N. N. Bushuev, D. S. Zinin, G. K. Tatosyan, N. V. Sviridenkova
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引用次数: 0
摘要
X 射线荧光光谱法研究了 KNd(SO4)2-H2O-SrSO4-0.5H2O 体系固溶体的组成，该固溶体是由 KCl、NdCl3、SrCl2 和 H2SO4 的水溶液合成的。通过最小二乘法技术计算了 Nd、Sr 和 K 的强度与元素浓度的校准相关系数。在测定钾时使用了线性近似函数，在测定钕和锶时建议使用抛物线近似函数。所获得的依赖关系具有相对近似误差小（1%）的特点。在钾 0.863-8.892、锶 8.41-38.03 和钕 5.296-29.30 的分析范围（重量百分比）内，标准偏差分别为 0.012-0.028、0.008-0.098 和 0.05-0.27。
Determination of Potassium, Neodymium, and Strontium in Solid Solutions in the KNd(SO4)2·H2O–SrSO4·0.5H2O System Using X-Ray Fluorescence Spectrometry
The composition of solid solutions in the KNd(SO4)2·H2O–SrSO4·0.5H2O system, synthesized from aqueous solutions of KCl, NdCl3, SrCl2, and H2SO4, was studied by X-ray fluorescence spectrometry. Coefficients of calibration dependences for intensity vs. element concentrations were calculated for Nd, Sr, and K by the least-squares technique. A linear approximation function was used in determining potassium and a parabolic approximation function was recommended in determining neodymium and strontium. The obtained dependences are characterized by low (<1%) relative approximation errors. In the analytical ranges (wt %) for K 0.863−8.892, Sr 8.41−38.03, and Nd 5.296−29.30, the standard deviations were 0.012−0.028, 0.008−0.098, and 0.05−0.27 respectively.
期刊介绍：
The Journal of Analytical Chemistry is an international peer reviewed journal that covers theoretical and applied aspects of analytical chemistry; it informs the reader about new achievements in analytical methods, instruments and reagents. Ample space is devoted to problems arising in the analysis of vital media such as water and air. Consideration is given to the detection and determination of metal ions, anions, and various organic substances. The journal welcomes manuscripts from all countries in the English or Russian language.
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