Determination of six elements in lead concentrate by inductively coupled plasma atomic emission spectrometry

The simultaneous determination of lead and impurity elements(zinc,copper,aluminum,magnesium and arsenic) in lead concentrate was studied by inductively coupled plasma atomic emission spectrometry(ICP-AES).The samples were melted with NaOH-Na2O2,extracted and acidized with HCl,and then determined by ICP-AES.The sample preparation condition,determination medium and the interference between matrix and coexisting elements were discussed.The results showed that coexisting sulfur(mass fraction 5 %),silicon(mass fraction 10 %) and iron(mass fraction 20%) had little interference with the determination.The matrix effect of this method was small without obvious interference among testing elements.This method was applied to the determination of standard sample and actual samples,and the results were in good agreement with the certified values or those obtained by other methods.