CN105974063B - A kind of construction method and its prediction technique of the full smoke pH prediction model of cigarette - Google Patents
A kind of construction method and its prediction technique of the full smoke pH prediction model of cigarette Download PDFInfo
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Abstract
The present invention relates to a kind of methods for predicting the full smoke pH of cigarette, belong to technical field of tobacco.The full smoke pH of cigarette and cigarette granule phase substance pH value are carried out stepwise regression analysis by this method, obtain the regression equation of granule phase substance pH value Yu full smoke pH: Y=0.1603+0.9685X, for the prediction average relative error of its full smoke pH less than 1%, prediction result is accurate.The present invention enormously simplifies the operating procedure of full smoke pH detection, it is only necessary to measure cigarette granule phase substance pH value, the full smoke pH that can preferably predict cigarette is avoided after test and granule phase substance extract liquor and gas gas-phase objects absorbing liquid to flue gas gas gas-phase objects mix and is detected；Compared with flue gas water extract pH method, efficiency at least improves 50%, cost savings at least 60%.This method and Her Majesty the Queen in right of Canada as represented by the minister of Healt recommended method T-113 have carried out Comparability test, the results showed that 2 kinds of method acquired results height are consistent, are comparable.
Description
Technical field
The invention belongs to technical field of tobacco, and in particular to a kind of construction method of the full smoke pH prediction model of cigarette and
Its prediction technique.
Background technique
Smoke pH is one of the overall target of cigarette total quality reflection, it can reflect out the acid of smoke chemistry ingredient
The existing forms of soda balance relationship and smoking nicotine, while being also an important parameter of smoking property of cigarette quality, therefore flue gas pH
The analyzing detecting method of value has been a hot spot of research problem.
The measuring method of cigarette mainstream flue gas pH has very much, but without unified measurement standard.Measurement cigarette cigarette at present
There are mainly two types of the method for gas pH is summed up: " flue gas water extract pH method " and " flue gas pH/ electrode method "." flue gas water extraction
The measuring method that liquid pH method " mainly uses is to mix the pH value measured after granule phase substance extract liquor and gas gas-phase objects absorbing liquid as full cigarette
Gas pH value, method is cumbersome, time-consuming and laborious." flue gas pH/ electrode method " is mainly using molten coated with water-soluble glue or buffering
In the extraordinary electrode insertion main flume access of liquid, to measure pH value, method needs to be transformed existing smoking machine, universality
It is poor, it is not easy to promote and apply.Therefore the problem of how overcome the deficiencies in the prior art is current technical field of tobacco urgent need to resolve.
Summary of the invention
It is an object of the present invention to solve the deficiency of the existing technology and provide a kind of full smoke pH prediction models of cigarette
Construction method and its prediction technique, the prediction technique can preferably predict cigarette it is only necessary to measure cigarette granule phase substance pH value
Full smoke pH, method simple possible, application easy to spread.
To achieve the above object, The technical solution adopted by the invention is as follows:
A kind of construction method of the full smoke pH prediction model of cigarette, includes the following steps:
Step (1), chooses the cigarette sample of multiple trades mark；The tar content coverage area of the cigarette sample be 3~
13mg/ branch, nicotine content in smoke coverage area are 0.3~1.2mg/ branch；The trade mark quantity is greater than 10；
Step (2), the 8-12 branch that the cigarette sample of each trade mark is chosen are aspirated same according to standard conditions on smoking machine
All cigarette samples of one trade mark, and the granule phase substance of the trade mark cigarette is collected with cambridge filter, cambridge filter is then placed in 23-
In 26mL extract liquor after oscillation extraction 29-31min, the pH value of extract liquor is measured to get granule phase substance pH value is arrived；Then with being equipped with
The absorption bottle of 23-26mL absorbing liquid absorbs flue gas, after the completion of suction, measures the pH value of absorbing liquid in absorption bottle to get gas phase is arrived
Object pH value；
It according to volume ratio is that 1:1 is mixed that the extract liquor, which is distilled water and isopropanol,；
It according to volume ratio is that 1:1 is mixed that the absorbing liquid, which is also distilled water and isopropanol,；
Step (3) takes isometric step (2) to extract the extract liquor of cambridge filter and absorbed the absorbing liquid of flue gas,
Survey pH value after mixing to get full smoke pH is arrived；
Step (4), using granule phase substance pH as independent variable X, full smoke pH carries out regression analysis as response variable Y, obtains
To regression equation: Y=0.1603+0.9685X, the regression equation are the full smoke pH prediction model of cigarette.
