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钷属稀土族元素,有17个放射性同位素,其中钷-147的毒理学意义最大。钷-147是核爆炸或反应堆中铀-235或钚-239核的裂变产物之一。在新鲜混合裂变产物中,钷-147约占0.4％,并随时间增长,所占份额相应增高,第一年占8.2％,第二年占20％~([1])。钷-147是纯β辐射体,β粒子的最大能量为0.233MeV(～100％),半衰期2.62年。由于钷-147放射毒性比镭-226小,近些年来大多采用它作为荧光涂料的激发能源,但也随之增加了钷-147进入人体的可能性。钷-147进入体内后,主要蓄积在含有网状内皮细胞的器官中,它在肝脏
钷 is a rare earth element, there are 17 radioisotopes, of which 钷 -147 most toxicologically.钷 -147 is one of the fission products of uranium-235 or plutonium-239 nuclei in nuclear explosions or reactors. In the fresh mixed fission products, 钷 -147 accounts for about 0.4%, and grows with time, a corresponding increase in the share of the first year accounted for 8.2%, the second year accounted for 20% ~ ([1]).钷 -147 is a pure beta radiator with a maximum energy of beta-particles of 0.233 MeV (~ 100%) and a half-life of 2.62 years. As 钷 -147 radiation toxicity than radium -226 small, in recent years mostly used as a fluorescent paint excitation energy, but also will increase 钷 -147 into the body’s possibility.钷 -147 into the body, the main accumulation in reticuloendothelial organs, which in the liver