Building method and prediction method of cigarette total smoke pH value prediction model

Abstract

The invention relates to a method for predicting a cigarette total smoke pH value and belongs to the technical field of tobacco. According to the method, the cigarette total smoke pH value and cigarette particulate matter pH value are subjected to stepwise regression analysis to obtain a regression formula of the particulate matter pH value and the total smoke pH value, namely, Y=0.1603+0.9685X, wherein the average relative error of prediction of the total smoke pH value is smaller than 1%, and prediction results are accurate. Operation steps for total smoke pH value prediction are greatly simplified, people only need to measure the particulate matter pH value of cigarettes to well predict the cigarette total smoke pH value, and testing of smoke gaseous-phase matter and detection conducted after particulate matter extract and gaseous-phase matter absorbing liquid are mixed are avoided; compared with a smoke water extraction pH method, efficiency is improved by at least 50%, and cost is reduced by at least 60%. The method and a method T-113 recommended by the ministry of health of Canada are compared, results show that results obtained through the two methods are highly consistent, and comparability is achieved.

Description

Technical field [0001] The invention belongs to the technical field of tobacco, and in particular relates to a method for constructing a prediction model for the total smoke pH value of cigarettes and a prediction method thereof. Background technique [0002] Smoke pH is one of the comprehensive indicators reflecting the overall quality of cigarettes. It can reflect the acid-base balance of the chemical components of the smoke and the existence of smoke nicotine. It is also an important parameter of the quality of cigarette smoke. The analysis and detection method of pH value has always been a hot issue of research. [0003] There are many methods for measuring the pH of mainstream cigarette smoke, but there is no uniform measuring standard. At present, there are two main methods for determining the pH of cigarette smoke: the "flue gas water extract pH method" and the "flue gas pH / electrode method". The "flue gas water extract pH method" mainly adopts the measurement method that ...

AI Technical Summary

Problems solved by technology

The "flue gas water extract pH method" mainly uses the measurement method to measure the pH value after mixing the particulate phase extract and the gas phase absorbing liquid as the pH value of the whole flue gas. The method is cumbersome, time-consuming and laborious.

The "flue gas pH / electrode method" mainly uses a special electrode coated with water-soluble gel or buffer solution to insert into the mainstream flue gas passage to measure the pH value. The method needs to be modified to the existing smoking machine, and its universality is poor. , not easy to popularize and apply

Images