【摘要】 用 Fe( OH) 3共沉淀淡水样中的铀和钍 ,经硝酸溶解后 ,用 2 3 5 N-环己烷萃取铀钍 ,在盐酸介质中用分光光度法分别测定飞来峡水库水样铀、钍的含量。结果表明 ,铀、钍的回收率稳定在 80 %以上 ,方法稳定可靠 ;飞来峡水利枢纽建成后库区水体中铀、钍的含量维持在以前的水平。更多还原

【Abstract】 U and Th in fresh water from Feilaixia Reservoir were co precipitated with Fe(OH) 3, dissolved by HNO 3, extracted by 235 N cyclohexane,and determined by Spectrophotometric Method.The results showed that the recoveries of U and Th were above 80%.The method is stable and reliable.There was no change in contents of U and Th in water samples compared with the results before the project.更多还原