CN108802084A - X ray fluorescence spectrometry analyzes method, aluminium hydroxide and its application of component content in aluminium hydroxide - Google Patents

Abstract

The invention belongs to the technical field of chemical analysis and treatment, and relates to a method for analyzing component content in aluminum hydroxide by X-ray fluorescence spectrometry, aluminum hydroxide and application thereof. The method for analyzing the content of components in aluminum hydroxide by X-ray fluorescence spectrometry of the present invention comprises the following steps: grinding; powder pressing; adopting X-ray fluorescence spectrometry to measure the emission intensity of each component in the sample, and using the established components The working curve is used to analyze the content of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in the aluminum hydroxide sample to be tested. The method of the invention is simple in operation and fast in analysis speed, and can simultaneously analyze four components of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ , and Na ₂ O in aluminum hydroxide. It has been confirmed that the method is scientific, advanced, and applicable , short analysis time, high accuracy, good repeatability, no pollution, etc.; the repeatability and reproducibility are better than the national standard method for the determination of chemical components in aluminum hydroxide.

Description

Method for analyzing component content in aluminum hydroxide by X-ray fluorescence spectrometry, aluminum hydroxide and its application

technical field

The invention belongs to the technical field of chemical analysis and processing, and in particular relates to a method for analyzing component content in aluminum hydroxide by X-ray fluorescence spectrometry, aluminum hydroxide and applications thereof.

Background technique

Aluminum hydroxide is a widely used industrial raw material, which can be used in the manufacture of medicines, flame retardants, waterproof fabrics, inks, glass and other fields. For example, when aluminum hydroxide is used in the field of float glass production, it mainly plays the role of introducing Al ₂ O ₃ components, and the chemical composition of aluminum hydroxide is required for the calculation of glass batching. The quality of aluminum hydroxide directly affects the composition, molding viscosity, physical and chemical properties of the glass; in the process of glass production, most of the composition of aluminum hydroxide is transferred into the glass, so the composition and content of aluminum hydroxide change It will cause changes in the composition and content of the glass, and affect the actual application or performance of the glass. Because the main components in aluminum hydroxide include not only Al ₂ O ₃ , but also Fe ₂ O ₃ , SiO ₂ , Na ₂ O and other components. Therefore, the accurate determination of the main chemical components and their contents in aluminum hydroxide has certain guiding significance for the production of float glass.

At present, the method of analyzing the content of each component in the raw material of aluminum hydroxide mostly adopts the following chemical analysis method of the relevant standards of the aluminum hydroxide industry (YS/T534.2～534.5) (GB/T6610.2～6610.5):

The loss on ignition (loss on ignition) is measured by gravimetric method;

The determination of silicon dioxide content adopts the molybdenum blue photometric method;

The determination of ferric oxide content adopts o-phenanthrene photometry;

The determination of sodium oxide content adopts flame spectrophotometry/flame atomic absorption spectrometry;

The content of aluminum oxide is: 100% minus the sum of silicon dioxide, sodium oxide, iron oxide and ignition loss, that is, w(Al ₂ O ₃ )=100%-w(SiO ₂ )-w(Na ₂ O)-w(Fe ₂ O ₃ )-Ignition loss.

Each item of the above-mentioned chemical analysis method needs to be tested separately, and only a single element can be analyzed. The operation process is complicated, the sample pretreatment is complicated, there are many links, and many knowledge points are involved. There are many reagents, the use of hazardous chemicals is involved, and the cost of chemical agents is high. At the same time, the use of a large number of drugs also increases the discharge of pollutants, which will pollute the environment. In addition, the repeatability of the measurement is poor, and the accuracy of the results is poor, and the errors of various test results (SiO ₂ , Fe ₂ O ₃ , Na ₂ O, and burn-off test results) are easily superimposed on Al ₂ O ₃ .

In view of this, the present invention is proposed.

Contents of the invention

The first object of the present invention is to provide a kind of simple operation, simple sample processing, short analysis cycle, no chemical pollution, high accuracy, good repeatability X-ray fluorescence spectrometry analysis of the composition content of aluminum hydroxide method, to alleviate There are problems in measuring the content of components in aluminum hydroxide in the prior art.

