Standard Method for Determination of W, Mo, Nb, Ta, Fe, P, V in Uranium-Productive Rock by X-Ray Fluorescence Spectrometry

The content of W, Mo, Nb, Ta, Fe, P, V are usually high in uranium ore or uranium-productive rock. The research focus on determing the high content samples of W, Mo, Nb, Ta, Fe, P, V by X-ray spectrofluorimetry method, through extending the calibration curve’s quantitative range of these elements by artificial standard materials, the preparing method is fusion for Li₂B₄O₇ and LiBO₂-mixed flux, the correct method are theoretical α coefficients and the empirical coefficient. The validity of the method is substantiated by analyzing the national standard materials, the results are basically in accordance with reference contents. Additionally, the results which got by X-ray method are in accordance with the results of ICP-MS method. So this method is used to analyze high concentration of W, Mo, Nb, Ta, Fe, P, V about uranium-productive sample. This method also can analyze the silicate, uranium ore, and phosphate rock samples and other samples which are match the matrix of this method.