论文部分内容阅读
磷尾矿中稀土元素含量是解释矿物的形成和发展的最好工具,所以准确测定其含量意义很大,磷尾矿成分复杂、干扰元素多、必须采取化学分离才能测定14个稀土元素。分离存在手续复杂、消耗时间长以及洗脱体积大等缺点。本文着重研究了用化学分离去干扰元素进行稀土元素的测定。称20-25mg样品与待测元素标准包装好后在热中子通量为(3—5)×10~(13)n/cm~2·s下辐照20小时。样品辐照后定量转移到白金坩埚中加载体、混酸溶解蒸发近干,加
The content of rare earth elements in phosphorus tailings is the best tool to explain the formation and development of minerals. Therefore, it is very meaningful to accurately measure the content of rare earth elements. The composition of phosphorus tailings is complex and there are many interfering elements. Therefore, 14 rare earth elements must be determined by chemical separation. Separated exist complex procedures, long time consumption and elution volume and other shortcomings. This article focuses on the use of chemical separation to interfere with the determination of rare earth elements. Weigh 20-25mg samples and the test element standard packaging, the thermal neutron flux of (3-5) × 10 ~ (13) n / cm ~ 2 · s for 20 hours. Quantitative transfer of the sample after irradiation to platinum crucible in the carrier, mixed acid dissolved evaporation nearly dry, add