The second object of the present invention is to provide an aluminum hydroxide obtained after analysis by the method for analyzing the content of components in aluminum hydroxide by the X-ray fluorescence spectrometry. The third object of the present invention is to provide an application of the aluminum hydroxide as a raw material for producing float glass. The method of the invention can quickly and accurately obtain the inspection data of the component content in the aluminum hydroxide, and the application of the aluminum hydroxide to the production of float glass can ensure the component content of the glass and ensure the quality of the glass.

To achieve the above object, the technical solution adopted in the present invention is:

According to one aspect of the present invention, the present invention provides a kind of X-ray fluorescence spectrometry method analysis composition content method in aluminum hydroxide, comprises the following steps:

grinding;

powder compression;

Use X-ray fluorescence spectrometry to measure the emission intensity of each component in the sample, and use the established working curve of each component to measure Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in the aluminum hydroxide sample to be tested. content analysis.

As a further preferred technical solution, the grinding time is 15-35 minutes, and the particle size of the sample obtained by grinding is ≤200 mesh, preferably 80-150 mesh.

As a further preferred technical solution, during the powder compression process, the pressure is 30-50 MPa, and the static pressure is 20-40s.

As a further preferred technical solution, the mode of establishing the working curve of each component includes:

Provide multiple aluminum hydroxide standard samples, and the mass ratios of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in each standard sample are different;

Grinding and powder pressing the standard samples respectively to obtain standard sample pressing;

Adopt X-ray fluorescence spectrometer to measure the emission intensity of each component in the standard sample compression tablet respectively;

Perform linear regression on the intensity of X-ray fluorescence characteristic lines and the corresponding mass percentages of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O to obtain Al ₂ O ₃ , Fe ₂ O ₃ , and SiO ₂ The standard working curve of X-ray fluorescence characteristic line intensity corresponding to Na ₂ O.

As a further preferred technical solution, the number of standard samples is ≥4.

As a further preferred technical solution, the grinding time is 15-35 minutes, and the particle size of the sample obtained by grinding is ≤200 mesh, preferably 80-150 mesh;

And/or, during the powder compression process, the pressure is 30-50MPa, and the static pressure is 20-40s.

As a further preferred technical solution, the measurement conditions for the samples to be determined by X-ray fluorescence spectrometer for each component in aluminum hydroxide are respectively:

Al ₂ O ₃ : 2θ144.65, wavelength Voltage 30kV, current 80mA, spectroscopic crystal PET, collimator 0.25, PHD40~100, no interference elements, scan time 20s;

Fe ₂ O ₃ : 2θ57.53, wavelength Voltage 30kV, current 80mA, spectroscopic crystal LiF200, collimator 0.15, PHD40~100, no interference elements, scan time 20s;

SiO ₂ : 2θ109.001, wavelength Voltage 30kV, current 80mA, spectroscopic crystal PET, collimator 0.60, PHD50~95, no interference elements, scan time 12s;

Na2O: _2θ23.951 , wavelength Voltage 30kV, current 80mA, spectroscopic crystal AX06, collimator 0.60, PHD40~100, no interference elements, scan time 20s.

As a further preferred technical solution, the samples include aluminum hydroxide samples to be tested and standard sample samples.

According to another aspect of the present invention, the present invention provides an aluminum hydroxide obtained after being analyzed by the above-mentioned method for analyzing component content in aluminum hydroxide by X-ray fluorescence spectrometry.

According to another aspect of the present invention, the present invention also provides an application of the above-mentioned aluminum hydroxide as a raw material for producing float glass.

Compared with prior art, the beneficial effect of the present invention is:

1. The present invention uses X-ray fluorescence spectroscopic analysis to determine the content of chemical components in aluminum hydroxide. By grinding the aluminum hydroxide raw material, the powder is directly pressed into tablets to prepare samples, and then directly scanned with an X-ray fluorescence spectrometer to measure The content of chemical components in it. The method is easy to operate and fast in analysis speed. It can simultaneously analyze the four components of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ , and Na ₂ O in aluminum hydroxide with high accuracy and good repeatability. Powder tablet analysis to test the blank for chemical composition in aluminum hydroxide.

2. The powder tableting method of the present invention has the advantages of simple operation method, simple sample pretreatment operation, short analysis period, fast speed, high accuracy, repeatability and reproducibility are better than the chemical composition of aluminum hydroxide in the national standard The determination method has the characteristics of scientificity, advancement, applicability, scalability, no pollution, short analysis time, high accuracy, good repeatability, and non-destructive analysis.

