http://ex-skf.blogspot.com/2012/03/fish-imported-from-japan-found-with.html
and...
The level [of plutonium-241] will not affect human health. Plutonium-241 has relatively short half life of 14 years compared to other isotopes of plutonium. It decays into americium-241, which is easily absorbed through soil into legumes. The NIRS says "To avoid internal radiation exposure, it is necessary to survey the spread of plutonium-241 inside the 20 kilometer zone around the plant." 昨年４～５月に採取した福島県飯舘村、浪江町の森林の落ち葉と、スポーツ施設で現在事故対応拠点となったＪヴィレッジ（広野町など）の土から検出。他の同位体プルトニウム２３９（半減期２万４千年）、２４０（同６６００年）も検出 、同位体の比率から今回の事故が原因と分かった。
and...
finally.... go back to sleep Japan
Fish Imported from Japan Found with Radioactive Cesium in South Korea
From TBS News (3/9/2012):
and....韓国、日本産水産物 セシウム検出増える
South Korea finding more marine products from Japan with radioactive cesium
韓国に輸入された日本産の水産物から、放射性物質が検出されるケースが増加していることが分かりました。ただ、いずれも基準値以下のため、市場に流通しています。
It has been revealed that an increasing number of marine products from Japan imported to South Korea have been found with radioactive materials. Since the levels are below the safety limits, they are being sold in the marketplace.
韓国の農林水産食品省は８日、輸入された日本産の水産物から、放射性物質のセシウムが検出されるケースが増加していると発表しました。
South Korea's Ministry of Agriculture, Forestry, Fisheries and Food announced on March 8 that an increasing number of marine products imported to South Korea from Japan have been found with radioactive cesium.
日本から輸入された水産物について、韓国政府は出荷する際に日本で行われる放射能検査とは別に、独自に検査を行っています。
The South Korean government conducts its own test of marine products imported from Japan, aside from the radiation test in Japan [by the Japanese authorities] at the time of shipment.
セシウムが検出されたのは、サバやスケトウダラなどで、去年４月から１１月までの８か月間は１３件でしたが、去年１２月以降急増し、２月までの３か月間だけで４０件に上っています。
Radioactive cesium was found in mackerels and Alaska pollock. There were 13 cases of cesium detection in 8 months from April to November last year, but the number significantly increased from December onward. There are 40 cases of cesium detection in 3 months from December to February this year. ほとんどが１キロあたり７ベクレル以下でしたが、最大９７．９ベクレル検出されたケースもありました。ただ、いずれも韓国の安全基準値を下回る数値だったことから、市場に流通しています。
In most cases, the radioactive density was 7 becquerels/kg or less. The maximum was 97.9 becquerels/kg. Since they are all below the safety limit of South Korea, they have been sold in the market.
3.43 Million Bq/Kg of Radioactive Cesium in "Black Dust" in Minami Soma City, Fukushima
Whatever this substance is, the number is extremely high.
About this "black dust" in Minami Soma, see my past posts, here, here, here.
Minami Soma City's Assemblyman Ooyama reports on his blog (3/8/2012):
About this "black dust" in Minami Soma, see my past posts, here, here, here.
Minami Soma City's Assemblyman Ooyama reports on his blog (3/8/2012):
試料：ID:080 鹿島区ジサ原C
Cs-134 1,498,000 ± 1,586 Bq/kg
Cs-137 1,932,900 ± 2,481 Bq/kg
TOTAL 3,430,900± 2,945 Bq/kg
It seems to be part of the report by Professor Tomoya Yamauchi of Kobe University who did the measurement. Mr. Ooyama lists the result of 11 samples tested by Professor Yamauchi.
The NGO in Minami Soma, HCR, seems to have some kind of a fallout with the assemblyman's volunteer group over the "black dust", and they've been making rather wild announcements (telling residents that the black dust was plutonium, when there was no alpha emission was detected, for example). I am still trying to get the overall picture on this matter.
The NGO in Minami Soma, HCR, seems to have some kind of a fallout with the assemblyman's volunteer group over the "black dust", and they've been making rather wild announcements (telling residents that the black dust was plutonium, when there was no alpha emission was detected, for example). I am still trying to get the overall picture on this matter.
and...
Plutonium-241 of Fukushima Origin Found 32 Kilometers from the Plant, Says National Institute of Radiological Sciences After Nearly One Year
The National Institute of Radiological Sciences (NIRS) knew about it since May last year, but decided to keep quiet. Why? It's yet another case of the researchers waiting until their data collection is published in a peer-review scientific magazine (the paper is linked at the bottom of the post).
For the NIRS researchers, their data has just been published in the UK's Scientific Reports (electronic version), reports Kyodo News (3/8/2012):
For the NIRS researchers, their data has just been published in the UK's Scientific Reports (electronic version), reports Kyodo News (3/8/2012):
放射線医学総合研究所（千葉市）は、東京電力福島第１原発から北西や南に２０～３２キロ離れた福島県内の３地点で、事故で放出されたとみられるプルトニウム２４１を初めて検出したと、８日付の英科学誌「サイエンティフィック・リポーツ」の電子版に発表した。
The National Institute of Radiological Sciences (NIRS, in Chiba City, Chiba) published the result of their measurement of plutonium-241 at three locations in Fukushima Prefecture 20 to 32 kilometers northwest and south of Fukushima I Nuclear Power Plant in the electronic version of the UK's science magazine "Scientific Reports" issued on March 8, 2012.
