq/kg dryPark
Dec-20
Bq/kg
dry
Bq/kg
dry
Cs134 16.7
Cs134 3.2 Bq/kg dry± 2.5
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 376.0 Bq/kg dry ± 38.5 Bq/kg dry
Cs137 1.3 Bq/kg dryPark
Dec-20Cs134 15.5 Bq/kg dry ± 1.9 Bq/kg dry
Cs134 1.4 Bq/kg dry
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 334.0 Bq/kg dry ± 36.0 Bq/kg dry
Cs137 6.2 Bq/kg dryPark
Dec-20
Bq/kg
dry
Bq/kg
dry
Cs134 16.2
Cs134 7.5 Bq/kg dry± 2.9
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 208.0 Bq/kg dry ± 222.0 Bq/kg dry
Cs137 1.6 Bq/kg dryPark
Dec-20Cs134 17.6 Bq/kg dry ± 2.4 Bq/kg dry
Cs134 1.6 Bq/kg dry
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 144.0 Bq/kg dry ± 15.3 Bq/kg dry
Cs137 1.6 Bq/kg dryPark
Dec-20
Bq/kg
dry
Bq/kg
dry
Cs134 4.7
Cs134 1.8 Bq/kg dry± 0.8
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 135.0 Bq/kg dry ± 14.8 Bq/kg dry
Cs137 2.4 Bq/kg dryPark
Dec-20Cs134 3.5 Bq/kg dry ± 0.9 Bq/kg dry
Cs134 2.7 Bq/kg dry
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 82.5 Bq/kg dry ± 9.0 Bq/kg dry
Cs137 1.5 Bq/kg dryPark
Dec-20
Bq/kg
dry
Bq/kg
dry
Cs134 3.1
Cs134 1.6 Bq/kg dry± 0.7
2Izumigaoka,Iwaki
Izumigaoka-Nishi
Cs137 1430.0 Bq/kg dry ± 145.0 Bq/kg dry
Cs137 2.3 Bq/kg dryChildren's Park
Dec-202Izumigaoka,Iwaki
Cs134 57.9 Bq/kg dry ± 6.3 Bq/kg dry
Cs134 2.2 Bq/kg dry
Izumigaoka-Nishi
Cs137 1330.0 Bq/kg dry ± 136.0 Bq/kg dry
Cs137 3.7 Bq/kg dryChildren's Park
Dec-20
Bq/kg
dry
Bq/kg
dry
2Izumigaoka,Iwaki
Cs134 66.4
Cs134 4.2 Bq/kg dry± 7.8
Izumigaoka-Nishi
Cs137 564.0 Bq/kg dry ± 58.8 Bq/kg dry
Cs137 3.0 Bq/kg dryChildren's Park
Dec-202Izumigaoka,Iwaki
Cs134 21.7 Bq/kg dry ± 2.9 Bq/kg dry
Cs134 2.9 Bq/kg dry
Izumigaoka-Nishi
Cs137 548.0 Bq/kg dry ± 56.0 Bq/kg dry
Cs137 1.7 Bq/kg dryChildren's Park
Dec-20
Bq/kg
dry
Bq/kg
dry
2Izumigaoka,Iwaki
Cs134 22.7
Cs134 1.6 Bq/kg dry± 2.7
Izumigaoka-Nishi
Cs137 384.0 Bq/kg dry ± 39.4 Bq/kg dry
Cs137 1.5 Bq/kg dryChildren's Park
Dec-202Izumigaoka,Iwaki
Cs134 18.5 Bq/kg dry ± 1.7 Bq/kg dry
Cs134 1.5 Bq/kg dry
Izumigaoka-Nishi
Cs137 357.0 Bq/kg dry ± 37.2 Bq/kg dry
Cs137 2.7 Bq/kg dryChildren's Park
Dec-20
Bq/kg
dry
Bq/kg
dry
2Izumigaoka,Iwaki
Cs134 11.1
Cs134 3.5 Bq/kg dry± 2.2
Izumigaoka-Nishi
Cs137 253.0 Bq/kg dry ± 26.8 Bq/kg dry
Cs137 2.3 Bq/kg dryChildren's Park
Dec-202Izumigaoka,Iwaki
Cs134 11.3 Bq/kg dry ± 1.8 Bq/kg dry
Cs134 2.4 Bq/kg dry

