论文部分内容阅读
矿物中稀土元素的含量是研究矿物形成和发展的科学依据。 中子活化分析具有灵敏度高,多元素同时测定,无试剂空白等优点,已广泛用于地质样品中稀土元素的分析。 地质样品成份复杂,干扰元素多,用仪器中子活化分析直接测定全部稀土元素是困难的,故必须采用放化分离。目前报道化学分离测定稀土元素的文章很多,但一般分离步骤都很复杂,且耗费时间。本法是将辐照后的样品用混合酸溶解,加适量的掩蔽剂,在pH=2.5
The content of rare earth elements in minerals is the scientific basis for studying the formation and development of minerals. Neutron activation analysis with high sensitivity, simultaneous determination of multiple elements, no reagent blank, etc., has been widely used in geological samples of rare earth elements. Geological samples of complex composition, interference elements and more, with the instrument neutron activation analysis of all the direct determination of rare earth elements is difficult, it must be used radiochemical separation. It is reported that there are many articles about chemical separation and determination of rare earth elements, but the general separation steps are complicated and time-consuming. This method is to irradiate the sample with a mixed acid dissolved, add appropriate masking agent, at pH = 2.5