Method of measuring major and minor elements in manganese ore by using X fluorescence spectrophotometer

Abstract

The invention belongs to the technical field of analytical tests, and discloses a method of measuring major and minor elements in manganese ore by using an X fluorescence spectrophotometer. A high-pressure powder sample preparing technology capable of reducing powder effects, granularity effects and mineral effects is used as a sample preparing method of manganese-ore XRF analysis, at the same time, instrument quantitative analysis software is adopted to correct absorption enhancement effect interference, background interference and matrix effect interference among the elements, and a high-pressure powder pressing X-ray fluorescence spectrum analysis method for measuring multiple components in the manganese ore is established. According to the method of measuring the major and minor elements in the manganese ore by using the X fluorescence spectrophotometer, the high-pressure powder sample preparing technology capable of reducing the powder effects, the granularity effects and the mineral effects is used as the sample preparing method of the XRF analysis manganese ore, the purpose of rapidly measuring the major and minor components in the manganese ore at a time through the high-pressure powder pressing XRF is achieved, adoption of serial methods matched with traditional manganese ore is avoided, labor and costs are saved, the testing efficiency and economic benefits are improved, and at the same time, the environment protection idea of green analysis can be achieved.

Description

technical field [0001] The invention belongs to the technical field of analysis and testing, and in particular relates to a method for measuring primary and secondary elements in manganese ore with an X-ray fluorescence spectrometer. Background technique [0002] In conventional manganese ore analysis, in addition to the main manganese and iron elements, beneficial components such as CaO and MgO, SiO 2 、Al 2 o 3 、K 2 O, Na 2 O, TiO 2 , P, S, As, BaO and other impurities and associated metal elements Cu, Co, Ni, V, etc. for simultaneous analysis. The standards of various countries are basically classical methods based on chemical analysis methods for the individual detection of each element. After the 1990s, with the emergence of large precision analytical instruments such as inductively coupled plasma mass spectrometer (ICP-MS), inductively coupled plasma spectrometer (ICP-AES), X-ray fluorescence spectrometer (XRF), using these large instruments to simultaneously, Ra...

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Problems solved by technology

However, because manganese ore has strong water absorption and often contains crystal water, it is easy to generate air bubbles when melting glass sheets, and it is difficult to get rid of them. This requires the operator to have a high level of experience, otherwise it is easy to cause poor reproducibility of the prepared samples. it is good

In addition, there are still two shortcomings in the determination of primary and secondary components in manganese ore by high-temperature fusion chip-X-ray fluorescence spectrometry: one is that the sample preparation speed is relatively slow, and it is not suitable for the determination of large quantities of samples; , the accuracy becomes poor due to solvent dilution, and the testable range is small

This is mainly because the composition of manganese ore is very complex, the content of main components is high, and the range of change is large, which makes the matrix change greatly, which has an adverse effect on X-ray fluorescence analysis. ), there are serious "powder effect", "grain size effect" and "mineral effect", so that the accuracy of manganese ore analysis by the usual powder tablet method is not as high as that of the chemical method

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