50.5
45.8
35.3
11.0
10.8
3.3

1416.1
465.5
409.7
391.5
350.2
225.6
148.7
138.5
85.6

1487.91396.4
585.7
570.7
402.5
368.1
264.3

※"＿" used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

4★Gamma-ray(Bq/kg raw:Weight of raw sample

Samples

Sampling Point

Soil(in the park)

Izumigaoka-Nishi
Children's Park
2Izumigaoka,Iwaki

Kagita Kusushimae
Soil
Park
(in the park)
Kubo,Kashima,Iwaki
Kagita Kusushimae
Soil
Park
(in the park)
Kubo,Kashima,Iwaki
Kagita Kusushimae
Soil
Park
(in the park)
Kubo,Kashima,Iwaki
Soil (in the park) Kagita Kusushimae
under thePark
Horizontal bar
Kubo,Kashima,Iwaki
Soil (in the park) Kagita Kusushimae
under thePark
Horizontal bar
Kubo,Kashima,Iwaki
Kagita Kusushimae
Soil
Park
(in the park)
Kubo,Kashima,Iwaki
Kagita Kusushimae
Soil(in the park)
under thePark
Rest room
Kubo,Kashima,Iwaki
Soil
Kagita Kusushimae(in the park)Park
under the slide
Kubo,Kashima,Iwaki
Kagita Kusushimae
Soil
Park
(in the park)
Kubo,Kashima,Iwaki
Soil
Kagita Kusushimae(in the park)
Park
SandboxKubo,Kashima,Iwaki

Sampling Month MeasurementDec-20Jan-21
Jan-21
Jan-21
Jan-21
Jan-21
Jan-21
Jan-21
Jan-21
Jan-21
Jan-21

Soil(in the park)

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21

Soil(in the park)

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21

Soil(in the park)

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21

Soil(in the park)

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21

Soil(in the park)
under the slide
Soil(in the park)
under the slide
Soil(in the park)
SandboxSoil(in the park)
under the Swing