Detailed ways

The embodiments of the present invention will be described in detail below in conjunction with the embodiments and examples, but those skilled in the art will understand that the following embodiments and examples are only for illustrating the present invention, and should not be regarded as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. If the specific conditions are not specified, follow the general conditions or the conditions suggested by the manufacturer.

In a first aspect, in at least one embodiment, there is provided a method for X-ray fluorescence spectrometry analysis of component content in aluminum hydroxide, comprising the following steps:

grinding;

powder compression;

Use X-ray fluorescence spectrometry to measure the emission intensity of each component in the sample, and use the established working curve of each component to measure Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in the aluminum hydroxide sample to be tested. content analysis.

X-ray fluorescence spectrometry (XRF) has the characteristics of accuracy, rapidity and wide analysis range, and is widely used in geology, metallurgy, machinery manufacturing, environmental protection, chemical industry and other fields. Compared with chemical analysis methods, this method has simple sample pretreatment and chemical Less reagent consumption, less waste discharge, high accuracy and precision. However, there is no complete detection method of this method applied to the determination of the content of components in aluminum hydroxide materials. Based on this, the present invention provides a method for analyzing the content of components in aluminum hydroxide by X-ray fluorescence spectrometry, which fills the blank of using X-ray fluorescence powder tablet analysis to test the chemical components in aluminum hydroxide.

The present invention uses the X-ray fluorescence spectroscopic analysis method to measure the chemical components in aluminum hydroxide, grinds the aluminum hydroxide, directly compresses the powder to prepare samples, and scans directly with an X-ray fluorescence spectrometer to measure the content of the chemical components. Simple, fast analysis speed, can simultaneously analyze four components of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ , and Na ₂ O in aluminum hydroxide. The characteristics of the present invention through the characteristic analysis of the aluminum hydroxide sample are: simple operation, repeatability and reproducibility all better than the determination method of chemical composition in the aluminum hydroxide of national standard (YS/T534.2～534.5) (GB /T6610.2～6610.5), with scientific, advanced, applicability, scalability, short analysis time, no chemical pollution, high accuracy, good repeatability, non-destructive analysis and other characteristics. Further speaking, relative to the existing standard chemical method for determining the composition content in aluminum hydroxide, the present invention mainly has the following advantages:

(1) Economic benefits: the use of a large number of chemicals is saved, and the cost of detection is reduced; the operation is simple, the configuration of operators is reduced, and the cost of personnel is reduced.

(2) Time benefit: sample pretreatment is simple and fast, and multiple elements can be determined at the same time. The analysis of a sample is shortened from the original 1-2 days to 1-2 hours, which reduces the detection time and manpower consumption, and the detection cycle is short. Solved the problem of high labor intensity and insufficient personnel.

(3) Environmental benefits: greatly reduce the use of toxic and harmful chemicals and the discharge of wastes such as waste acid, no environmental pollution, and good environmental protection benefits.

(4) The analysis error is small, the accuracy is high, and the repeatability is good. It can quickly and accurately send out the test data results, and provide favorable analysis data guidance for production in time to ensure the final product quality.

Working principle of the present invention can be understood as:

The secondary X-rays produced by X-rays irradiating on the material are called X-ray fluorescence. Each element will emit corresponding X-ray fluorescence. The emitted X-ray fluorescence is measured and converted into the types and types of various elements in the sample. content.

Action relationship:

Grinding→pressing→X-ray fluorescence spectrometer detection

The method for determining the chemical components in aluminum hydroxide by X-ray fluorescence spectroscopic analysis in the present invention comprises the following process steps: grinding the aluminum hydroxide, directly compressing the powder to prepare samples, scanning directly with an X-ray fluorescence spectrometer, and measuring The content of chemical components in it.

In a preferred embodiment, the method of the present invention mainly includes (a) establishing a standard working curve and (b) determining Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na in the aluminum hydroxide sample to be tested. ₂ O content.

