ارتباط با ما
با ما تماس بگیرید
0086-21-58386256
0086-21-58386256
A fish living near the Fukushima Daiichi nuclear plant that melted down in 2011 was found to contain astronomical levels of radioactive cesium, stoking fears …Web
In June, 56 percent of Japanese fish catches tested by the Japanese government were contaminated with cesium-137 and -134. (Both are human-made radioactive isotopes—produced through nuclear ...Web
In 2011, the nuclear accident at Fukushima, Japan, resulted in the deposit of radioactive cesium (radiocesium) into habitats in the …Web
As expected, concentrations were higher in organisms sampled closer to shore. Radioactive silver (110m Ag) was also detected in all zooplankton samples. In all …Web
The "Caddisfly Watch" program proposes the use of larvae of the caddisfly genus Stenopsyche (Trichoptera: Stenopsychidae) to monitor the radioactive cesium (137Cs) pollution, including that of suspended solids, in river environments, as a simple method was essential for this following the Fukushima nuclear disaster in March 2011. A …Web
In particular, the data released show that the content of Cs-137, a radioactive element that is a common byproduct in nuclear reactors, is 180 times that of the standard maximum stipulated in Japan's food safety law. Screenshot of Tokyo Electric Power Company's report on the radioactive content in fish in the harbor of the Fukushima …Web
The initial cesium ratios in the atmospheric fallouts in each area from March to May in 2011 were calculated using data from the environmental radiation database. The proportions of cesium-137 (derived from the Fukushima nuclear reactor / total in the milk sample) were derived by calculating the measured value of cesium 134 concentration …Web
The world's biggest experimental nuclear fusion reactor in operation was inaugurated in Japan on Friday, a technology in its infancy but billed by some as the …Web
Four types of radioactive materials, Iodine-131, Cesium-134, Cesium-137, and Strontium-90, are the major concerns in relation to health and environmental effects of radioactive materials released into …Web
The authorities have used ALPS and other systems to remove some of the most hazardous isotopes, like cesium-137 and strontium-90. But there's a radioactive isotope that they cannot filter out ...Web
A number of fish species caught off the coast of the Fukushima Prefecture in 2011 and 2012 had levels of cesium contamination greater than Japan's regulatory limit for seafood (100 becquerels per ...Web
The release of radioisotopes from the Fukushima Dai-ichi nuclear power plant in March 2011 amounts to the largest-ever accidental release of radiation to the ocean. It came mostly in the form of iodine-131, cesium-134 and cesium-137, the primary radioisotopes released from the reactors, reported Ken Buesseler, a marine chemist at …Web
A fish living near drainage outlets at the Fukushima Daiichi nuclear power plant in May contained levels of radioactive cesium that are 180 times Japan's safety limit.. The black rockfish caught on 18 May was found by plant operator Tokyo Electric Power Company (Tepco) to have 18,000 becquerels per kilogram of cesium-137, compared …Web
Radioactive cesium from Japan's Fukushima nuclear disaster shows up in bluefin tuna off the California coast, offering researchers a way to follow the fish's migratory history By Marissa Fessenden ...Web
A 1999 study found that seals and porpoises in the Irish Sea concentrated radioactive cesium by a factor of 300 relative to its concentration in seawater, and a factor of 3 to 4 compared to the fish …Web
Claim: The first "radioactive salmon" attributed to the Fukushima nuclear disaster have been found in British Columbia, Canada, posing a risk to human health.
Radioactive removal Most radioactive radionuclides—including iodine 131 and cesium 134 and 137—can be removed from water. Others, such as tritium, a heavy form of hydrogen that is the most ...Web
That is a risk of one in a billion per Bq of ingested cesium-137. To keep the risk below 1x10-5 the consumer must limit his/her dietary intake to less than 10,000 Bq of cesium-137. Therefore this ...Web
The testing revealed very low levels of radioactive contamination, Osborn said, including cesium-134 at 5 becquerels (Bq) per kilogram (kg) in fish samples from 2015 and 2016. That amount falls ...Web
According to the Japanese news service, NHK, a recent sample also contained 1.1 million times the legal level of radioactive cesium-137. Studies from previous releases of nuclear material in the Irish, Kara and Barents Seas, as well as in the Pacific Ocean, show that such radioactive material does travel with ocean currents, is …Web
The Japanese government set provisional standard values for radioactive cesium (134/137 Cs) and iodine (131 I) in drinking water and food on March 17, 2011. These values were determined assuming a 5 mSv upper limit for annual radiation dose from drinking water and food and using intake estimates for Japanese consumers. ...Web
Workers in Japan have started releasing treated radioactive water from the Fukushima Daiichi nuclear power plant into the Pacific Ocean. The plant was destroyed in a 2011 earthquake and massive tsunami, and water has been accumulating ever since. ... like cesium-137 and strontium-90. But there's a radioactive isotope that they cannot filter …Web
Laboratories outside Japan have validated the results. ... its weekly inspections recorded nearly 700 samples of fishery products with a radioactive cesium concentration of over 100 Bq/kg compared ...Web
A large amount of radioactive Cs was released into the atmosphere as a result of the FDNPP accident in March 2011. Chino et al. [] estimated the total amount of released radioactive materials until April 2011, as follows: iodine-131 (131 I) was 1.5 × 10 17 Bq and 137 Cs was 1.2 × 10 16 Bq.On the other hand, Stohl et al. [] estimated the …Web
The IAEA, which has been supervising the clean-up and management of Fukushima, is expected to release a final report on the site and the plan for the wastewater release later in June. Nature 618 ...Web
The radiation dose to people is measured in sieverts, or millionths of sieverts (microsieverts), where a dose of 1,000 microsieverts represents a one in 25,000 chance of dying early from cancer.Web
The authorities have used ALPS and other systems to remove some of the most hazardous isotopes, like cesium-137 and strontium-90. But there's a radioactive …Web
The total amount of Fukushima-derived radioactive cesium released into the North Pacific via atmospheric deposition and direct release, spatial and temporal changes in the Pacific coast around the accident site, and the concentration levels of radioactive cesium around the Japanese Islands, not only the Pacific coast but also in adjacent seas ...Web
The plant operator, known as TEPCO, analyzed a black rockfish in May that was found to contain levels of radioactive cesium that were 180 times over Japan's regulatory limit, The Guardian reported . The fish was caught near drainage outlets at the plant, where three nuclear reactors melted down in March 2011 during a tsunami.Web
The Japanese government has conducted the monitoring research of radionuclides (131 I, 134 Cs and 137 Cs) in fishery products for food safety since March 2011 (Fig. 3.2) [].TEPCO also carried out the monitoring research of fishery products collected in the 20-km zone from FNPP and in the FNPP port [].By the end of January 2018, over …Web
FUKUSHIMA -- Radioactive cesium five times above permitted levels in Japan has been detected in black rockfish caught in northeastern Fukushima Prefecture, according to a Feb. 22 announcement by a ...Web
According to tests conducted by the Japanese government, some of the boars have shown levels of radioactive element cesium-137 that are 300 times higher than safety standards.Web
Some of the most abundant radionuclides released in the disaster were iodine-131, cesium-134 and cesium-137. All are potentially hazardous, but they decay at different rates. ... was below Japan's strict radiation limit of 100 Becquerels per kilogram. (The U.S. limit is 1200 becquerels per kilogram.) Since 2015, out of thousands of fish that ...Web
In April 2012 we carried out a 1-year hematological study on a population of wild Japanese monkeys inhabiting the forest area of Fukushima City. This area is located 70 km from the Fukushima ...Web
