Abstract：The furnace slag sample was treated by microwave digestion in hydrochloric acid-hydrofluoric acid system. B 182.577nm or B 249.678nm was selected as the spectral line. The automatic matching method (FITTED) was used for spectral correction and background deduction under the condition that the matrix had no obvious interference. The standard solution series and calibration curves were prepared by matrix matching method. The determination method of boron in furnace slag byinductively coupled plasma atomic emission spectrometry (ICP-AES) with microwave digestion was established. The calibration curves were linear when the mass fraction of boron was in range of 0.0006%-0.25% (B 182.577nm) or 0.0008%-0.25% (B 249.678nm). The linear correlation coefficients (r) were not less than 0.9998. The detection limit of boron in this method was less than 0.0002%. The proposed method was applied for the determination of boron in furnace slag samples. The relative standard deviations (RSD, n=6) of determination results were less than 3%. The spiked recoveries were between 96% and 102%. The found results were consistent with those obtained by inductively coupled plasma mass spectrometry (ICP-MS).
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