It is further preferred that the cigarette sample includes blended type cigarette sample and Virginian-type cigarette sample.
It is further preferred that the construction method of the full smoke pH prediction model of the cigarette, includes the following steps:
Step (1), chooses the cigarette sample of multiple trades mark；The tar content coverage area of the cigarette sample be 3~
13mg/ branch, nicotine content in smoke coverage area are 0.3~1.2mg/ branch；The trade mark quantity is greater than 10；
Step (2), according to standard conditions, is aspirated same on smoking machine by 10 of the cigarette sample selection of each trade mark
All cigarette samples of the trade mark, and the granule phase substance of the trade mark cigarette is collected with cambridge filter, cambridge filter is then placed in 25mL
In extract liquor after oscillation extraction 30min, the pH value of extract liquor is measured to get granule phase substance pH value is arrived；Then it is absorbed with equipped with 25mL
The absorption bottle of liquid absorbs flue gas, after the completion of suction, measures the pH value of absorbing liquid in absorption bottle to get gas gas-phase objects pH value is arrived；
It according to volume ratio is that 1:1 is mixed that the extract liquor, which is distilled water and isopropanol,；
It according to volume ratio is that 1:1 is mixed that the absorbing liquid, which is also distilled water and isopropanol,；
Step (3) takes isometric step (2) to extract the extract liquor of cambridge filter and absorbed the absorbing liquid of flue gas,
Survey pH value after mixing to get full smoke pH is arrived；
Step (4), using granule phase substance pH as independent variable X, full smoke pH carries out regression analysis as response variable Y, obtains
To regression equation: Y=0.1603+0.9685X, the regression equation are the full smoke pH prediction model of cigarette.
The present invention also provides a kind of prediction techniques of the full smoke pH of cigarette, predict mould using the full smoke pH of above-mentioned cigarette
The full smoke pH prediction model of cigarette of the construction method building of type, which comprises the steps of:
Step (1) detects the granule phase substance pH value of cigarette sample to be measured；
The granule phase substance pH value measured is predicted mould by step (1)
Type: the value of Y=0.1603+0.9685X, you can get it response variable Y, which is the full smoke pH of cigarette sample to be measured.
It is further preferred that the specific method of step (1) is: the 8-12 of selection props up cigarette sample to be measured, according to standard
Condition aspirates all cigarette samples to be measured on smoking machine, and the granule phase substance of the cigarette sample to be measured is collected with cambridge filter, so
Cambridge filter is placed in 23-26mL extract liquor afterwards and after oscillation extraction 29-31min, measures the pH value of extract liquor to get grain phase is arrived
Object pH value；
It according to volume ratio is that 1:1 is mixed that the extract liquor, which is distilled water and isopropanol,.
Compared with prior art, the present invention has the advantages that:
Prediction technique of the present invention can preferably predict the full flue gas pH of cigarette it is only necessary to measure cigarette granule phase substance pH value
Value, in this way can to avoid to flue gas gas gas-phase objects test and granule phase substance extract liquor and gas gas-phase objects absorbing liquid mix after examine
It surveys, enormously simplifies detecting step, compared with flue gas water extract pH method, efficiency at least improves 50%, meanwhile, cost savings
At least 60%.
The model constructed through the invention predicts full flue gas pH, and method is more convenient；This method and Her Majesty the Queen in right of Canada as represented by the minister of Healt
Recommended method T-113 (" flue gas pH/ electrode method ") has carried out Comparability test, the results showed that and 2 kinds of method acquired results height are consistent,
It is comparable.
