Cobalt-containing flux for XRF analysis, preparation method thereof and preparation method of sample for XRF analysis

Abstract

The invention provides a cobalt-containing flux for XRF (X-Ray Fluorescence) analysis, a preparation method of the cobalt-containing flux and a preparation method of a sample for XRF analysis. The cobalt-containing flux is prepared from lithium tetraborate and / or lithium metaborate and cobalt sesquioxide, or the lithium ion battery electrolyte is composed of lithium tetraborate and / or lithium metaborate, cobaltic oxide and lithium bromide. As the cobalt-containing solvent contains the internal standard element cobalt and the release agent lithium bromide, when the sample for XRF quantitative analysis is prepared by adopting a melting method, if cobalt is used as an internal standard to improve the element content measurement accuracy, the cobalt-containing solvent can be directly weighed, cobalt sesquioxide or prefabricated cobalt-containing glass powder and the release agent do not need to be additionally weighed, the weighing frequency is reduced, the analysis efficiency is improved, the measurement uncertainty caused by weighing is reduced, and the method has a good application prospect in testing of iron content and the like.

Description

technical field [0001] The invention belongs to the technical field of chemical detection, and in particular relates to a cobalt-containing flux for X-ray fluorescence spectrum (XRF) analysis, a preparation method thereof and a sample preparation method for XRF analysis. Background technique [0002] X-ray fluorescence spectroscopy (XRF) is a chemical component detection technology, widely used in mining, smelting, geology, chemical industry, environmental protection, cultural relics and other fields. The reliability of XRF quantitative analysis largely depends on stable and reliable instruments, high-quality standard samples and appropriate sample preparation methods. For bulk commodities like iron ore, the iron content is an important basis for determining its grade, so improving the accuracy of iron content determination is of great significance in iron ore trade and the steel industry. In addition, due to the large amount of detection, the detection speed has also becom...

AI Technical Summary

Problems solved by technology

Using the former method requires at least 3 weighings, and the precision of sample preparation may not be high; while using the latter method, the number of weighings is not reduced, but it is necessary to pre-melt cobalt-containing glass powder

The increase in the number of weighings not only reduces the test speed, but also increases the measurement uncertainty