This paper suggests a preparation procedure for the analysis of blast furnace slag, based on an idea of glass bead sample preparation for X-ray fluorescence (XRF) analysis, to determine all major constituents, including silicon at the same time, by using inductively coupled plasma-atomic emission spectrometry (ICP-AES). Differing from a conventional alkaline-fusion method, the slag sample was first fused with lithium tetraborate to prepare it in a glass bead specimen for XRF, and then a sample solution could be obtained without any loss of the silicic constituents by dissolving the glass bead with nitric acid and then adding hydrofluoric acid. The contents of Na, MgO, Al 2 O 3 , SiO 2 , P, K, CaO, TiO 2 , MnO, and total Fe in a slag sample could be simultaneously determined, while an additional procedure for separation of silicon from the other analytes was needed in a conventional ICP-AES. The suggested method would enable several kinds of blast furnace slag to be analyzed through easier sample preparation procedure.
- Glass bead
- Inductively coupled plasma atomic emission spectrometry
- Lithium tetraborate
- Sample preparation
- Silicic material