A handheld micro-Raman spectrometer and method for detecting microplastics in liquor

Abstract

The present invention relates to the technical field of handheld Raman micro-spectroscopy, and specifically to a handheld Raman micro-spectroscopy for detecting microplastics in liquor, comprising a main housing, a probe cover installed on the top of the main housing, and a detection head installed inside the probe cover. The present invention, by arranging a narrow-band filter at the emission detection end of the detection head, the narrow-band filter has a narrow passband width, can more accurately select light in a specific wavelength range, and only allow light in a wavelength range corresponding to the characteristic Raman shift of microplastics to pass, which can reduce the interference of other irrelevant wavelengths of light, improve the resolution of the spectrum, and improve the detection sensitivity. Through the setting of a switching mechanism and a limit assembly, the narrow-band filter can be rotated and stored when it is not needed, avoiding leakage, bumping and damage, and will not affect the normal use of the original handheld Raman micro-spectroscopy. It can also be quickly rotated and replaced when it is needed, and the overall free switching is simple to operate and convenient to use.

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