【摘要】 本文研究了用镍片从盐酸介质中定量沉积²¹⁰Bi 后,将介质转化为硝酸,以硼酸掩蔽氟用TOPO 萃取分离测定铀、钍和镭的联合分折方法;讨论了分离测定的最佳条件和干扰离子的影响。本方法对铀和钍的回收率大于90%,对镭和铅-210大于80%。更多还原

【Abstract】 A method for simultaneous determination of U,Th,Ra and Pb-210 is described.Bi was determined by selective,quantitative depositionon Ni foil from aqueous solution.Using TOPO as soluent for extractionseparation in nitric acid,U,Th and Ra could be determined simultaneouslyin one sample.The interference of F^- was masked with H₃BO₃.The optimumconditions for separation and the influence of interference ions are discuss-ed.The recoueries of U and Th are greater than 90%,and that of Ra andPb-210 grester than 80%.更多还原