Preferably, (a) establish a standard working curve, including:

1) Provide multiple aluminum hydroxide standard samples, and the mass ratios of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in each standard sample are different;

That is, when selecting standard samples, it is necessary to select at least 4 standard samples for establishing curves according to the different content levels of each element in aluminum hydroxide;

It should be noted that the number of aluminum hydroxide standard samples is not particularly limited, and those skilled in the art can select according to actual needs. According to a specific embodiment of the present invention, the number of aluminum hydroxide standard samples can be no less than 4 indivual. The inventors have found that when the number of aluminum hydroxide standard samples is not less than 4, the accuracy requirements of the follow-up standard working curve can be better met, so that the determination of aluminum hydroxide based on X-ray fluorescence spectrometry provided by the present invention The value obtained by the content of each component in the sample has smaller errors than the fixed value obtained by the chemical method.

For example, a series of standard samples can be selected according to the content of daily detection samples, and the selected series of standard samples are shown in Table 1.

Table 1 standard sample

2) Sample grinding: Weigh 5-10 grams of aluminum hydroxide standard sample in a mortar and grind it continuously for 15-35 minutes. For example, it can be ground for 15 minutes, 20 minutes, 25 minutes, 30 minutes or 35 minutes. Reach ≤200 mesh, for example, the particle size can be 200 mesh, 180 mesh, 160 mesh, 150 mesh, 120 mesh, 100 mesh, 90 mesh, 80 mesh, 60 mesh, 50 mesh or 40 mesh, etc., preferably 80-150 mesh, Ensure that the sample is uniform and meet the requirements for fluorescent powder compression.

It should be noted that the present invention does not add any auxiliary agent during the grinding process. This can not only reduce the environmental pollution caused by binders or other additives, but also further reduce the detection cost and increase the detection speed.

3) Powder compression: Use a press to perform powder compression on the standard sample to obtain a standard sample compression; specifically include: scrubbing the tray for sample compression, the inner wall, outer wall, and two sections of the plastic ring, and placing them on a 1/100 balance , clear, weigh 5 grams of the ground sample at one time, press it flat, press the sample with a press, press 30-50MPa, and press statically for 20-40s to keep the surface of the sample smooth and uniform in particle size, clean the residual powder on the edge of the plastic ring, and identify the sample stand-by. Clean the mortar and set aside. Typically but not limited, the pressure can be 30MPa, 35MPa, 40MPa, 45MPa or 50MPa, and the static pressure is 20s, 25s, 30s, 35s or 40s.

It should be noted that the present invention has no special restrictions on the specific operating parameters in the process of powder compression, and those skilled in the art can adjust them according to the actual situation, as long as the obtained compression meets the analysis and determination of the subsequent X-ray fluorescence spectrometer. . The powder compression tablet can be operated at room temperature on the equipped special press, with simple steps, fast speed and easy operation.

4) Fluorescence analysis: adopt X-ray fluorescence spectrometer to measure the emission intensity of each component in the standard sample compression tablet respectively;

The idea of determining the optimal analysis conditions in the present invention includes: selecting a sample whose chemical composition is close to the sample to be tested for scanning, generally selecting the Kα1, 2 line as the analysis line, and the maximum peak position is the actual detection peak position; the general selection principle of the spectroscopic crystal LiF is suitable for most elements in the range of Ni~Te, and PET is suitable for elements in the range of Al~Cl; factors such as light tube voltage, current, and collimator should be considered comprehensively, and the fluorescence intensity should be kept within the optimal resolution range of the instrument as much as possible. ; PHD (Pulse Height Distribution) window analysis should enlarge the window as much as possible; the background generally chooses two points as the background, when the characteristic signal intensity is more than 10 times higher than the background signal, the background intensity can be ignored to shorten the scanning time; When the signal deviation is less than 0.3%, it is regarded as the best analysis time.

The optimal analytical conditions finally determined by the present invention are shown in Table 2.

Table 2 Analysis conditions

5) Using the reflection intensity of each component measured for a series of internal control standard samples, combined with the mass percentage of each component in the sample, the X-ray fluorescence characteristic line intensity and the corresponding Al ₂ O ₃ , Fe ₂ The standard working curves of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O corresponding to X-ray fluorescence characteristic spectral line intensities were obtained through linear regression for the mass percentages of O ₃ , SiO ₂ and Na ₂ O . The working curve of each component is drawn with the mass percent content as the abscissa and the XRF measured intensity as the ordinate.

In the measured standard sample, the relevant parameters of the standard working curve associated with the percentage content of each component and the strength are shown in Table 3.

