ICP-AES法测定电炉渣中二氧化硅

Determination of Silica in Electric Furnace Slag by ICP-AES Method

本文研究了采用酸溶的方式消解样品,ICP-AES光谱法测定电炉渣中二氧化硅的分析方法。采用浓盐酸和浓硝酸溶解电炉尾料样品,加入氢氟酸消解二氧化硅和硼酸络合氟离子,采用ICP-AES法测定电炉尾料样品中的二氧化硅含量。二氧化硅的相对标准偏差RSD为0.35%~0.58%,加标回收率为95.6%~102.3%。方法加标回收率好,满足分析方法要求。

This paper studies the analysis method to determine silica in electric furnace slag with ICP-AES spectroscopy and using acid solution to digest samples.Concentrated hydrochloric acid and concentrated nitric acid are used to dissolve the electric furnace tailing samples,hydrofluoric acid is added to digest the silica,boric acid is added to complex fluoride ions,and the ICP-AES method is used to determine the silica content in the electric furnace tailing samples.The relative standard deviation(RSD)of silica is between 0.35%and 0.58%,and the standard recovery rate is between 95.6%and 102.3%.The standard recovery rate of the method is good,which can meet the requirements of the analytical method.