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Qualitative and quantitative analysis

Qualitative and quantitative analysis

Phase analysis of x-ray diffraction is a technique for analyzing the structure of a substance by utilizing the diffraction effect of X-rays in a crystalline substance. Each crystal material has its specific crystal structure, including lattice type, crystal plane spacing and other parameters. The sample is irradiated with x-rays of sufficient energy, and the substance in the sample is excited to produce secondary fluorescent X-rays (identifying X-rays), and the crystal plane reflection of the crystal follows Bragg's law. Qualitative analysis of the compound can be performed by measuring the position of the diffraction angle (peak position).

Quantitative analysis of phase analysis of X-ray diffraction has been widely used in the research of materials science and engineering. X-ray diffraction phase analysis includes conventional methods such as internal standard method, external standard method, adiabatic method, incremental method, standard-free method, basic flushing method and full-spectrum fitting method.


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