Particle size measuring method, particle size measuring device and quality control method using it

摘要

PROBLEM TO BE SOLVED: To provide a particle diameter measuring method capable of easily identifying a material while measuring particle diameter, and a particle diameter measuring apparatus and a quality management method using the same.SOLUTION: Disclosed particle diameter measuring method includes the steps of: irradiating near infrared light to an object to be detected; detecting Raman spectrum of the object to be detected; and determining the particle diameter of the object to be detected from the peak strength of the obtained Raman spectrum. The near infrared light may have wavelength of 1064nm. The object to be detected may be detected from the detected Raman spectrum, and the particle diameter of a material identical to the identified object to be detected may be calculated based on a relationship between the peak strength of a predetermined Raman spectrum and particle diameter of the object to be detected.SELECTED DRAWING: Figure 1