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21

Hashiriguma Park
1Chuodaikashima,
Iwaki

Jan-21Result Uncertainty
Bq/kg dry

± 15.3

Bq/kg dry

Bq/kg dry

± 1.4

Bq/kg dry

Bq/kg dry

± 80.3

Bq/kg dry

Bq/kg dry

± 3.4

Bq/kg dry

Bq/kg dry

± 73.6

Bq/kg dry

Bq/kg dry

± 3.1

Bq/kg dry

Bq/kg dry

± 71.6

Bq/kg dry

Bq/kg dry

± 3.7

Bq/kg dry

Bq/kg dry

± 68.3

Bq/kg dry

Bq/kg dry

± 4.0

Bq/kg dry

Bq/kg dry

± 60.3

Bq/kg dry

Bq/kg dry

± 3.3

Bq/kg dry

Bq/kg dry

± 51.3

Bq/kg dry

Bq/kg dry

± 2.0

Bq/kg dry

Bq/kg dry

± 38.9Bq/kg dryCs134 13.0

Bq/kg dry

± 1.6

Bq/kg dryCs137 299.0

Bq/kg dry

± 31.2

Bq/kg dryCs134 12.5

Bq/kg dry

± 1.7

Bq/kg dryCs137 268.0

Bq/kg dry

± 28.1

Bq/kg dry

Bq/kg dry

± 1.4

Bq/kg dry

Bq/kg dry

± 21.3

Bq/kg dry

Bq/kg dry

± 1.0

Bq/kg dryCs137 1500.0

Bq/kg dry± 152.0

Bq/kg dryCs134 70.0

Bq/kg dry

± 7.5

Bq/kg dryCs137 758.0

Bq/kg dry

± 77.6

Bq/kg dryCs134 28.5

Bq/kg dry

± 3.4

Bq/kg dryCs137 531.0

Bq/kg dry

± 54.3

Bq/kg dryCs134 19.2

Bq/kg dry

± 2.3

Bq/kg dryCs137 448.0

Bq/kg dry

± 45.6

Bq/kg dryCs134 17.3

Bq/kg dry

± 2.2

Bq/kg dryCs137 445.0

Bq/kg dry

± 45.3

Bq/kg dryCs134 15.7

Bq/kg dry

± 1.8

Bq/kg dryCs137 418.0

Bq/kg dry

± 43.3

Bq/kg dryCs134 15.5

Bq/kg dry

± 2.0

Bq/kg dryCs137 51.2

Bq/kg dry

± 5.8

Bq/kg dry

Bq/kg dry

± 0.6

Bq/kg dry

Bq/kg dry

± 2.8

Bq/kg dry

Bq/kg dry±ー

Bq/kg dryCs137 141.0

7.1
Cs137 778.0
Cs134 26.9
Cs137 716.0
Cs134 25.8
Cs137 689.0
Cs134 28.2
Cs137 647.0
Cs134 31.8
Cs137 580.0
Cs134 27.9
Cs137 506.0
Cs134 17.2
Cs137 378.0
Cs134

9.5
Cs137 203.0
Cs134 6.4
Cs134

2.4
Cs137 24.0
Cs134
ー
Cs134

※"＿" used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

5

Bq/kg dry:Weight of dried sample)

Total Amount of Cesium Minimum Limit of Detection

148.1

Cs137

804.9

Cs137

741.8

Cs137

717.2

Cs137

678.8

Cs137

607.9

Cs137

523.2

Cs137

391.0

Cs137

311.5

Cs137

277.5

Cs137

209.4

Cs137

1570.0

Cs137

786.5

Cs137

550.2

Cs137

465.3

Cs137

460.7

Cs137

433.5

Cs137

53.6

Cs137

24.0

Cs137

Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134

2.2
3.0
2.6
2.5
2.4
2.1
3.5
3.5
4.1
4.0
2.7
2.5
1.2
1.1
1.6
1.6
1.8
1.9
2.0
2.1
1.6
1.8
2.2
2.0
2.2
2.1
1.5
1.5
1.4
1.7
1.1
1.0
2.0
2.0
1.6
1.7
1.4
1.4

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

Bq/kg dry

★Gamma-ray
Measuring instrument
Product of ATOMTEX AT1320A

ORTEC

FeatureNaI Scintillation Spectrometer
Product of BERTHOLD LB2045 ・Gamma-ray spectrometerwith NaI scintillation detector.

GEM30-70

Guide to lower limit※
Food（Sample 1㎏）Lower limit

1.0Bq/Kg

Soil（Sample 1㎏）Lower limit

2.5Bq/Kg

Material（Sample 1㎏） Lower limit

1.0Bq/Kg

Water（Sample 20L）
Lower limit

0.02Bq/L

Germanium Semiconductor detector
・Radioactivity measurement series.

Food（Sample 2㎏）Lower limit

0.04Bq/Kg

Quantitative analysis based on "Gamma-ray

Soil（Sample 1㎏）Lower limit

0.06Bq/Kg

spectrometry with germanium semiconductor detector."

Material（Sample 1㎏） Lower limit

0.06Bq/Kg

・Relative efficiency 35％

Water（Sample 20L）
Lower limit

0.001Bq/L※The lower limit varies depending on the sample weight and measurement time.

Measuring instrument:Germanium Semiconductor detector (Bq/kg raw:Weight of raw sample

Bq/kg dry:Weight of dried sample)

