Online measuring device for photo ionization efficiency curve of cigarette smoldering side-stream smoke gas phase composition

Abstract

The invention discloses an online measuring device for a photo ionization efficiency curve of a cigarette smoldering side-stream smoke gas phase composition. The online measuring device is characterized in that a non-combustion end of a cigarette is inserted into a cigarette insertion seat of a stepping cigarette sampler capable of controlling the movement direction and speed of the cigarette; a combustion end extends into the internal center of a rough end part of a fishtail cover; the outlet of a fine end part of the fishtail cover is connected with a flowmeter and a membrane vacuum pump insequence through a Cambridge filter clamper and a smoke flow pipe; a smoke flow pipe between the Cambridge filter clamper and the flowmeter communicates with one port of a smoke transmission quartz capillary passing through the pipe wall; and the other port of the smoke transmission quartz capillary passes through a cavity wall of a photo ionization flight time mass spectrometer and enters a vacuum-ultraviolet photo ionization area. The online measuring device is simple in structure, and is suitable for online measurement of the photo ionization efficiency curve of the cigarette smoldering side-stream smoke gas phase composition, so that the online authentication function for a geometric isomer is realized.

Description

technical field [0001] The invention belongs to the technical field of analysis of chemical components of cigarette smoke, and in particular relates to an on-line measurement device for the photoionization efficiency curve of the gas phase components of smoldering sidestream smoke of cigarettes, so as to realize the homogeneity and differentiation of the gas phase components of smoldering sidestream smoke of cigarettes The function of online identification of conformation. Background technique [0002] Combustion of a cigarette usually includes two modes of smoking and smoldering, wherein smoking refers to the burning of a cigarette when it is sucked, and smoldering refers to the natural combustion of a cigarette during the smoking interval. Due to the different combustion modes of cigarette smoking and smoldering, two forms of cigarette smoke are produced, namely mainstream smoke and sidestream smoke. The smoke drawn from the filter end of the cigarette during smoking is c...

AI Technical Summary

Problems solved by technology

When the smoking machine periodically smokes cigarettes, the side stream smoke will be generated periodically, which cannot provide a stable smoke sampling flow

Even when the smoking machine does not smoke and let the cigarette smolder naturally, as the cigarette burns, the length of the cigarette gradually becomes shorter, and the cigarette burning cone gradually approaches the fishtail cover, which will cause more smoke. The gas is adsorbed on the side wall of the fishtail hood; on the other hand, due to the different air velocity in different parts of the fishtail hood, the combustion state of the cigarette combustion cone will be different, which will also affect the stability of the sidestream smoke injection flow. sex

Therefore, this type of analysis device is not suitable for online measurement of the photoionization efficiency curve of cigarette sidestream smoke, and there is no report on the measurement method and device of the photoionization efficiency curve of cigarette sidestream smoke components.

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