Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2009, Vol. 20 ›› Issue (6): 340-343 doi: 10.13538/j.1001-8042/nst.20.340-343

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A simple method for determining Hf in Zr and Zr alloys by ICP-AES

NABI Mehdi1,* SHAHBAZI Pouyan2   

  1. 1 Fuel Manufacturing Plan (FMP), Isfahan, Iran 2 Uranium Conversion Facilities (UCF), Isfahan, Iran
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NABI Mehdi, SHAHBAZI Pouyan. A simple method for determining Hf in Zr and Zr alloys by ICP-AES.Nuclear Science and Techniques, 2009, 20(6): 340-343     doi: 10.13538/j.1001-8042/nst.20.340-343

Abstract:

This paper describes a rapid, accurate and precise method for determination of trace hafnium (Hf) in zirconium and zirconium alloys by inductively coupled plasma atomic emission spectrometry (ICP-AES). It was found that using a mixture of sulfuric acid (H2SO4) and ammonium sulfate (NH4)2SO4, the total sample dissolution time was 15 min. Experimental works revealed that a high Zr concentration would result in a significant decrease in the peak height of the analyte lines, which was corrected by standard addition method. The performance of the developed method was evaluated by calculating the recovery percent and using standard reference material analysis. The recoveries were in the range of 97.6%–99.5% and the relative standard deviations were within 0.8%–3.0%. The detection limit (3σ) of Hf was found to be 0.01 μg·g−1, respectively. The proposed technique, with high precision and accuracy, was applied to the analysis of trace Hf in zirconium-niobium ingots and tubes for the first time in Iran.

Key words: Zirconium, Zirconium alloys, Hafnium, ICP-AES, Fuel assembly