CAJ | 학술논문

通过盐酸浸出、草酸沉淀、高温灼烧、硝酸溶解、P204萃淋树脂分离富集、硫化钠沉淀除铋，可以实现土壤中90 Sr、90 Y的分离与富集。试验结果表明：用二水合柠檬酸三钠和草酸沉淀90 Sr、90 Y ，沉淀率分别为76．4％和99．8％；在溶液 pH＝0．1、流速为2．0 mL/min、树脂质量为10 g条件下吸附90 Sr、90 Y ，然后用6 mol/L HNO3溶液80 mL以0．5 mL/min速度解吸，90 Sr、90 Y得以快速分离。该法简单，快速，成本低。
통과염산침출、초산침정、고온작소、초산용해、P204췌림수지분리부집、류화납침정제필，가이실현토양중90 Sr、90 Y적분리여부집。시험결과표명：용이수합저몽산삼납화초산침정90 Sr、90 Y ，침정솔분별위76．4％화99．8％；재용액 pH＝0．1、류속위2．0 mL/min、수지질량위10 g조건하흡부90 Sr、90 Y ，연후용6 mol/L HNO3용액80 mL이0．5 mL/min속도해흡，90 Sr、90 Y득이쾌속분리。해법간단，쾌속，성본저。
Separation and Enrichment of 90 Sr and 90 Y from soil can be realized by hydrochloric acid leaching ,oxalate precipitation ,burning at high temperature ,dissolving using nitric acid ,separation and enrichment by extraction chromatography using P204 and precipitating bismuth using sodium sulfide . The experimental results show that 90 Sr and 90 Y are precipitated by trisodium citrate dihydrate and oxalic acid , the precipitation rate are 76 .4% and 99 .8% ,respectively .T he pH of solution for absorption 90 Y is 0 .1 ,the absorption speed is 2 .0 mL/min ,the mass of resin is 10 g ,the volume of 6 mol/L nitric acid solution is 80 mL ,the elution speed for 90 Y is 0 .5 mL/min .The speed of separation90 Sr and 90 Y is rapid .T his method is simple ,fast and low cost .