Separation-collection device for gas-phase nicotine and particle-phase nicotine in aerosol and method of separation-collection device

Abstract

The invention relates to a separation-collection device for gas-phase nicotine and particle-phase nicotine in aerosol. The separation-collection device comprises a clamping device, a filter piece capturing device and a dump pump. The separation-collection device is characterized in that an dispersion pipe is arranged between the clamping device and the filter piece capturing device and is locatedin a constant-temperature water bath, the inner wall of the dispersion pipe is coated with a citric acid solid coating layer, and the dispersion pipe is a high-purity silica glass straight pipe with an inner diameter of 8mm and a length of 1000mm. The device for separating the gas-phase nicotine and the particle-phase nicotine has the principle that smoke aerosol containing the gas-phase nicotineand the particle-phase nicotine is pumped into the dispersion pipe in certain flow with a laminar flow state by virtue of the pump, the radial diffusion rate of the gas-phase nicotine is larger than that of the particle-phase nicotine because of the difference of mass transfer dispersion coefficients of the gas-phase nicotine and the particle-phase nicotine, the gas-phase nicotine is firstly absorbed by the citric acid solid coating layer on the inner wall of the dispersion pipe, and the particle-phase nicotine flows out of the dispersion pipe along the axial motion of the aerosol and is captured and absorbed by virtue of a Cambridge filter at an outlet of the dispersion pipe, so that the gas-phase nicotine and the particle-phase nicotine are separated and are respectively captured.

Description

technical field [0001] The invention relates to the field of sample pretreatment of gas-phase and particle-phase nicotine in aerosols, specifically a device for separating and collecting gas-phase nicotine and particle-phase nicotine in aerosols and a method thereof. The invention can realize gas-phase nicotine at different temperatures , Separation, collection and quantitative detection of particulate nicotine. Background technique [0002] Tobacco contains a variety of alkaloids, among which nicotine (also known as nicotine, chemical name 1-methyl-2-(3-pyridyl) pyrrolidine) has the highest content, accounting for about 95% of the total tobacco alkaloids. The mainstream flue gas produced by combustion and cracking forms a flue gas aerosol in which the gas and particle phases coexist after condensation, crystal nucleation, and condensation. Nicotine is one of the important components of cigarette mainstream smoke and an important factor affecting the sensory quality of ciga...

AI Technical Summary

Problems solved by technology

At present, the capture method of nicotine in smoke is mainly to use the filter capture method to obtain the release amount of nicotine in the particle p

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