Waveguide tube device of multichannel fluorescence detector

Abstract

The utility model belongs to the technical field of fluorescence quenching, and provides a multichannel fluorescence detector waveguide tube device, which comprises a waveguide tube, and the waveguide tube comprises a middle section and an edge section. The middle section and the edge sections are both of sleeve structures, the edge sections are coaxially arranged at the two ends of the middle section, the inner diameter of the middle section is smaller than that of the edge sections, the middle section and the edge sections are bonded and fixed, and the inner wall of the middle section and the inner walls of the edge sections are both used for being coated with fluorescent materials. According to the waveguide tube device of the multichannel fluorescence detector, the waveguide tube is divided into three sections, and each section can be independently coated. And because each section is small in length, the solvent is easier to volatilize, the curing time is short, and the production efficiency is high. Meanwhile, because the volatilization time is short, the influence of polymerization precipitation of the fluorescent material is limited, and the coating is more uniform. Secondly, the inner diameter of the middle section is smaller than that of the edge section, so that detection airflow can generate turbulent flow on the inner pipe wall, the contact probability of detection object molecules and the fluorescent material is increased, and the sensitivity is further improved. And common detection of dangerous goods such as explosives and drugs is realized.