2014/12/22 at 1:18 am
CANADA / JAPAN
17th December 2014 – 日本産原木干ししいたけ Japanese Dried Shiitake Mushroom
CANADA / JAPAN
15th December 2014 – 日本産かつお節 Japanese Bonito
10th December 2014 – Cs-134/137 detected double as food safety limit from water purification plant soil in Saitama.
The second highest Cs-134/137 density was 180 Bq/Kg. Cs-134/137 density exceeded the food safety limit at 3 of 5 prefectural water purification plants.
7th December 2014 – 4158 bq/kg Mushrooms Found In Tochigi Prefecture
Mushrooms from Tochigi prefecture tested and found to have 4158 bq/kg of cesium. The test was recently completed and shows that the problems of radioactive foods it not “over” and not isolated to Fukushima prefecture.
15th November 2014 – Fukushima health risks underestimated
For instance, one street in front of a hospital in Fukushima City “is quite contaminated”, Smitai said, measuring 1.1 microsieverts of radiation per hour. Although this was one of the highest readings, Greenpeace found 70 other places in the city where the amount of radiation recorded exceeded the Ministry of Environment’s long-term target of 0.23 microsieverts per hour.
Most of these areas therefore have “not been decontaminated, and cannot be decontaminated because, for instance, a forest can’t be decontaminated, practically speaking”, he added.
Critics, however, charge that these results were found by averaging the radiation measurements, meaning that individual “hot spots” such as those Greenpeace claims to have found could go unstated.
Submitted on 2014/11/14 at 8:37 pm
8th March 2012 – Isotopic evidence of plutonium release into the environment from the Fukushima DNPP accident
In addition, a more efficient transfer of 241Am into plants may be expected. A recent study showed that the coefficients of 241Am transfer from soil to wild plants28, particularly to legumes, are 3–5 times higher than those of 239,240Pu. Therefore, it is highly necessary to investigate the distribution and surface activity of 241Pu inside the 20 km zone, where much higher 241Pu could be expected. This is important for the long-term dose assessment of actinides, and will have important implications in the strategy for decontamination procedures.
For soil samples collected in Mito, Chiba, and Kamagaya Cities, although 137Cs activities were significantly higher than the activity level before the accident (Table 1), for example, the Kamagaya soil sample 2 (0–2 cm) collected on the grounds of a Japanese shrine, near the drain pipes from a building roof, had a 137Cs activity of 11429±88 mBq/g.
When reading these scientific documents they often use Becquerel per gram (Bq/g) measurements, so you need to multiply by a 1,000 to convert to Bq/kg.
8th November 2014 – Still 102,900 Bq/Kg of Cs-134/137 measured from Matsutake mushroom in Minamisoma city
From their latest report of September, 102,900 Bq/Kg of Cs-134/137 was measured from Matsutake mushroom. The city government reports it was collected for self-consumption, but the ratio of Cs-134 and Cs-137 was not announced.
12th October 2014 – Tritium up 10-fold in Fukushima groundwater after Typhoon Phanfone
Some 150,000 becquerels of tritium per liter were measured in a groundwater sample taken Thursday from a well east of the No. 2 reactor. The figure is a record for the well and over 10 times the level measured the previous week.
In addition, materials that emit beta rays, such as strontium-90, which causes bone cancer, also shattered records with a reading of 1.2 million becquerels, the utility said of the sample.
The well is close to the plant’s port in the Pacific.
18th September 2014 – Fukushima radiation damages rice genome
A study in the American Genetic Association’s Journal of Heredity examines the detailed genetic alterations of the all-important young rice plant when exposed to low-level radiation – that emitted by the Fukushima nuclear plant a year after the disaster.
Levels of Radioactive Contaminants in Foods Tested in Respective Prefectures, by the Japanese ministry of Health.
Here you will find the most recent and past, Japanese government food contamination test results.
2014/09/08 at 3:47 am
19th May 2013 – This video, is from rice produced in Fukushima Prefecture going to market at 11bq/kg Cesium, anything under 100bq/kg is considered safe by japan but scientist of Chernobyl say 16bq/kg should be the limit. This is alarming since they lifted the food restrictions on Fukushima grown rice Aug 2014.
2nd September 2014 – Mushroom contamination map shows contaminated products mainly consumed in Kanto area.
The online uncontaminated food distributer, “Whitefood” plotted the cases that MHLW detected Cesium-134/137 from a mushroom on Japanese map.
23rd August 2014 – S. Korea returned 20 t of Japanese marine products for Cs-134/137 contamination / Not from Fukushima area.
S. Korea banned imports from Fukushima prefecture and 7 adjacent prefectures last September, so this 20 t of returned marine products are not from the main contaminated regions in Japan.
7th August 2014 – “Radiation Fallout,” ABC Australian Catalyst program.
1. The program Highlights the Safecast public radiation monitoring program in Japan.
2. Researchers finding that decontamination efforts can sometimes create more contamination downstream, after snowfall and rain events.
3. Soil contamination levels do not reflect what food contamination levels can be, because different plants have different biological efficiencies in contamination uptake.
27th July 2014 – Cs-134 / 137 density jumped up 12 times much as previous highest reading in groundwater beside Reactor 2
Extract: See also.. 2,700,000,000 Bq/m3 of Strontium-90 measured from groundwater nearby Reactor 2 [URL 2]
Comment: A lot of this contamination is probably going to end up in the Pacific Ocean.
20th July 2014 – Over 1,000 Bq/Kg of I-131 measured from sewage sludge in Northern part of Fukushima prefecture
Their data shows I-131 started being detected on 6/12/2014. It kept being detectable since then and it reached the peak on 6/14/2014. The reading was 1,017.2 Bq/Kg.
20th July 2014 – 370 Bq/Kg of Cesium-134 / 137 from 5 ~ 6 km offshore Fukushima plant
Tepco reports it was fished approx. 4km offshore of Kumagawa-river. It is assumed to be 5~6 km from Fukushima plant port.
Also 178 Bq/Kg of Cesium-134/137 was measured from another Okamejei sample taken outside of Fukushima plant port.
14th July 2014 – Debris cleanup at Fukushima reactor may have contaminated rice crops.
Radioactive cesium exceeding the government limit of 100 becquerels per kilogram was detected in rice crops from Minamisoma, Fukushima Prefecture, last year, including areas located more than 20 km from the crippled nuclear plant.
A Tepco spokesman said the company does not deny the possibility that its cleanup work is to blame but added it isn’t clear whether that was the direct cause of the contamination.