In this article, the X‐ray fluorescence technique is proposed for the quantitative determination of major elements in ferromanganese nodules and crusts, which is a necessary stage of the oceanic ferromanganese deposits investigation and development. The research was performed using a wavelength‐dispersive spectrometer S4 Pioneer (Bruker AXS, Germany). Certified reference materials of ferromanganese nodules, cobalt‐bearing ferromanganese crusts and pelagic sediments were dried and prepared by two different techniques: the pressing of powder samples on a boric acid substrate and the homogenization by fusion with lithium tetraborate in an electric furnace at 1050°C. For each sample preparation technique, different forms of calibration curves (linear or quadratic) and methods of matrix effect correction (fundamental parameters or empirical intensities coefficients) were examined. The uncertainty of the proposed technique was assessed by analyzing the certified reference material FeMn‐1 and by comparison with the atomic absorption spectrometry, flame photometry and spectrophotometry results. Analysis of both fused beads and pressed pellets provides a quantitative determination of the major elements in the oceanic ferromanganese nodules.

中文翻译：

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X射线荧光法测定锰铁结核中的主要元素

本文提出了X射线荧光技术定量测定锰铁结核和结壳中主要元素的方法，这是海洋锰铁矿床研究和开发的必要阶段。该研究是使用波长分散光谱仪S4 Pioneer（德国布鲁克AXS）进行的。将经过认证的锰铁结核，钴钴铁结壳和浮游沉积物的参考材料干燥并通过两种不同的技术制备：将粉末样品压在硼酸基质上，并在1050°C的电炉中通过与四硼酸锂熔融进行均质化。对于每种样品制备技术，研究了不同形式的校准曲线（线性或二次曲线）和矩阵效应校正方法（基本参数或经验强度系数）。通过分析认证的参考材料FeMn-1并与原子吸收光谱法，火焰光度法和分光光度法结果进行比较，评估了所提出技术的不确定性。对熔融珠粒和压制丸粒的分析提供了海洋铁锰结核中主要元素的定量测定。