Method for measuring pH value of mainstream full smoke of cigarettes

Abstract

The invention belongs to the field of chemical analysis of tobaccos, and particularly relates to a method for measuring a pH value of mainstream full smoke of cigarettes. The technical problem that the pH value of the mainstream smoke of the cigarette cannot be completely collected by adoption of conventional measurement in the prior art is solved. The method comprises the following steps: smoking10 to 60 cigarettes by using a smoking machine under a standard smoking condition, and capturing the mainstream full smoke by adopting an XAD-2 suction pipe and a series cold trap device; taking outa suction agent in the XAD-2 suction pipe, and performing oscillating extraction to obtain an extracting solution; combining sucked liquid in all series suction bottles in the series cold trap device,combining the combined sucked liquid and the extracting solution to obtain a combined solution; measuring the combined solution with a precision pH meter, thereby obtaining the pH value of the mainstream full smoke of the cigarettes. By use of three capturing modes of solid particle suction, solvent capturing and cold trap capturing, the method is better in capturing effect and can reflect the pHvalue of the mainstream full smoke of the cigarettes more accurately.

Description

technical field [0001] The invention belongs to the field of chemical analysis of tobacco, in particular to a method for measuring the pH value of mainstream whole smoke of cigarettes. Background technique [0002] Cigarette mainstream smoke refers to the stream of smoke that escapes from the end of a cigarette during smoking. Mainstream smoke enters the smoker's mouth and is inhaled into the lungs through the larynx to stimulate nerves and generate physiological strength. [0003] The pH value of mainstream smoke is one of the important reference indicators for the overall quality of cigarettes. It can reflect the balance relationship between the chemical components of mainstream smoke. , pH test paper measurement results have certain limitations, subjective factors are relatively large, and then there are various measurement methods such as pH meter and electrode method. At present, the method of measuring the pH value of mainstream whole flue gas mainly adopts the metho...

AI Technical Summary

Problems solved by technology

[0008] The invention proposes a method for measuring the pH value of mainstream cigarette smoke, which solves the technical problem that conventional measurement of the pH value of cigarette mainstream smoke cannot be completely captured in the prior art, and provides a method for accurately measuring the pH value of mainstream cigarette smoke. pH method

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