What are the common detection methods for component analysis? Material composition analysis can be divided into three aspects: determination of material structure, observation of material morphology, and analysis of material composition. Material composition analysis mainly involves qualitative and quantitative analysis of the composition of samples through various detection methods. Here are several common methods for analyzing material composition:

1. Chemical analysis method: An analytical method based on chemical reactions of substances, called chemical analysis method. Each substance has its unique chemical characteristics, and we can utilize chemical reactions between substances and characterize them in an appropriate way to indicate the process of the reaction, thereby obtaining the content of certain combination components in the material;

2. Atomic spectroscopy: Atomic spectroscopy is a spectrum of the intensity of photons absorbed or emitted by atoms relative to photon energy (usually expressed in wavelength), which can provide relevant information about the chemical composition of a sample. Atomic spectroscopy is divided into three categories: atomic absorption spectroscopy, atomic emission spectroscopy, and atomic fluorescence spectroscopy;

3. X-Ray Energy Dispersion Spectroscopy (EDX): EDX is often used in conjunction with electron microscopy to measure the wavelength and intensity of characteristic X-rays generated by the interaction between electrons and the sample, in order to qualitatively or quantitatively analyze the elements contained in small areas. Each element has a characteristic X-ray of a specific wavelength corresponding to it, which does not change with the energy of the incident electron. By measuring the type of characteristic X-ray wavelength generated by electron excitation of the sample, the type of element present in the sample can be determined. The content of an element is directly proportional to the characteristic X-ray intensity generated by the element, and based on this, the content of the element can be determined;

4. Electron spectroscopy analysis method: Electron spectroscopy analysis method uses a monochromatic light source or electron beam to irradiate the sample, excite and emit electrons in the sample, and then measure the intensity and energy distribution of these electrons to obtain material information. The sampling depth of electron spectroscopy is only a few nanometers, so it is only a reaction of surface components;


5. X-ray diffraction (XRD): XRD can also assist in quantitative analysis of phases. It is based on the fact that the diffraction intensity of the phase increases with increasing content. But it is not proportional and needs to be corrected. The Jade program can be used for quantitative analysis of the phase;

6. Mass spectrometry (MS): It is an analytical method that ionizes the substance being measured, separates according to the mass to charge ratio of ions, and measures the intensity of various ion spectral peaks to achieve analytical purposes. Quality is one of the inherent characteristics of matter, and different substances have different mass spectra (referred to as mass spectrometry). By utilizing this property, qualitative analysis can be conducted; The peak intensity is also related to the compound content it represents and can be used for quantitative analysis;

7. Spectrophotometer method: The spectrophotometer uses a light source that can generate multiple wavelengths, and through a series of spectroscopic devices, a specific wavelength light source is generated. After the light passes through the tested sample, some of the light is absorbed, and the absorbance value of the sample is calculated, which is converted into the concentration of the sample. The absorbance value is directly proportional to the concentration of the sample. It includes a visible spectrophotometer and a ultraviolet spectrophotometer;

8. Spark Direct Reading Spectrometer: Spark Direct Reading Spectrometer uses the high temperature of electric sparks to directly vaporize and excite the elements in the sample from the solid state, emitting the characteristic wavelengths of each element. After being separated by a grating, it becomes a "spectrum" arranged by wavelength. The characteristic spectral lines of these elements pass through the exit slit and enter their respective photomultiplier tubes, and the optical signal becomes an electrical signal, The electrical signal is integrated and analog-to-digital converted by the instrument's control measurement system, and then processed by a computer to print out the percentage content of each element.