Determination of boron oxide in refractories by inductively coupled plasma atomic emission spectrometry
PENG Yu-fei1, WANG Ben-hui*2, XU Xiao-ying2, PENG Xi-gao2
1. School of Material Science Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2. Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, China
Abstract：After the sample was fused at about 1 000 ℃ with sodium carbonate as flux, the molten material was dissolved by hydrochloric acid, then the content of boron trioxide in refractories was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES) with the spectral line of 249.773 nm as analysis line. The matrix effect generated by addition of the large amount of sodium salt in the sample fusion process showed an impact on the determination, which could be eliminated by matrix matching method. The coexistent elements in refractories including aluminum, silicon, iron, titanium, calcium and magnesium had no influence on the determination of boron. The detection limit was 0.2 μg/mL. This method was used to determine boron trioxide in the self-made boron-containing refractories synthetic sample. The results were basically consistent with the reference value, and relative standard deviations (RSD, n=6)were less than 5%.
ISO21078:2008 Determination of boron oxide in refractory products-Part 1: Determination of total boron oxide in oxidic materials for ceramics, glass and glazes[S].