Sampling Point Sampling Month Measurement Result Uncertainty Total Amount of Cesium Minimum Limit of Detection
Cs137 1.0 Bq/kg raw ± 0.04 Bq/kg raw
Cs137 0.06 Bq/kg raw
Nihonmatsu,
Brown rice
Oct-20
Bq/kg
raw
Bq/kg
raw
Fukushima
Cs134
Cs134 0.06 Bq/kg raw± ――Cs137 0.2 Bq/kg raw ± 0.02 Bq/kg raw
Cs137 0.05 Bq/kg raw
Tairatakaku,
Brown rice
Oct-20
Iwaki
Cs134
Cs134 0.05 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Cs137 0.08 Bq/kg raw ± 0.02 Bq/kg raw
Cs137 0.04 Bq/kg raw
Tairatakaku,
Rice
Oct-20
Bq/kg
raw
Bq/kg
raw
Iwaki
Cs134
Cs134 0.04 Bq/kg raw
± ―
―
Cs137
― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 0.07 Bq/kg raw
Takahama,Oi,
Limit of
Brown rice
Oct-20
Fukui
Cs134
Cs134 0.08 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 0.07 Bq/kg raw
Limit of
Brown rice
Oi,Oi,Fukui
Oct-20
Cs134
Cs134 0.08 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 0.7 Bq/kg raw± ――Fushiguro,Date,
Limit of
Seed rice
Oct-20Fukushima
Cs134
Cs134 0.8 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137 1.4 Bq/kg raw ± 0.5 Bq/kg raw
Cs137 1.0 Bq/kg raw
Fushiguro,Date,
Bay leaf
Oct-20Fukushima
Cs134
Cs134 1.2 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Cs137 2.4 Bq/kg raw ± 0.2 Bq/kg raw
Cs137 0.5 Bq/kg raw
Bamboo shoot
Fukushima,
May-19
Bq/kg
raw
Bq/kg
raw
(boiled)Fukushima
Cs134
Cs134 0.9 Bq/kg raw± ――Cs137 1.2 Bq/kg raw ± 0.2 Bq/kg raw
Cs137 0.5 Bq/kg raw
Henon bamboo
Fukushima,
May-20(boiled)Fukushima
Cs134
Cs134 0.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Cs137 3.4 Bq/kg raw ± 0.4 Bq/kg raw
Cs137 0.4 Bq/kg raw
Shitake mushroom
Date,Fukushima Nov-20
grown in log
Bq/kg
raw
Bq/kg
raw
Cs134
Cs134 0.6 Bq/kg raw± ――Shitake mushroom
Hanawa,HigashiCs137 12.5 Bq/kg raw ± 0.2 Bq/kg raw
Cs137 0.1 Bq/kg raw
grown inshirakawa,
Nov-20Cs134 0.7 Bq/kg raw ± 0.09 Bq/kg raw
Cs134 0.1 Bq/kg raw
bacteria-bed
Fukushima
Cs137 15.2 Bq/kg raw ± 0.6 Bq/kg raw
Cs137 0.8 Bq/kg raw
Dried Sarcodon
China
Jan-21
aspratus muushroom
Cs134
Cs134 0.9 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Under
Minimum
Bq/kg
raw
Bq/kg
raw
Cs137
Cs137 0.2 Bq/kg raw± ――FukushimaRoundnose flounder
Limit ofJan-21(flesh・liver・egg)
Pref.
Cs134
Cs134 0.2 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Cs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 0.5 Bq/kg raw
Limit of
Brown hakeling
Aomori Pref.
Jan-21
Cs134
Cs134 0.7 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
Detection
Bq/kg
raw
Bq/kg
raw
Cs137 0.9
Cs137 0.1 Bq/kg raw± 0.06
Japanese sardine OnahamaPort/Iwaki
Oct-20(whole）
Cs134
Cs134 0.1 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw
CellanaCs137― Bq/kg raw ± ― Bq/kg raw Under Minimum Cs137 0.3 Bq/kg raw
TomiokaPort/
nigrolineata
Limit ofNov-20Fukushima
Cs134
Cs134 0.3 Bq/kg raw― Bq/kg raw ± ― Bq/kg raw(shell)Detection
Cs137 1.3 Bq/kg raw ± 0.4 Bq/kg raw
Cs137 0.8 Bq/kg raw
Grasshoppers
Kashima,Iwaki
Jan-21
Bq/kg
raw
Bq/kg
raw
(boiled）
Cs134
Cs134 0.9 Bq/kg raw± ――Samples

1.0
0.2

0.08

1.4
2.4
1.2
3.4

13.2
15.2

0.9

1.3

※"_"used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

1

★Gamma-ray
Samples(Bq/kg raw:Weight of raw sample

Sampling Point

Sampling Month Measurement

Sweet potato
Jam

Chiba Pref.

