Portable minitype Raman spectrometer non-contact integrated sampling device

Abstract

The invention discloses a portable minitype Raman spectrometer non-contact integrated sampling device. The portable minitype Raman spectrometer non-contact integrated sampling device comprises a probe fixing part and a sample plug-in part; the probe fixing part comprises a sample supporting pedestal and a probe positioning base; the sample supporting pedestal is provided with a T-shaped groove and a round head positioning screw with an upwards arranged round head; the probe positioning base is arranged above the sample supporting pedestal, and is in mounting connection with the supporting pedestal; the probe positioning base is coaxially provided with a probe ocular lens through hole and a threaded mounting counter bore; the sample plug-in part comprises a sample supporting plug-in plate and a sample base plate; a sample base plate positioning mechanism and a plurality of positioning pits are arranged on the sample plug-in plate; and the sample base plate is positioned and mounted on the upper surface of the sample supporting plug-in plate through the sample base plate positioning mechanism. The portable minitype Raman spectrometer non-contact integrated sampling device is simple in structure, can detect samples rapidly on the premise of facilitating stable control on the incident angle of a spectrometer probe, and is particularly suitable for a handheld minitype spectrometer.

Description

technical field [0001] The invention relates to a sampling device, in particular to a non-contact integrated sampling device suitable for a portable miniature Raman spectrometer, and belongs to the technical field of Raman spectrum detection. Background technique [0002] Raman spectroscopy is a kind of scattering spectrum. Raman spectroscopy is an analysis method that analyzes the scattering spectrum with a different frequency from the incident light to obtain information on molecular vibration and rotation and is applied to the study of molecular structure. Usually, laser light is used. The spectral information obtained at the molecular level of the substance is widely used in surface research in the fields of food safety, drug testing, drug detection, judicial identification, jewelry identification and environmental testing, research on the surface state of adsorption interfaces, interface orientation and configuration of biological molecules , conformational research, st...

AI Technical Summary

Problems solved by technology

[0004] At present, the existing spectrometer has a probe with the function of enhancing the Raman signal, such as making the shape of the detection fiber into a tapered shape, and welding a quartz microsphere at the tip, and coating the surface of the tapered optical fiber and the quartz microsphere Even if metal nanoparticles are formed into a probe with Raman enhancement function, the detection process is usually to place the surface-enhanced Raman scattering active substrate on the sample platform and irradiate the substrate sample with laser light at a certain incident angle through the probe of the spectrometer. For detection, although the spectrometer is connected to the computer, various analysis curves, charts, etc. can be directly displayed on the computer through the supporting software, but for portable handheld miniature spectrometers, there is usually no matching sample platform to control the fixed incident angle and accuracy. It is usually difficult to adjust the focal length. It is usually necessary to configure a small sample platform and fix the micro-spectrometer on the sample platform before adjusting the focal length. In order to avoid the probe from contacting the sample and causing damage to the sample, and then causing errors in the detection data, the focal length adjustment link It is very important. Accurate focusing operation usually requires patience and meticulousness, which can easily lead to a lot of time-consuming and low detection efficiency.

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