ICP-AES/AFS 联合测定金矿地质样品中32种主次痕量元素

摘要

建立了电感耦合等离子体发射光谱（ICP－AES）与原子荧光光谱（AFS）联合测定金矿地质样品中32种主、次、微痕量元素的方法。样品分别采用HNO3－HF－HClO4－H3 PO4和KOH及含酒石酸的王水分解，ICP－AES依次测定主量元素Si、Al、Ca、Mg、Fe、P，较高含量元素Mo、Sn、W，以及Ag、As、B、Ba、Be、Bi、Ce、Co、Cr、Cu、K、Mn、Na、Sb、Sr、Ti、Ni、Pb、V、Zn等；AFS依次测定微痕量Hg和Se、Te。该方法应用于金矿地质样品和多金属国家标准样品分析，测定结果与推荐值吻合，精密度（ RSD）小于10％，为金矿地质样品化学组成和多金属矿床成矿环境、成因机制的研究以及矿产资源的综合利用等，提供了充分的依据。%A combined ICP-AES/AFS method in determining 32 major and minor and trace elements in gold ge-ological samples is established .The samples are dissolved by HNO 3 -HF-HClO4 -H3 PO4 ,KOH and aqua regia with tartaric acid respectively .ICP-AES determines major elements Si ,Al,Ca,Mg,Fe,P,relatively high content elements Mo,Sn,W,and Ag,As,B,Ba,Be,Bi,Ce,Co,Cr,Cu,K,Mn,Na,Sb,Sr,Ti,Ni,Pb,V,Zn and so on; AFS determines trace elements Hg and Se ,Te.The method is used in the analysis of gold geological samples and polymetallic national standard samples .The determination results are consistent ,RSD is less than 10%,providing adequate evidence for the study of chemical composition of geological samples ,mineralization settings of the polymetallic deposit and the genesis mechanism as well as the comprehensive utilization of mineral resources .