Algae

Marumori,Igu,
Miyagi

Oct-20Ina,Nagano

Nov-20Ash(Wood-burning
stove)

Sep-20Scandinavia(production)

Aug-20

Sea water A(surface)

Off the coast of
Fukushima Nuclear
Power Plant1

Nov-20

Sea water A(lower)

Off the coast of
Fukushima Nuclear
Power Plant1

Nov-20

Sea water B(surface)

Off the coast of
Fukushima Nuclear
Power Plant1

Nov-20

Sea water B(lower)

Off the coast of
Fukushima Nuclear
Power Plant1

Nov-20

Sea water C(surface)

Off the coast of
Fukushima Nuclear
Power Plant1

Nov-20

Sea water C(lower)

Off the coast of
Fukushima Nuclear
Power Plant1

Nov-20

Sea water(surface)

TomiokaPort/
Fukushima

Nov-20

Sea water(lower)TomiokaPort/
Fukushima

Nov-20Wood powder

Carbon filter(water purifier)Iwaki cityOct-20Result Uncertainty

―
Cs134
―
Cs137 151.9
Cs134 7.8
Cs137 14.9
Cs134
―
Cs137
―
Cs134
―
Cs137 0.008
Cs134―
Cs137 0.012
Cs134―
Cs137 0.002
Cs134―
Cs137 0.003
Cs134―
Cs137 0.002
Cs134―
Cs137 0.063
Cs134 0.002
Cs137 0.015
Cs134―
Cs137 0.041
Cs134 0.002
Cs137
―
Cs134
―
Cs137

Bq/kg raw±

Bq/kg raw±

Bq/kg dry±

Bq/kg dry±

Bq/kg raw±

Bq/kg raw±

Bq/kg raw±

Bq/kg raw

±

―
―
1.4
0.6
0.9
―
―
―

Bq/kg raw
Bq/kg raw

Bq/kg dry

Bq/kg dry
Bq/kg raw
Bq/kg raw

Bq/kg raw
Bq/kg raw

2

Under Minimum
Limit of
Detection

Cs137

159.7

Cs137

14.9

Cs137

Under Minimum
Limit of
Detection

Cs137

Bq/L ± 0.0006 Bq/L
Bq/L ±

―

0.008
Bq/L

Bq/L ± 0.0006 Bq/L
Bq/L ±

―

0.012
Bq/L

Bq/L ± 0.0005 Bq/L
Bq/L ±

―

0.002
Bq/L

Bq/L ± 0.0005 Bq/L
Bq/L ±

―

0.003
Bq/L

Bq/L ± 0.0005 Bq/L
Bq/L ±

―

0.002
Bq/L

Bq/L ± 0.0010 Bq/L

―

±
±

―
―

Cs134

Bq/kg dry

Bq/kg dry
Bq/kg raw
Bq/kg raw

Bq/kg raw
Bq/kg raw

Cs137 0.0009 Bq/L
Cs134 0.001 Bq/L
Cs137 0.001 Bq/L
Cs134 0.001 Bq/L
Cs137 0.001 Bq/L
Cs134 0.001 Bq/L
Cs137 0.001 Bq/L
Cs134 0.001 Bq/L
Cs137 0.001 Bq/L
Cs134 0.001 Bq/L

Cs137 0.0009 Bq/L

Bq/L ± 0.0005 Bq/L
Bq/kg raw

Cs134

Bq/kg raw

0.015
Bq/L

Bq/L ± 0.0010 Bq/L
Bq/kg raw

Cs134

Bq/kg raw

Cs137 0.001 Bq/L

Bq/L ± 0.0007 Bq/L
Bq/L ±

Cs134

0.4
0.5
0.9
1.0
1.4
1.6
1.8
2.3

0.065

Bq/L ± 0.0004 Bq/L

Bq/kg raw

Bq/kg raw※"_"used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

Bq/kg dry:Weight of dried sample)