人体に影響のないレベルだが、プルトニウム２４１は他の同位体に比べて半減期が１４年と比較的短く、崩壊してできるアメリシウム２４１は土壌を経由して主に豆類に取り込まれやすい。放医研は「内部被ばくを避けるためにも 原発２０キロ圏内での分布状況を確かめる必要がある」としている。
[Plutonium-241] was detected from the samples they collected in April and May last year - the dead leaves from the forests in Iitate-mura and Namie-machi, and the soil at J-village, which has been used as the staging area for the work after the Fukushima I Nuke Plant accident. Other isotopes of plutonium, plutonium-239 (half life 24,000 years) and plutonium-240 (half life 6,600 years), were also detected. From the ratio of isotopes, the NIRS researchers concluded that they were from the Fukushima nuclear accident.
濃度は、過去に行われた大気圏内核実験の影響により国内で検出されるプルトニウム２４１よりも高い。ただ半減期が短く、１９６０年代当時に核実験で飛来した濃度よりは低いレベルという。
The density of plutonium-241 [detected this time] is higher than that being detected in Japan after the atmospheric nuclear tests in the past. However, plutonium-241 has a short half life, and the density is lower than that during the 1960s when the radioactive fallout from the nuclear tests fell on Japan.
プルトニウムは天然にはほとんど存在しない放射性物質で、原子炉では燃料のウランが中性子を吸収してできる。
Plutonium is a radionuclide that hardly exists in nature. It is created when uranium in the reactor fuel absorbs neutrons.
Hmmm. If you want to avoid internal radiation exposure by ingesting food that may contain americium-241, a decay product of plutonium-241, don't you want to survey the area outside the 20 kilometer zone? After all, outside the 20 kilometer zone, Fukushima farmers will be tilling the land, ready to grow crops of all kinds again this year.
Half life of americium-241 is 432.7 years. As it decays, americium-241 emits alpha and gamma rays.
Asahi Shinbun has the numbers for plutonium-241:
Half life of americium-241 is 432.7 years. As it decays, americium-241 emits alpha and gamma rays.
Asahi Shinbun has the numbers for plutonium-241:
- Dead leaves in Namie-machi (26 kilometers NW of the plant): 34.8 becquerels/kg
- Dead leaves in Iitate-mura (32 kilometers NW of the plant): 20.2 becquerels/kg
- Soil at J-Village (20 kilometer south of the plant: 4.52 becquerels/kg
Farmers in Fukushima, are you still going to grow stuff on your land?
Researchers at the NIRS, did you think of at least informally telling the local authorities or the farmers about your findings? Or did you just sit and wait until your paper was published by a peer-review magazine?
(I know I'm wasting my breath.)Researchers at the NIRS, did you think of at least informally telling the local authorities or the farmers about your findings? Or did you just sit and wait until your paper was published by a peer-review magazine?
and...
“Support by eating” campaign caused children internal exposure
Posted by Mochizuki on March 8th, 2012 · No Comments
Following up this article..13 of 21 children had urine test positive
The citizen’s group “Association to think about aging Fukushima plants”held a press conference on 3/7/2012, announced the lowest reading was 0.79 Bq/L (Cesium 134 + 137) of a 9 years old boy living in Miyagi, and the highest reading was 3.89 Bq/L of a 17 years old boy in Fukushima.
A 4 years old boy in Chiba was positive too (1.47 Bq/L) to prove the distance from the Fukushima plants have nothing to do with internal exposure.
A 4 years old boy in Chiba was positive too (1.47 Bq/L) to prove the distance from the Fukushima plants have nothing to do with internal exposure.
From their hearing research, those children who had cesium measured from urine turned out to have eaten local vegetables or domestic farming vegetables. After they changed it to vegetables from western Japan or Hokkaido, the cesium amount decreased drastically.
検出されたセシウム134、137の合計中、最小値は宮城県伊具郡９歳男児の0.79ベクレル/ℓ で、最大値は福島県福島市17歳男子の3.89ベクレル/ℓ 。（ACROの検出限界は0・3ベクレル/ℓ）
ホットスポットの千葉県柏市では4歳の子供の尿から1・47ベクレル/ℓが検出されている。福島第一原発からの距離と空間線量がすべてではないことがわかる。
『同測定プロジェクト』の聞き取り調査によると、セシウムが検出された子供たちは地元産や自家農園の野菜を食べていた。西日本や北海道で取れた野菜に切り替えたところ、セシウムは激減した。食生活パターンの改善である程度内部被曝を減らすことができるという。
finally.... go back to sleep Japan
Tritium leakage is increasing
Posted by Mochizuki on March 8th, 2012 · No Comments
According to Tepco’s announcement, tritium amount in intake is increasing.
Tepco monthly publish the data of radiation leakage to the sea water inside of intake.
Though other nuclides, such as cesium 134 / 137 and strontium 89 / 90, are in the decreasing trend, tritium is still leaking about 3 ~ 7 times much as cesium 137.
Tritium is beta nuclide. It acts exactly like H2O, you can never filter it out. It’s in tap water, shower, and rain, etc.
Though massive amount of tritium is assumed to have leaked, nobody has measured it from food, environment, and even from urin.
Even if you take care about cesium in food, you can’t escape from tritium.
(H-3 = Tritium)
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