Optical analysis method

Optical analysis method is a kind of analysis method based on the interaction between the light radiation energy and matter (luminescence, absorption, scattering, photoelectron emission, etc.).It belongs to a kind of important method in instrument analysis, which can be divided into two kinds: spectral method and non-spectral method.Spectral analysis is based on the measurement of the internal relation between the energy of light radiation and the composition and structure of matter and its manifestation, spectrum (or spectrum).Non-spectral analysis, which does not include changes in the internal energy of matter, but based on changes in radiation direction and physical properties caused by matter.

Spectral method can be divided into three basic types:

1. Luminescence spectroscopy

Including atomic emission spectrometry, atomic fluorescence spectrometry, molecular fluorescence analysis, X-ray fluorescence analysis, electronic energy spectrum analysis.

2. Absorption spectroscopy

Including uv spectrophotometry, infrared spectrophotometry, electron spin resonance and nuclear magnetic resonance spectrometry, musball spectrometry, atomic absorption spectrometry, etc.

3. Scattering spectrum method

The main method is Raman scattering spectrum.Non-spectral methods include refraction, polarization, rotatory dispersion, circular dichroism, X-ray diffraction and turbidity analysis.