Total Amount of Cesium Minimum Limit of Detection

Cs134 0.001 Bq/L
Cs134 0.001 Bq/L

0.043

Cs137 0.001 Bq/L

Under Minimum
Limit of
Detection

Cs137

Cs134 0.001 Bq/L
Cs134

0.2
0.3

Bq/kg raw

Bq/kg raw

★Beta-ray
Measuring instrument
Liquid Scintillation Counter
Product of Hidex
HIDEX 300SLL

Product of PerkinElmer Japan
Quantulus GCT 622

FeatureEquipment for measuring low-energy
beta-ray emission nuclides
Measuring nuclide
Strontium90
Half-life 30 years
Organically bound 3H
Harf-life 12.3 years
Free-water 3H
Harf-life 12.3 years

All samples are measured in liquidcondition after several days of
pretreatment.
(Bq/Kg raw:Weight of raw sample

Samples

Sampling Point Sampling Month

Measurement Result
Under Minimum
Limit of
Detection
Under Minimum
T（Organic）
Limit of
Detection
Under Minimum
Limit of
Sr90
Detection

Brown rice

Ooi,Ooi,
Fukui

Oct-20Brown rice

Takahama,Ooi,
Fukui

Oct-20Lotus root

Tsuchiura,
IbarakiDec-20

Persimmon

Nogami,Okuma,
Futaba,Fukushima

Oct-18

Sr90

Persimmon

Nogami,Okuma,
Futaba,Fukushima

Oct-20

Sr90

Small sardines(head,bone)

OnahamaPort/Iwaki

Oct-20

Sr90

Oct-18Sr90

Oct-18Sr90

Oct-18

Sr90

Apr-19Sr90

Fox jacopever(whole)Fox jacopever(head,bone)

Shark(bone,skin)Black rockfish(whole)Off the coast of
Fukushima Nuclear
Power Plant 1
Off the coast of
Fukushima Nuclear
Power Plant 1
Off the coast of
Fukushima Nuclear
Power Plant 1
Off the coast of
Fukushima Nuclear
Power Plant 1T（Organic）

0.43
Under Minimum
Limit of
Detection
Under Minimum
Limit of
Detection
Under Minimum
Limit of
Detection
Under Minimum
Limit of
Detection
Under Minimum
Limit of
Detection
Under Minimum
Limit of
Detection
Under Minimum
Limit of
Detection

Bq/Kg dry:Weight of dried sample)

Uncertainty

Minimum Limit of Detection

Bq/kg dry±ー

Bq/kg dry

0.81

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.80

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.12

Bq/kg dry

Bq/kg dry

± 0.19Bq/kg dry

0.28

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.41

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.15

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.12

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.11

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.28

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

0.12

Bq/kg dry

Bq/kg dry±ー

Bq/kg dry

1.03

Bq/kg dryEgg(shell)

Yamaguchi
Pref.

Sep-20

Sr90

AshIna,Nagano

Nov-20

Sr90

216.51

Bq/kg dry

± 5.55

Bq/kg dry

1.41

Bq/kg dry

RiverwaterRiver Takase/
FukushimaOct-20Sr90

0.0009Bq/L± 0.0005

Bq/L

0.0007

Bq/L

RiverwaterRiver Abukuma/
Miyagi

Oct-20Sr90

0.0010

Bq/L± 0.0004

Bq/L

0.0006

Bq/L※"＿" used in Measurement Result and Uncertainty shows that the value is below the detection limit.
But it does not necessary mean 0(zero)Bq/kg.

.

Measurement results of 16 items by germanium semiconductor detector
Dr.Tetsuji Imanaka,Institute of Multiple Nuclear Science,Kyoto University

In order to convey more measurement results to everyone, we have asked Dr. Tetsuji Imanaka of theInstitute of Advanced Nuclear Science, Kyoto University, to measure low-dose samples using
germanium semiconductor detectors. Measurement samples are not only from Fukushima Prefecture but
also come from other prefectures. Please compare data based on measurements from various regions
and use them to protect your children from radiation exposure.

