摘要
采用对位聚苯作为高压密闭消解罐材料,在240℃条件下,用HNO_(3)-NH_(4)HF_(2)快速分解了沉积型稀土矿中La、Ce、Pr、Nd、Y、Nb和Zr,然后用H_(2)SO_(4)赶酸破坏消解液中的稀土氟化物,在5%HCl-5%酒石酸介质中,通过优选分析谱线和基体匹配校正干扰,建立了高压密闭消解-电感耦合等离子体原子发射光谱法测定沉积型稀土矿中La、Ce、Pr、Nd、Y、Nb和Zr。相比于传统的密闭溶样法,本方法的分解温度更高、周期更短、效率更高。采用其他分析方法对实际样品进行对比测试,结果基本一致。
La,Ce,Pr,Nd,Y,Nb,and Zr were rapidly decomposed in a sealed digestion tank available for para polyphenylene by HNO_(3)-NH_4HF_(2) at 240℃in sedimentary rare earth ores.H_(2)SO_(4) was used to drive acid to destroy the rare earth fluoride in the digestion solution,in the medium of 5%HCl-5%tartaric acid,the interference was corrected by optimizing the analytical spectral line and matrix matching.A method for the determination of La,Ce,Pr,Nd,Y,Nb,and Zr in sedimentary rare earth ores by high-pressure closed digestion inductively coupled plasma atomic emission spectrometry was established.The method has a higher decomposition temperature,a shorter cycle,and higher efficiency than the traditional closed-vessel digestion method.The results were in agreement with other methods according to the actual sample test analysis.
作者
邵坤
余滔
龚大兴
SHAO Kun;YU Tao;GONG Da-xing(Institute of Multipurpose Utilization of Mineral Resources,Chinese Academy of Geological Sciences,Chengdu 610041,China;Technology Innovation Center of Rare Earth Resources Development and Utilization,China Geological Survey,Chengdu 610041,China;Sichuan Rare Earth Technology Innovation Center,Chengdu 610041,China)
出处
《稀土》
CAS
CSCD
北大核心
2024年第1期87-94,共8页
Chinese Rare Earths
基金
中国地质调查局项目(DD20189507,DD20211236)
四川省科技计划项目(2023YFQ0062)。
