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,使PAN与待测金属 Inductively coupled high-frequency plasma emission spectroscopy requires a lower total salt concentration in the solution, so the determination of trace elements in rocks, the general need to separate a large number of matrix elements. PAN not only as a developer and metal indicator, but also as an extractant, in addition with a variety of metal ions even trace elements also form insoluble precipitate. In this paper, based on the literature, more than 40 elements such as copper, nickel, iron, niobium, tantalum and rare earth were precipitated with PAN under different conditions. Finally, at pH8, make the PAN and the metal under test