Table 3 Working Curve

project intercept slope SEE Al ₂ O ₃ 34.73322 0.04502 0.017820 _{Fe2O3 _} 0.00130 0.01348 0.000776 SiO ₂ -0.00352 0.10941 0.003793 Na ₂ O -0.05169 0.10891 0.103756

The relevant parameters of the regression equation of each component obtained in Table 3 can be programmed into the control program of the X-ray fluorescence spectrometer through computer software.

Preferably, (b) determining the content of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in the aluminum hydroxide sample to be tested includes:

1) Sample grinding;

2) Powder compression;

The specific operation mode and operating parameters of the sample grinding and powder pressing in this process are the same as the specific operating mode and operating parameters of the sample grinding and powder pressing in the establishment process of the above-mentioned standard working curve, and will not be repeated here;

3) Adopt X-ray fluorescence spectrometer to measure the emission intensity of each component in the aluminum hydroxide sample to be measured; the control program in the fluorescence spectrometer can automatically calculate the quality of each component in the aluminum hydroxide sample to be measured according to the relevant parameters in Table 3 percentage content;

The analysis conditions of the X-ray fluorescence spectrometer in this process are the same as the analysis conditions in the process of establishing the above-mentioned standard working curve, and will not be repeated here.

In a specific embodiment, the equipment adopted in the method for determining the component content in aluminum hydroxide by the method of the present invention can be, for example:

Wavelength dispersive X-ray fluorescence spectrometer; the detector is a gas flow proportional counter and a scintillation counter; the maximum power is 3.6kW;

ZHY-401A sample press; and Ф12cm agate mortar.

In order to analyze the accuracy of determining the content of each component in the sample sheet by the method of the present invention, the present invention analyzes the existing samples according to the above sample preparation method and analysis conditions, and compares with the standard value provided by commercially available products, the detection of standard chemical methods For comparison, the results of the analysis data are shown in Table 4.

Table 4 Accuracy analysis results

Test the precision of the results obtained by the method used in the present invention, get an aluminum hydroxide sample, prepare 10 sample sheets respectively according to the above-mentioned sample grinding and powder tabletting methods, adopt an X-ray fluorescence spectrometer to analyze each sample sheet according to the above-mentioned analysis conditions Determination was carried out, and the measurement results are shown in Table 5.

Table 5 precision test results

Test items Al ₂ O _{3 Fe2O3 _} SiO ₂ Na ₂ O Sample 1 64.63 0.0096 0.010 0.15 Sample 2 64.47 0.0090 0.011 0.13 Sample 3 64.75 0.0087 0.011 0.12 Sample 4 64.76 0.0088 0.010 0.14 Sample 5 64.59 0.0095 0.012 0.16 Sample 6 64.81 0.0089 0.010 0.13 Sample 7 64.57 0.0091 0.010 0.12 Sample 8 64.51 0.0094 0.011 0.13 Sample 9 64.43 0.0091 0.012 0.14 Sample 10 64.49 0.0093 0.009 0.11 average value 64.60 0.00914 0.0106 0.133 SD 0.133 0.000 0.001 0.015 RSD 0.002 0.033 0.091 0.112

Wherein, SD represents the standard deviation, and RSD represents the relative standard deviation, both values are within a reasonable range, and the detection accuracy of the method of the present invention is high.

By the comparative data of table 4 and table 5, it can be seen that the accuracy and precision of the method for analyzing the content of components in aluminum hydroxide by X-ray fluorescence spectrometry of the present invention are extremely high, and the repeatability and reproducibility are better than standard chemical methods, which can fully It replaces the standard chemical method in the prior art to determine aluminum hydroxide. Simultaneously, the method of the invention has simple operation, short analysis time, no chemical pollution and low cost.

In the second aspect, in at least one embodiment, an aluminum hydroxide obtained after being analyzed by the above-mentioned method for analyzing component content in aluminum hydroxide by X-ray fluorescence spectrometry is provided.

In a third aspect, at least one embodiment provides an application of the aluminum hydroxide as a raw material for producing float glass.

The second aspect and the third aspect of the present invention are based on the same inventive concept as the aforementioned X-ray fluorescence spectrometry method for analyzing the content of components in aluminum hydroxide, and thus at least have the same characteristics as the aforementioned X-ray fluorescence spectrometry method for analyzing the components in aluminum hydroxide. The same advantages as the method of content, the present invention will not repeat them here.

The present invention will be further described below in conjunction with specific examples.

