Inductively coupled plasma emission spectrometry(ICP-OES)was used to determine Ca,Fe and Zn in zinc smelting slag.The metal elements in zinc smelting slag can be rapidly determined by ICP-OES sampling analysis and elec-trothermal plate digestion.The experimental results show that the detection intensity is linearly correlated with the concen-tration at 200℃when concentrated hydrochloric acid is used as the digestion solution,and the correlation coefficients of the calibration curves of the three elements are above 0.999.The detection limit of the method was determined based on the blank experiment,and the detection limit of the method was 0.01～0.12 mg/L,and the detection limit was good.The re-sults were 89.9%～94.1%,and the relative standard deviation of 6 repeated tests was less than 2%.Good results were ob-tained.In summary,the method has the advantages of high precision,high recovery rate and fast detection speed,and can be widely used in the rapid determination of metal elements in zinc smelting slag.
zinc smelting slagICP-OESelectrothermal plate digestionmetallic element
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