★Gamma-ray
Measuring instrument：Germanium Semiconductor detector

・Product of CANBERRA(CA),USA

GX3018Relative efficiency 30％ or more

・Product of ORTEC(OR),USA

GMX25－70

Relative efficiency 35％(Bq/kg raw:Weight of raw sample

Samples
Rice

Sampling Point Sampling Month
Fukushima Pref.

Oct-20

Naraha,Futaba,
FukushimaOct-20Hirono,Futaba,Fukushima

Oct-20

PotatoKatsurao,Futaba,
Fukushima

Nov-20

Persimmon

Kashima,Minamisoma,
FukushimaOct-20

Rice
Rice

Dried persimmon Aizu,Fukushima
CitronCitrus sudachiApple

Nov-20Kashima,Minamisoma,
Fukushima

Nov-20Tairashimokabeya,
Iwaki

Aug-20

Aomori Pref.

Nov-20Dried shiitake
mushroom

Minamisoma,
Fukushima

Sep-20Shitake mushroom
grown in bacteriabed

Iwaki city

Nov-20Wild sesame

Kashima,Minamisoma,
Fukushima

Nov-20Wild sesame
powderNamie,Futaba,
FukushimaOct-20

Sakhalin surfclamNamie,Futaba,
FukushimaOct-20

Mulberry

Onahama,Iwaki

Jun-20

Sasanqua

Chiba Pref.

Nov-20Measuring
instrument
type

OR
OR
OR
CA
CA
OR
OR
CA
OR
CA
CA
CA
CA
OR
CA
OR

Measurement Result

Uncertainty

Cs137 0.03

± 0.02

Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134
Cs137
Cs134

ー
0.4
―
0.9
―
0.5
―
1.4
―
―
―
3.9
0.2
0.1
―
―
―
10.5
―
17
0.05
0.8
―
2.6
―
1.7
―
0.7
―
1.6
―

Bq/kg raw―
± 0.04
Bq/kg raw
± ―Bq/kg raw
± 0.05
Bq/kg raw
± ―Bq/kg raw
± 0.05
Bq/kg raw
± ―Bq/kg raw
± 0.06
Bq/kg raw
± ―Bq/kg raw
± ―Bq/kg raw
± ―Bq/kg raw
± 0.09Bq/kg raw
± 0.03
Bq/kg raw
± 0.04
Bq/kg raw
± ―Bq/kg raw
± ―Bq/kg raw
± ―Bq/kg raw
± 1.0
Bq/kg raw
± ―Bq/kg raw
± 0.6
Bq/kg raw
± 0.02
Bq/kg raw
± 0.2
Bq/kg raw
± ―Bq/kg raw
± 0.4
Bq/kg raw
± ―Bq/kg raw
± 0.1
Bq/kg raw
± ―Bq/kg raw
± 0.2
Bq/kg raw
± ―Bq/kg raw
± 0.4
Bq/kg raw
± ―Bq/kg raw
Bq/kg raw※"＿" used in Measurement Result and Uncertainty shows that the value is below the detection limit.

But it does not necessary mean 0(zero)Bq/kg.

1±

Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw

Bq/kg dry:Weight of dried sample)

Total Amount of Cesium Minimum Limit of Detection

0.03

Cs137

0.4

Cs137

0.9

Cs137

0.5

Cs137

1.4

Cs137

Under Minimum
Limit of
Detection

Cs137

4.1

Cs137

0.1

Cs137

Under Minimum
Limit of
Detection

Cs137

10.5

Cs137

17.05

Cs137

0.8

Cs137

2.6

Cs137

1.7

Cs137

0.7

Cs137

1.6

Cs137

Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134
Cs134

ー
ー
ー
ー
ー
ー
ー
ー
ー
ー
0.15
ー
ー
ー
ー
ー
0.2
ー
ー
ー
ー
ー
ー
ー
ー
ー
ー
ー
ー
ー
ー
ー

Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw
Bq/kg raw