Radioactive contamination of the sea of Fukushima is probably just a local problem, but could a zone, if there is a major release of long-term pollutants, the scientists say.
So far, the largest polluter has been marked by Japanese officials radioactive iodine-131.
Samples of water taken, the plant have been near as high as 1,850 times of the permitted are fallen back of iodine, but levels, Japanese officials said Tuesday.
Radioactive iodine capture due to algae, which easily absorbs this element of the marine food chain.
"The possibility, if you talk about certain types of seafood, you can Reconcentration,", said Ed Lyman of the Union of concerned scientists (UCS), a prestigious US NGOs, focusing on nuclear safety.
"Even dilute levels of contamination in certain marine life can be improved so that you know how focused mercury in large fish such as tuna." "Plants such as algae is known that certain isotopes focus, and so are certain types of shellfish."
Radioactive elements are dangerous in food because if taken their radiation can in cells, with the potential, DNA damage cause cancer.
The contamination by iodine-131 is only short-lived, as the element a half-life-the pace has where it half of its Radioaktivit?t--loses just eight days.
"This means that after a few months it harmless, in fact,", said Simon Boxall, lecturer at the British National Oceanography Centre at the University of Southampton, southern England, early action, to stop disaster fishing around the plant after the March 11 praised.
"What concerns me more is if cesium and plutonium in the system", he said, on two radioactive heavy metals, whose half-lives are about 30 years and potentially thousands of years or.
"This is more than, since that can build in the sediments" of the seabed in Fukushima, Boxall said.
At a high level, this could be the introduction of a zone of catches of fish, and which was seafood, a measure "Years and years" most recently, he said.
"It's hard to know (how long) until they start the measurements and determine how big is the pollution."
"You would fish period basically not in a zone." "And Furthermore, the exclusion zone there is an additional zone, where they come from time to time and see whether it radioactivity."
Fukushima plant operators, the co. which reported on the Saturday Tokyo electric power (TEPCO), levels of caesium almost 80 times the legal maximum. On Monday, he also said that plutonium, to very low and harmless was found levels, at five locations in the soil in the plant.
Given the magnitude of the Pacific-world's vastest body of Wassers--radioactivity in the sea at Fukushima is flushed from the local area of currents and tides, and on very low dilute, Boxall said.
"Get it in the food chain (Ocean), but only in the environment," he said. "People in Hawaii and California must be worried?" The answer is not. "
The Pacific, thanks to its size is one of the cleanest seas in the world for radioactive contamination, according to the Woods Hole Oceanographic Institution in Massachusetts.
1990 Radiation in the North Pacific surface was four becquerels of cesium 137 per cubic meter, it was while 1.6 Bq/m3, in the South Pacific it says. Most of them came from atmospheric nuclear tests before these blasts were finished.
The most polluted seas were the Baltic Sea hit by fallout from Chernobyl, 1986, 125 Bq/m3; the Irish Sea, with 55 Bq/m3 of radioactive releases from the British Sellafield plant due to; and the Black Sea, also contaminated by Chernobyl, with 52 Bq/m3.
Compared to the set of the US Environmental Protection Agency (EPA) maximum of 3,700 Bq/m3 in the caesium in drinking water.
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