Although both methods detect fluorescence after exciting a substance, they are very different. From a general point of view, there are two main points: First, the excitation light sources are different. There are many light sources used in atomic fluorescence, such as various lasers, but X-rays are rarely used, while X-ray fluorescence uses X-rays as the excitation light source. 2. Different uses. Original fluorescence is mainly used for quantitative analysis, especially quantitative analysis of metallic elements, while X-ray fluorescence is mainly used for qualitative analysis and structural analysis. Of course, the structure of the instrument, the method of use, the detection range, the sample preparation, etc. are all subject to change. are different from both.
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Different, the spectrometer uses atomic pairing of light. When the sample is irradiated with X-rays, the sample can be excited to emit fluorescent X-rays of different wavelengths. divided according to wavelength (or energy) are separated and the intensity of X-rays of different wavelengths (or energies) is measured separately for qualitative and quantitative analysis. The instrument used for this purpose is called an X-ray fluorescence spectrometer. Since X-rays have a certain wavelength and energy, there are two basic types of X-ray fluorescence spectrometers: wavelength dispersion and energy dispersion.