Method for detecting terbium oxide content

A detection method, the technology of terbium oxide, applied in the direction of measuring device, test sample preparation, instrument, etc., can solve the problems of long measurement time, large human error, high labor intensity, etc., achieve short measurement time, small human error, The effect of low labor intensity

Inactive Publication Date: 2008-06-11
CAIHONG GRP ELECTRONICS CO LTD
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Problems solved by technology

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 Phosphor powder samples for lamps are sintered at high temperature, which brings great difficulties to t

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: 1) First, mix 85-99% matrix and 1-15% terbium oxide by mass percentage to prepare a series of mixed samples;

[0014] 2) Mix the prepared series of mixed samples with water at a mass ratio of 1:3-1:10, put them in a roller bottle, and place the roller bottle on a roller screen machine to mix the samples evenly;

[0015] 3) Put a series of uniformly mixed samples into a drying oven and dry at 100-150 degrees;

[0016] 4) Fully mix the dried series of samples respectively, and press the samples to prepare a series of standard samples;

[0017] 5) make a standard curve according to a series of standard samples made, measure the intensity of the characteristic line of the analytical element terbium with a series of standard samples made by X-ray fluorescence analysis method, take the intensity value Ai (i=1, 2, 3-9) draw standard curve A=f(c) to the terbium content ci (i=1,2,3-9) in the standard sample, the intensity value Ai is the ordinate, and the terbium ...

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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...

Claims

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Application Information

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IPC IPC(8): G01N23/223G01N1/28G06F17/10
Inventor 郑阿群张帅奇
Owner CAIHONG GRP ELECTRONICS CO LTD
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