Detailed description of the invention
Fig. 1 present invention has neither part nor lot in the full flue gas pH predicted value of 34 trade mark cigarette samples and actual value correlativity of modeling
Figure；
Fig. 2 present invention has neither part nor lot in the full flue gas pH predicted value of 34 trade mark cigarette samples and actual value residual plot of modeling.
Note: Fig. 1 and Fig. 2 is 34 data, wherein having the data of 4 overlappings, so only 30 points.
Specific embodiment
Below with reference to embodiment, the present invention is described in further detail.
It will be understood to those of skill in the art that the following example is merely to illustrate the present invention, and it should not be regarded as limiting this hair
Bright range.In the examples where no specific technique or condition is specified, described technology or conditions according to the literature in the art
Or it is carried out according to product description.Reagents or instruments used without specified manufacturer is that can be obtained by purchase
Conventional products.
The present invention is mainly to granule phase substance pH value, gas gas-phase objects pH value and full smoke pH as the index to be studied.This hair
The bright finished cigarettes sample using 45 trades mark is as modeling sample, including 14 trade mark mixed type samples and 31 trades mark
Fire-cured tobacco type sample, tar content coverage area are 3~13mg/ branch, and nicotine content in smoke coverage area is 0.3~1.2mg/ branch.
10 of the cigarette sample selection of each trade mark, according to standard conditions, aspirate the institute of the same trade mark on smoking machine
There is cigarette sample, and collect granule phase substance with cambridge filter, 25mL extract liquor (distilled water and isopropyl are used in 50mL stuffed conical flask
Alcohol volume ratio is 1:1), after oscillation extraction 30min, measure the pH value i.e. granule phase substance pH value of extraction solution；And it is hinged with and is inhaled with 25mL
The absorption bottle for receiving liquid (distilled water is 1:1 with isopropanol volume ratio) absorbs flue gas, its pH value i.e. gas gas-phase objects are measured after the completion of suction
PH value；12.5ml absorbing liquid and extract liquor are taken respectively, and mixing shakes up, and surveying pH value is full smoke pH.
By table 1-3 it is found that 45 brand R=0.9963, illustrate to have between granule phase substance pH and total flue gas pH obvious
Positive correlation.Using granule phase substance pH as independent variable, total flue gas pH carries out regression analysis as response variable and obtains regression equation:
Y=0.1603+0.9685X (R2=0.9925).The results of analysis of variance show regression equation reach it is extremely significant it is horizontal (P <
0.001), and regression equation intercept and coefficient reach P < 0.05, it can using the regression equation as more satisfactory prediction
Model come using.
The regression equation R and R of 1 granule phase substance pH value of table and total smoke pH2Information table
| Coefficient of multiple correlation R | R2 | Adjust R2 | Standard error |
| 0.9963 | 0.9925 | 0.9924 | 0.0165 |
The regression equation significance test table of 2 granule phase substance pH value of table and total smoke pH
| Freedom degree | Quadratic sum | It is square | F value | P value | |
| Regression analysis | 1 | 1.5494 | 1.5494 | 5724.205 | 2.2032E-47 |
| Residual error | 43 | 0.0116 | 0.0003 | ||
| It amounts to | 44 | 1.5611 |
The regression equation coefficient information table of 3 granule phase substance pH value of table and total smoke pH
| Coefficient | Standard error | T value | P value | |
| Intercept | 0.1603 | 0.0798 | 2.0095 | 0.05 |
| Granule phase substance pH | 0.9685 | 0.0128 | 75.6585 | 2.2E-47 |
It is found through the studies above, granule phase substance extract liquor is the buffering higher buffer system of efficiency, with gas gas-phase objects absorbing liquid
Mixing total flue gas pH is influenced it is smaller, there are stronger correlation between granule phase substance pH and total flue gas pH, and this method and plus
The Ministry of Public Health recommended method T-113 (" flue gas pH/ electrode method ") that puts on airs has carried out Comparability test, the results showed that knot obtained by 2 kinds of methods
Fruit height is consistent, is comparable and (is shown in Table 4).
