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.