电感耦合等离子体发射光谱法测定锑精矿中多种微量元素

建立了电感耦合等离子体发射光谱法(ICP-OES)测定锑精矿中10种微量元素Zn、Cd、Pb、Si、Mn、Fe、Mg、Ca、Cu、Ag的快速定量分析方法。探讨了锑精矿的溶样方法,发现采用氢溴酸挥锑后用浓酸溶解样品,稳定性较好。优化了仪器参数条件,对样品中各元素做加标回收试验。与原子吸收光谱法测定比较,方法检出限低,精密度(RSD,n=11)均小于6%,回收率为89.4%~108.0%,能满足进出口对锑精矿中杂质元素的检测要求。

Determination of Micro Amount of Elements in Antimony Concentrates by Inductively Coupled Plasma-Optical Emission Spectrometry

A method for the determination of micro-amount of Zn,Cd,Pb,Si,Mn,Fe,Mg,Ca,Cu and Ag in antimony concenrtates by inductively coupled plasma-optical emission spectrometry(ICP-OES) was developed.The sample was dissolved with concentrated HCl after removing antimony by hydrobromic acid.The instrument operation parameters were optimized.The recovery of the method for these elements were 89.4%～108.0% with precision of less than 6%RSD(n=11).Compared with AAS,the method provides advantages of low detection limits,good precision,high analytical efficiency.The method is suitable for entry-exit inspection of antimony concentrates.