Ege University, Institute of Nuclear Sciences, 35100 Bornova-Izmir, Turkey.
Appl Spectrosc. 2013 Jul;67(7):731-7. doi: 10.1366/12-06756.
A comparison method for the determination (without sample pre-concentration) of uranium in ore by inductively coupled plasma optical emission spectrometry (ICP-OES) has been performed. The experiments were conducted using three procedures: matrix matching, plasma optimization, and internal standardization for three emission lines of uranium. Three wavelengths of Sm were tested as internal standard for the internal standardization method. The robust conditions were evaluated using applied radiofrequency power, nebulizer argon gas flow rate, and sample uptake flow rate by considering the intensity ratio of the Mg(II) 280.270 nm and Mg(I) 285.213 nm lines. Analytical characterization of method was assessed by limit of detection and relative standard deviation values. The certificated reference soil sample IAEA S-8 was analyzed, and the uranium determination at 367.007 nm with internal standardization using Sm at 359.260 nm has been shown to improve accuracy compared with other methods. The developed method was used for real uranium ore sample analysis.
采用电感耦合等离子体发射光谱法（ICP-OES），无需样品预浓缩，对矿石中的铀进行了测定（比较）。实验采用三种程序：基体匹配、等离子体优化和三条铀发射线的内标法。对三种钐波长进行了测试，作为内标法的内标。通过考虑 Mg(II) 280.270nm 和 Mg(I) 285.213nm 谱线的强度比，评估了射频功率、雾化器氩气流速和样品进样流速等稳健条件。通过检出限和相对标准偏差值对方法的分析特性进行了评估。对认证参考土壤样品 IAEA S-8 进行了分析，结果表明，与其他方法相比，使用 359.260nm 的钐对内标法在 367.007nm 处测定铀可提高准确性。该方法已用于实际铀矿石样品的分析。
