Concentration mode distribution mode measuring method of NNK (Nicotine-derived Nitrosamine Ketone) retained by filter tip

A concentration distribution and filter technology, applied in the field of cigarette technology research, can solve problems such as the distribution mode of filters that have not yet been established

Inactive Publication Date: 2013-09-11
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the above is to evaluate the filtering effect of various filters on smoke components through smoke analysis. At present, there is no research report on the distribution mode of NNK intercepted by filters in filters.

Method used

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  • Concentration mode distribution mode measuring method of NNK (Nicotine-derived Nitrosamine Ketone) retained by filter tip
  • Concentration mode distribution mode measuring method of NNK (Nicotine-derived Nitrosamine Ketone) retained by filter tip
  • Concentration mode distribution mode measuring method of NNK (Nicotine-derived Nitrosamine Ketone) retained by filter tip

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Longitudinal distribution pattern of six kinds of filters retaining NNK

[0031] Through multiple radial cuts at different positions of the six kinds of filters after suction, analyze the NNK content in each part of the filter, calculate the concentration of NNK intercepted in different parts of the filter, and analyze the NNK concentration distribution in the axial direction By polynomial fitting, the longitudinal distribution patterns of six unstructured filter interception NNK were obtained. figure 2 Longitudinal distribution patterns of NNK retained by six kinds of filters. The longitudinal distribution pattern of NNK concentration intercepted by ordinary filter and column cavity filter showed a decreasing trend from the tobacco end to the smoking end ( figure 2 , A, E); the concentration of NNK increased to a certain extent at the structural change position of the external groove filter and the internal groove filter ( figure 2 , B and C); the concentration of...

Embodiment 2

[0033] Cross-sectional radial distribution patterns of six kinds of filters intercepting NNK

[0034] In the research on the radial distribution of NNK intercepted by the filter, on the basis of the radial cutting of the filter, the filter is cut in concentric circles with different radii in the radial direction. Separately analyze the NNK amount in the inner and outer parts of the filter after cutting (the three-section filter is combined), and calculate and use the relationship model between the radial cutting NNK loss rate and the cutting area to correct, and then the equidistant distance of the filter can be obtained. NNK amount and NNK concentration trapped inside, middle and outside. The polynomial fitting was carried out on the NNK concentration change law in the radial direction of the cross-section of the filter, and the radial distribution pattern of NNK in the cross-section of different filters was obtained. image 3 A, B, C, D, E, and F are the cross-sectional rad...

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Abstract

The invention discloses a concentration distribution mode distribution measuring method of NNK (Nicotine-derived Nitrosamine Ketone) retained by a filter tip. The concentration distribution mode measuring method comprises the steps of: firstly, radially cutting a smoked filter tip by using a laser, then carrying out concentric circle cutting along the axial center, or firstly carrying concentric circle cutting on the smoked filter tip along the axial center, and then carrying out radial cutting; separating ring-shaped filter tip sections and cylindrical filter tip sections with the corresponding quantity after the cutting is completed, quantitatively analyzing the content of the NNK in all the filter tip sections after the cutting and the separating, figuring out the concentration of the NNK, and then carrying out polynomial fitting on concentration distribution data of the NNK retained by the filter tip to obtain a concentration distribution mode of the NNK retained by the filter tip. According to the concentration distribution measuring method, filtering retaining distribution characteristics of the NNK in filter tips with different structures can be held through testing the longitudinal direction of the concentrations of the NNK retained by different filter tips and the radial directions of the cross sections of the filter tips, and the efficiency and the contribution of retaining the NNK in smoke by all parts in the filter tips with different structures can be quantitatively analyzed; the concentration distribution mode measuring method can be applied to the evaluation of the filtering performance of the NNK in the smoke of a functional filter tip and the improvement of the design of the functional filter tip.

Description

technical field [0001] The invention relates to a method for measuring the concentration distribution pattern of NNK intercepted by a filter tip, and belongs to the field of cigarette technology research. Background technique [0002] Cigarette filters can effectively intercept tar and other harmful components in mainstream smoke. When developing low-tar cigarette products, improving the smoke retention efficiency of filters is often the first choice of researchers. With the continuous expansion of the market for low-tar and ultra-low-tar cigarette products, more and more researches have been conducted on the interception efficiency, interception law and interception mechanism of various components in mainstream smoke by filters of various materials and specifications. Pay attention to. Keith first studied the mechanism of smoke filtering by filters, and the research results showed that there are three main ways of filtering smoke particles in filters: inertial collision, ...

Claims

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Application Information

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IPC IPC(8): G01N33/00
Inventor 文建辉杜文钟科军彭斌张晓兵刘惠民
Owner CHINA TOBACCO HUNAN INDAL CORP
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