42 kinds of method comparison results of table
Further to illustrate the desired effects of the invention reached, using 34 trade mark cigarette samples for having neither part nor lot in modeling
Product, tar content range are 4.8~12.9mg/ branch, detection each sample granule phase substance pH value, gas gas-phase objects pH value and mixed full cigarette
Gas pH measured value, and its full smoke pH is predicted with built regression equation.
10 of the cigarette sample selection of each trade mark, according to standard conditions, aspirate the institute of the same trade mark on smoking machine
There is cigarette sample, and collect the granule phase substance of the trade mark cigarette with cambridge filter, 25mL extract liquor is used in 50mL stuffed conical flask
(distilled water and isopropanol volume ratio be 1:1) after oscillation extraction 30min, measures the pH value i.e. granule phase substance pH value of extraction solution.
Following regression equation is substituted into using the granule phase substance pH value measured as independent variable X:
Y=0.1603+0.9685X (R2=0.9925)
The value of you can get it response variable Y, which is the full flue gas pH of cigarette sample to be measured, wherein R2To determine system
Number.
The Relative Error of each sample and the prediction average relative error of all samples are calculated simultaneously, the results are shown in Table
5, table 6, Fig. 1 and Fig. 2.
Test result shows that full flue gas pH predicted value and measured value difference are smaller, and the prediction result of prediction model is accurate.
The cigarette sample granule phase substance of 5 34 trades mark of table and full smoke pH detection data
The full flue gas pH measured value of the cigarette sample of 6 34 trades mark of table and predicted value compare
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of construction method of the full smoke pH prediction model of cigarette, which comprises the steps of:
Step (1), chooses the cigarette sample of multiple trades mark；The tar content coverage area of the cigarette sample is 3 ~ 13mg/ branch,
Nicotine content in smoke coverage area is 0.3 ~ 1.2mg/ branch；The trade mark quantity is greater than 10；
Step (2), the 8-12 branch that the cigarette sample of each trade mark is chosen aspirate same board according to standard conditions on smoking machine
Number all cigarette samples, and collect with cambridge filter the granule phase substance of the trade mark cigarette, cambridge filter be then placed in 23-26mL
In extract liquor after oscillation extraction 29-31min, the pH value of extract liquor is measured to get granule phase substance pH value is arrived；Then with equipped with 23-
The absorption bottle of 26mL absorbing liquid absorbs flue gas, after the completion of suction, measures the pH value of absorbing liquid in absorption bottle to get gas gas-phase objects pH is arrived
Value；
It according to volume ratio is that 1:1 is mixed that the extract liquor, which is distilled water and isopropanol,；
It according to volume ratio is that 1:1 is mixed that the absorbing liquid, which is also distilled water and isopropanol,；
Step (3) takes isometric step (2) to extract the extract liquor of cambridge filter and absorbed the absorbing liquid of flue gas, mixes
PH value is surveyed after uniformly to get full smoke pH is arrived；
Step (4), using granule phase substance pH as independent variable X, full smoke pH carries out regression analysis as response variable Y, is returned
Return equation: Y=0.1603+0.9685X, the regression equation are the full smoke pH prediction model of cigarette.
2. the construction method of the full smoke pH prediction model of cigarette according to claim 1, which is characterized in that the volume
Cigarette sample includes blended type cigarette sample and Virginian-type cigarette sample.
