Method for detecting terbium oxide content

Abstract

A testing method of terbia content is provided, which firstly makes generatrix, terbia and water mixed to get a series of composite samples, and then dries and presses to a series of samples. According to the series of standard samples, standard curve is made. The procedures are as follows: the intensity of the character line of analyzed element terbium is measured by the X Rays fluorescence analysis to the prepared series of standard samples, and the density of the known element in intensity value and standard samples are fitted into a smooth curve, namely the standard curve; according to standard curve, the test value of the sample is counted, which means that simultaneously, the intensity A of the character line of analyzed element terbium are measured. Then the intensity is fit on the best standard curve, according to the intensity value A of the tested element, and the terbium content of the sample can be obtained from the standard curve formula A equals to f(c). By using the method, the measuring time is short, the precision is high, and the invention can quickly and accurately make feedback of the quality information, which is an accurate, convenient and quick testing method.

Description

technical field

[0001] The invention relates to a detection field, in particular to a detection method for terbium oxide content. Background technique

[0002] The analysis method of terbium oxide content is often used in the phosphor industry. The accuracy of the analysis results is very important to the quality of the product and the cost control of the product. Since terbium oxide is a precious rare earth metal, it is very important for the fluorescent powder The test of terbium oxide content in medium has important practical significance. At present, there is no public report on the test method of terbium oxide content in fluorescent powder for lamps. The analysis method of terbium oxide content generally adopts chemical analysis method—volume analysis method or plasma test method. The chemical analysis method needs to dissolve the sample first, but due to The fluorescent powder samples for lamps are sintered at high temperature, which brings great difficulties to the w...