Abstract：Nuclear grade Fe-Cr-Al alloy is a very important cladding material. The content of impurity elements in nuclear grade Fe-Cr-Al alloy is critical to its properties and should be accurately determined. The sample was dissolved with nitric acid-hydrochloric acid mixture. Then hydrofluoric acid was added to completely dissolve the sample. Mn 257.610nm, Mo 204.598nm, Nb 295.088nm, Ni 231.604nm, Si 212.412nm, Ta 269.452nm, Ti 334.941nm, V 310.230nm, Y 371.030nm, Zr 327.305nm were selected as the analytical spectral lines. The calibration curve was prepared by matrix matching method to eliminate the matrix effect. Consequently the determination method of ten impurity elements (including Mn, Mo, Nb, Ni, Si, Ta, Ti, V, Y and Zr) in nuclear grade iron-chromium-aluminum alloy by inductively coupled plasma atomic emission spectrometry (ICP-AES) was established. Within the linear ranges of each element, the correlation coefficients of calibration curves were all greater than 0.9997. The detection limits of elements in this method were in the range of 0.30-31μg/g. Ten impurity elements in nuclear grade iron-chromium-aluminum alloy were determined according to the experimental method. The relative standard deviations (RSD, n=6) were between 1.1% and 4.5%. The spiked recoveries were between 95% and 105%.
杨平, 邓传东, 孙琳, 盛红伍, 安身平. 电感耦合等离子体原子发射光谱法测定核级铁铬铝合金中10种杂质元素[J]. 冶金分析, 2019, 39(11): 74-78.
YANG Ping, DENG Chuan-dong, SUN Lin, SHENG Hong-wu, AN Shen-ping. Determination of ten impurity elements in nuclear grade iron- chromium-aluminum alloy by inductively coupled plasma atomic emission spectrometry. , 2019, 39(11): 74-78.
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