3. the construction method of the full smoke pH prediction model of cigarette according to claim 1, which is characterized in that including as follows
Step:
Step (1), chooses the cigarette sample of multiple trades mark；The tar content coverage area of the cigarette sample is 3 ~ 13mg/ branch,
Nicotine content in smoke coverage area is 0.3 ~ 1.2mg/ branch；The trade mark quantity is greater than 10；
Step (2), according to standard conditions, aspirates the same trade mark on smoking machine by 10 of the cigarette sample selection of each trade mark
All cigarette samples, and collect with cambridge filter the granule phase substance of the trade mark cigarette, cambridge filter be then placed in 25mL extraction
In liquid after oscillation extraction 30min, the pH value of extract liquor is measured to get granule phase substance pH value is arrived；Then it uses equipped with 25mL absorbing liquid
Absorption bottle absorbs flue gas, after the completion of suction, measures the pH value of absorbing liquid in absorption bottle to get gas gas-phase objects pH value is arrived；
It according to volume ratio is that 1:1 is mixed that the extract liquor, which is distilled water and isopropanol,；
It according to volume ratio is that 1:1 is mixed that the absorbing liquid, which is also distilled water and isopropanol,；
Step (3) takes isometric step (2) to extract the extract liquor of cambridge filter and absorbed the absorbing liquid of flue gas, mixes
PH value is surveyed after uniformly to get full smoke pH is arrived；
Step (4), using granule phase substance pH as independent variable X, full smoke pH carries out regression analysis as response variable Y, is returned
Return equation: Y=0.1603+0.9685X, the regression equation are the full smoke pH prediction model of cigarette.
4. a kind of prediction technique of the full smoke pH of cigarette is predicted using the full smoke pH of claim 1-3 any one cigarette
The full smoke pH prediction model of cigarette of the construction method building of model, which comprises the steps of:
Step (1) detects the granule phase substance pH value of cigarette sample to be measured；
Step (1), using the granule phase substance pH value measured as the full smoke pH prediction model of cigarette of independent variable X substitution building: Y=
The value of 0.1603+0.9685X, you can get it response variable Y, which is the full smoke pH of cigarette sample to be measured.
5. the prediction technique of the full smoke pH of cigarette according to claim 4, which is characterized in that the specific side of step (1)
Method is: the 8-12 of selection props up cigarette sample to be measured and aspirates all cigarette samples to be measured on smoking machine according to standard conditions, and
The granule phase substance of the cigarette sample to be measured is collected with cambridge filter, and then cambridge filter is placed in 23-26mL extract liquor and vibrates extraction
After taking 29-31min, the pH value of extract liquor is measured to get granule phase substance pH value is arrived；
It according to volume ratio is that 1:1 is mixed that the extract liquor, which is distilled water and isopropanol,.
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| CN108398520B (en) * | 2018-03-06 | 2020-03-31 | 江苏中烟工业有限责任公司 | Method for predicting cigarette combustion intensity based on detection of flow field distribution |
| CN109820241B (en) * | 2019-01-04 | 2022-01-28 | 广西中烟工业有限责任公司 | Method for regulating and controlling cigarette smoke pH based on ratio of nicotine to non-volatile acid in leaf group formula |
| CN109799297A (en) * | 2019-02-01 | 2019-05-24 | 广西中烟工业有限责任公司 | A kind of construction method and its regulation method of cigarette smoke pH regulation-control model |
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| US4183362A (en) * | 1974-08-29 | 1980-01-15 | Liggett Group Inc. | Decreasing the burn rate of smoking tobaccos |
| KR100682888B1 (en) * | 2004-02-11 | 2007-02-15 | 삼성전자주식회사 | Methods for deciding weighted regression model and predicting concentration of component of mixture using the same |
| KR100817092B1 (en) * | 2007-03-14 | 2008-03-26 | 삼성전자주식회사 | Measuring system for correcting overlay measurement error and method of measurement using the system |
| CN101551372A (en) * | 2009-05-22 | 2009-10-07 | 沈阳远大环境工程有限公司 | Apparatus for measuring density and pH value of serous fluid processed by wet flue gas desulfurization |
| CN103235017B (en) * | 2013-04-25 | 2015-04-22 | 中国烟草总公司郑州烟草研究院 | Method for online measurement of pH of cigarette main stream smoke in real time |
| CN103926279A (en) * | 2014-04-25 | 2014-07-16 | 四川大学 | Method for determining pH value of main stream smoke of cigarette by using pH electrode |
| CN104090082B (en) * | 2014-07-24 | 2015-10-28 | 云南中烟工业有限责任公司 | The Forecasting Methodology of the full smoke pH of a kind of cigarette |
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