Example 1-3

A method for analyzing the content of components in aluminum hydroxide by X-ray fluorescence spectrometry. According to the above sample grinding and powder pressing methods, three aluminum hydroxide (Shanghai aluminum hydroxide) samples are ground and processed respectively, and the powder is pressed into tablets. The samples were prepared and analyzed by X-ray fluorescence spectroscopy using the above analysis conditions and working curves, and the measured data results are shown in Table 6.

Table 6 Example 1-3 test results

project Al ₂ O _{3 Fe2O3 _} SiO ₂ Na ₂ O Example 1 65.57 0.0085 0.011 0.12 Example 2 65.12 0.0048 0.010 0.31 Example 3 64.82 0.0092 0.012 0.14

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (10)

1. a method for X-ray fluorescence spectrometry analysis of component content in aluminum hydroxide, is characterized in that, comprises the following steps: grinding; powder compression; Use X-ray fluorescence spectrometry to measure the emission intensity of each component in the sample, and use the established working curve of each component to measure Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in the aluminum hydroxide sample to be tested. content analysis. 2. X-ray fluorescence spectrometry according to claim 1 analyzes the method for component content in aluminum hydroxide, it is characterized in that, the time of grinding is 15～35min, the particle size of the sample that grinds to obtain≤200 orders, is preferably 80 ~150 mesh. 3. The method for analyzing the content of components in aluminum hydroxide by X-ray fluorescence spectrometry according to claim 1, characterized in that, during the powder compression process, the pressure is 30-50 MPa, and the static pressure is 20-40s. 4. X-ray fluorescence spectrometry according to claim 1 analyzes the method for component content in aluminum hydroxide, it is characterized in that, the mode of setting up the working curve of each component comprises: Provide multiple aluminum hydroxide standard samples, and the mass ratios of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O in each standard sample are different; Grinding and powder pressing the standard samples respectively to obtain standard sample pressing; Adopt X-ray fluorescence spectrometer to measure the emission intensity of each component in the standard sample compression tablet respectively; Perform linear regression on the intensity of X-ray fluorescence characteristic lines and the corresponding mass percentages of Al ₂ O ₃ , Fe ₂ O ₃ , SiO ₂ and Na ₂ O to obtain Al ₂ O ₃ , Fe ₂ O ₃ , and SiO ₂ The standard working curve of X-ray fluorescence characteristic line intensity corresponding to Na ₂ O. 5. the method for X-ray fluorescence spectrometry analysis composition content in aluminum hydroxide according to claim 4, is characterized in that, the quantity of standard sample is ≥ 4. 6. X-ray fluorescence spectrometry according to claim 4 analyzes the method for component content in aluminum hydroxide, it is characterized in that, the time of grinding is 15～35min, the particle size of the sample that grinds to obtain≤200 order, is preferably 80 ~150 mesh; And/or, during the powder compression process, the pressure is 30-50MPa, and the static pressure is 20-40s. 7. according to the method for X-ray fluorescence spectrometry analysis composition content in aluminum hydroxide described in any one of claim 1～6, it is characterized in that, utilize X-ray fluorescence spectrometer to measure the measuring condition of each composition in aluminum hydroxide to sample They are: Al ₂ O ₃ : 2θ144.65, wavelength Voltage 30kV, current 80mA, spectroscopic crystal PET, collimator 0.25, PHD40~100, no interference elements, scan time 20s; Fe ₂ O ₃ : 2θ57.53, wavelength Voltage 30kV, current 80mA, spectroscopic crystal LiF200, collimator 0.15, PHD40~100, no interference elements, scan time 20s; SiO ₂ : 2θ109.001, wavelength Voltage 30kV, current 80mA, spectroscopic crystal PET, collimator 0.60, PHD50~95, no interference elements, scan time 12s; Na2O: _2θ23.951 , wavelength Voltage 30kV, current 80mA, spectroscopic crystal AX06, collimator 0.60, PHD40~100, no interference elements, scan time 20s. 8. The method for analyzing component content in aluminum hydroxide by X-ray fluorescence spectrometry according to claim 7, characterized in that, the samples include aluminum hydroxide samples to be measured and standard sample samples. 9. The aluminum hydroxide obtained after analyzing the method for analyzing the composition content in aluminum hydroxide by X-ray fluorescence spectrometry according to any one of claims 1 to 8. 10. the application of the aluminum hydroxide described in claim 9 as the raw material for producing float glass.