The long-term influence of nuclear radiation can't be ignored

The long-term influence of nuclear radiation can't be ignored
The long-term influence of nuclear radiation can't be ignored
Japan grows and works and saves for the 23rd and announces thick, the radioactive material detected in 11 kinds of vegetables such as cabbage which Fukushima county produces, cauliflower,etc. exceeds the tentative basis presumed in Japan " food hygiene law " greatly. Province call upon people eat these vegetables temporarily already at present. In addition including Tokyo the intersection of Japan and 12 running water of county detect into the radioactive material too. According to the explanation of Japanese Government, the intensity to the food pollution of this nuclear accident is not big, will not influence people's health. Because detected the radioactive material largest vegetables if eat 100 grams 10 days every day continuously, the radiation quantity received is equivalent to that a person will receive half of radiation quantity in the natural situation next year. However, this time the negative effect of nuclear radiation that Japan's nuclear accident leaves over needs observing, making investigations for a long time, could find out the long-term influence on the mankind, living beings and environment of nuclear radiation. And need to hold the prudent method at the present stage. In view of the public's health problem in the future, American food medicine administration bureau (FDA) Announce on March 22, it is imported to suspend from this day and come from the agricultural products made in nearby of letting out area of core of Fukushima of Japan. On the other hand, the nuclear radiation of products such as the food,etc. is controlled and still need to expand to the intravital living beings, such as fish and alga in the sea. Though Shanghai has held " The nuclear leakage of Fukushima influences the aquatic products in Shanghai safely " Thematic for forum,and researchers marine point out whether fish migration at water body polluted by nuclear radiation to go states of the Huanghai Sea easts of our country to will present Fukushima nearby, however, need to go on to controlling by the fish that nuclear radiation influence for a long time. This kind of method is undoubtedly to set up a fire wall to public health. This kind of method is what World Health Organization advocates too. Hartel, spokesman of WHO, said a few days ago, Japanese Government must make the decision as soon as possible, blockading them thinks the area that may be influenced, totally forbid people to eat the food of these areas at the same time. Eat some food any more repeatedly, may improve the damaged risk of the health. Endangered and depends on the kind of the food, nuclear radiation amount included of soil, food of the planting food to health by the food of nuclear pollution, and the quantity eaten, but if delay taking action, let consumers eat any more and receive the food of nuclear radiation, may constitute serious threat to health, moreover, the influence that children receive is especially great. In this respect, cut the promise Pele's lesson is worth drawing. After the cutting Pele's nuclear disaster of the promise of 1986 takes place, the Russian government at that time did not prevent the children of the surrounding area from drinking the milk, the result leads to the fact a large number of cases of thyroid gland cancer appeared later in the locality. In terms of danger of nuclear radiation healthy to people, food, water and milk of the air and ingestion pollution which suck pollution are the most important radiating the route. Because is to breathe and eat various food that the �� particle of radiation enters the internal main route in leading to the fact. So, the prevention against food, drinking water should be a focal point. On the other hand, the influence of radiation still depends on the half-life of the nuclear material, it is that the long-term radiation of the nuclear material influences too after all. Though according to Japanese Government, the nuclear radiation that is monitored now is not big in pollution, however, the long-term influence of low dose of nuclear radiation injure and ignore people's health either. Moreover, nuclear radiation is studied now and does not deepen about people's healthy influence, some results can only depend on inferring at present, so need to be set about keeping a lookout from harm the most. For example, the nuclear material has half-life, there is the atomic nucleus which refers to the radioactive element half happens for time required to decay. The greater danger to the environment and what the living beings cause the longer radioactive element is in half-life. Though relatively short in radioactive half-life in 131 iodine, have only 8.5 day, radioactive cesium, strontium, plutonium element extremely remote to pollution that environment lead to the fact. Half-life of cesium 137 was 30, strontium 90 half-life was 28.5. Plutonium is a natural heaviest element of quality that exists in the nature. Its most stable isotope is plutonium 244, half-life was about 80 million, can nearly exist in the natural environment forever. The plutonium most important isotope is plutonium 239, half-life was 24,100, is often used to make nuclear weapons. Half-life of 238 of plutonium was 88, and can emit the �� particle of radiation while causing. Even a shorter nuclear material in half-life, such as the iodine 131, do not mean either it is not dangerous to the person's health, can only have been already reduced by half people and biological danger after thinking they have reached half-life briefly, but endanger existing to people's radiation really. In addition, because there is not any nuclear radiation expert in Japan in World Health Organization at present, any situation is being assessed by Japanese Government, and is being done decision by Japanese Government, so, the international community needs to consider the question of nuclear radiation fully a little, in order to prevent future replying from making no adequate defense. For example, Japanese Government fixed the nuclear accident for 4 grades originally, but the state of affair later on developed more serious, so have to determine as more serious 5 grades again, it will be be this rank in the future, may still await the assessment of International Atomic Energy Agency. So, need long-term control to Japan's nuclear radiation accident, and do well and reply and prepare for serious injury even more.


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