CAJ | 학술논문

为了考察氚污染金属干法去污的去污效率，对氚污染不锈钢、铜和铝进行了紫外线、臭氧、加热及联合（紫外线、臭氧与加热）去污实验研究。研究结果表明：紫外线单独照射去污效率较差，加热可明显提高去污效率，500℃联合172 nm的紫外线去污4 h对不锈钢表面氚去污率可达99.2％；臭氧对铜有较好的去污效率，臭氧与加热（500℃）的组合对不锈钢、铝、铜的去污率均高于99.2％；高温（500℃）较低温（300℃）去污效率高；氚去污后金属放置30 d表面氚有所增加，主要是氚的扩散和渗透所致；氚污染不锈钢存在4种氚吸附态。
위료고찰천오염금속간법거오적거오효솔，대천오염불수강、동화려진행료자외선、취양、가열급연합（자외선、취양여가열）거오실험연구。연구결과표명：자외선단독조사거오효솔교차，가열가명현제고거오효솔，500℃연합172 nm적자외선거오4 h대불수강표면천거오솔가체99.2％；취양대동유교호적거오효솔，취양여가열（500℃）적조합대불수강、려、동적거오솔균고우99.2％；고온（500℃）교저온（300℃）거오효솔고；천거오후금속방치30 d표면천유소증가，주요시천적확산화삼투소치；천오염불수강존재4충천흡부태。
In order to study the decontamination efficiency of stainless steel ,copper , aluminum metals contaminated by tritium ,the metals were decontaminated by exposing to UV ,ozone ,heating ,and the combination of heating ,UV and ozone .The result indicates that the elevation of temperature can obviously improve decontamination . While irradiated by 172 nm UV ,the decontamination efficiency is low ,but it is better while heated and irradiated by 172 nm UV .If the stainless steel is irradiated by 172 nm UV and heated at 500 ℃ for 4 h ,the decontamination efficiency is 99.2% .There is better decontamination efficiency of copper while exposed to ozone .While exposed to ozone and heated at 500 ℃ ,the decontamination efficiencies of stainless steel ,copper and aluminum are higher than 99.2% . T he decontamination efficiency can more obviously improve w hen metal is heated at high temperature (500 ℃ ) than low temperature (300 ℃) .The surface tritium of metal placed at 30 d after decontamination increases because of diffusion and penetration of the tritium . Resolution spectra of tritium show that there are four kinds of contamination adsorbed tritium of stainless steel .