Abstract：The sample was dissolved by nitric acid and hydrofluoric acid. The Zr 327.305 nm was selected as analytical line. The analysis method of zirconium content in hafnium alloy by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. The results showed that the determination results of zirconium were insignificantly affected by hafnium when the mass concentration of hafnium was lower than 100 μg/mL. The matrix matching method was not required to prepare the calibration curve. Since the acidity had influence on the determination results of zirconium, the acidity of testing solution should be consistent with the standard solution series. In the experiment, the acidity was about 1.0 mol/L. When the mass concentration of zirconium was in range of 0.2-5.0 μg/mL, the linear regression equation of calibration curve was y=39 966 x+176 with correlation coefficient of r=0.999 7. The detection limit of zirconium was 0.001 5 μg/mL. The proposed method was applied to the determination of zirconium in hafnium alloy. The relative standard deviation (RSD, n=6) was less than 1%, and the recovery was 99%. Meanwhile, the proposed method was compared with X-ray fluorescence spectrometry. It was found that the determination results of two methods were basically consistent.
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