PAN沉淀富集、ICP-AES法测定岩石中31个微量元素  

PAN Enriching and ICP-AES Determination of 31 Trace Elements in Rocks

作　　者：黄金鲲[1] 王宏中 Huang Jinkun;Wang Hongzhong

机构地区：[1]地质部宜昌地质矿产研究所

出　　处：《岩矿测试》1982年第4期54-59,I0007,共7页Rock and Mineral Analysis

摘　　要：感耦高频等离子体发射光谱分析要求在总盐分浓度较低的溶液中进行,因此在测定岩石中的微量元素时,一般需要分离大量的基体元素。PAN不仅可作显色剂和金属指示剂,还可作萃取剂,此外还能与多种金属离子即使是微量元素也形成难溶性的沉淀。本文在文献的基础上,对铜、镍、铁、铌、钽及稀土等40多个元素在不同条件下用PAN进行沉淀试验。最后确定在pH8时.A method for ICP-AES determination of 31 trace e’ements in rocks vrith PAN enriching was studu-d.These elements were precipitated with PAX in a chloride solution of pi 18.Tin-Precipitate was then dissolved in 5%HC1 solution.The dissolved amounts of iron and aluminium were so small 1 hat they could not cause interference in the determination.In this method the concentrations of Nb,Ta.Hf,Th,Sr,Cr,Ni,Ti,V,Mn,Ph,Zn,Su,Cd,In,La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Er,Tm,Lu and Y were determined simultaneously by ICP-AES method.

关 键 词：发射光谱分析 金属指示剂 高频等离子体 基体元素 沉淀试验 盐分浓度 微量元素 难溶性 

分 类 号：O65[理学—分析化学]