ICP-AES内标法测定钛铁矿中铜钴镍锰钒铬

Determination of Cu Co Ni V and Cr in ilmenite by Using Coupled Plasma-Atomic Emission Spectrometry with YInternal Standard

摘要:

采用HClHNO3HFH2SO4溶矿，利用电感耦合等离子体发射光谱仪内标法（ICPAES）测定，建立了钛铁矿、钒钛磁铁矿中铜、钴、镍、锰、钒、铬等元素的同时测定方法。对电感耦合等离子体发射光谱仪测定的最佳仪器条件及分析谱线进行了选择，并对钛、铁基体的影响以及采用Y内标元素消除基体的影响进行了研究。实验结果表明：采用内标法能够消除基体对被测元素的影响，改善分析准确度和精密度，与经典分光光度法和原子吸收法相比较，具有检出限低、灵敏度高，操作简便、快速等突出优点。方法经国家一级钒钛磁铁矿标准物质验证，测定值与标准值吻合。

Abstract:

By using HCLH2NO3HFH2SO4 to melt ore, using Yinternal standard by inductively coupled plasmaatomic emission spectrometry(ICPAES) method, the method for determining Cu,Co,Ni,V and Cr in ilmenite and vanadium and titanium magnetite at the same time has been set up. The amount of fluxes,detecting lines and instrument working parameters have been selected, the matrix effects of titanium and iron, and the method for eliminating the influence of matrix by using Yinternal standard have been studied in this paper. It is showed that Yinternal standard can eliminate the influence of matrix on the detection, and the accuracy and precision of analysis results can be improved as well. Compared with classic spectrophotometry and atomic absorption spectrometry, this method has the advanges of lower detection limits, higher sensitivity, simpler and faster operation. Tested by National Standard Reference Materials, the determination values are in good agreement with certified values .