ICP-AES Determination of Fe,Cu,Pb,Zn,As,Sb,Mo and Cd in Multi-Metal Ores

ICP-AES was applied to the simultaneous determination of Fe,Cu,Pb,Zn,As,Sb,Mo and Cd in multi-metal ores.The sample of multi-metal ores was treated with HCl-HNO3-HF-HClO4.The analytical spectral lines of 259.9,324.7,220.3,213.8,189.0,206.8,202.0,228.8 nm were chosen for the determination of Fe,Cu,Pb,Zn,As,Sb,Mo and Cd,respectively.Linear relationships between the emission intensity and the mass concentration of the elements were kept in definite ranges.The detection limits (3S/N) ranged from 0.21 to 8.4 μg·g-1.The proposed method was applied to the analysis of the standard rock samples (GBW 07162 and GBW 07163),giving results in agreement with the certified values,with RSD (n=12) in the range of 0.4%-2.8%.