Method for measuring interception amount in filter tip to benzo(a)pyrene in main stream smoke of cigarette

A technology for mainstream smoke and interception of cigarettes, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problem of benzo[a]pyrene, and achieve the effect of less operation steps

Inactive Publication Date: 2012-07-25
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no standard method for benzo[a]pyrene trapped in filters

Method used

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  • Method for measuring interception amount in filter tip to benzo(a)pyrene in main stream smoke of cigarette
  • Method for measuring interception amount in filter tip to benzo(a)pyrene in main stream smoke of cigarette
  • Method for measuring interception amount in filter tip to benzo(a)pyrene in main stream smoke of cigarette

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Connect the experimental device according to the attached drawing, put in 5g of dried spherical silica gel with a particle size of about 50μm and 10 suctioned filter tips with a length of 28mm, use 50ml of n-hexane as the extractant, close the valve, and heat in a water bath at 85°C After the condensed extractant is immersed in the filter tip, adjust the valve so that the speed of condensed reflux is consistent with the speed of the extract outflow. After 2 hours of extraction, close the valve and continue heating in the water bath until the condensate level reaches the extraction and purification chamber. Locate the position of the reticle (in this experiment, the volume of the cavity from the reticle to the valve is 60ml), remove the collection bottle, and the volume of the extract in the collection bottle is about 1-2ml at this time, according to "GB / T 21130-2007 Cigarette Quantitative analysis of benzo[a]pyrene with the instruments and conditions described in "Determ...

Embodiment 2

[0035] Spike recovery experiment.

[0036] Connect the experimental device according to the accompanying drawings, put 7g of dried spherical silica gel with a particle size of about 50μm and ten 28mm long filter tips added with a known amount of benzo[a]pyrene, and use 50ml of cyclohexane as Extractant, close the valve, heat in a water bath at 95°C, after the condensed extractant is immersed in the filter, adjust the valve so that the speed of condensed reflux is consistent with the speed of the extract, after extraction for 2.5 hours, close the valve and continue heating in the water bath, When the condensate level reaches the positioning mark line of the extraction and purification chamber (in this experiment, the volume of the cavity from the mark line to the valve is 60ml), remove the collection bottle, and the volume of the extraction liquid in the collection bottle is about 1-2ml at this time According to "GB / T 21130-2007 Determination of Benzo[a]pyrene in Total Particul...

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Abstract

The invention provides a method for measuring the interception in a filter tip to benzo(a)pyrene in a main stream smoke of a cigarette, which is characterized by comprising the following steps of: 1) selecting an extracting agent; (2) heating and gasifying the extracting agent, so as to enable condensed liquid of the gasified extracting agent to flow through the filter tip to extract the benzo(a)pyrene in the filter tip; 3) purifying extracted liquid by using a purifying material, and then heating and gasifying again; (4) circularly heating, gasifying, extracting and purifying; and 5) carrying out GC-MS (Gas Chromatograph-Mass Spectrometer) quantitative analysis the final extracted liquid. According to the principles disclosed by the invention, a boiling point of the benzo(a)pyrene is higher than that of the extracting agent, and therefore, the extracting agent in the extracted liquid is heated and gasified again, and the benzo(a)pyrene is remained. After the operations are carried out in a circulating way for a while, the benzo(a)pyrene in the filter tip is entirely extracted and a residual extracting agent is finally gasified out. Finally, the GC-MS quantitative analysis is carried out on concentrated liquid. The method disclosed by the invention integrates extraction, purification and concentration, has few operation steps and is simple and liable to operate.

Description

[0001] technical field [0002] The present invention relates to a method for measuring benzo[a]pyrene, more specifically to a method for measuring the interception of benzo[a]pyrene in the mainstream smoke of cigarettes by filters. [0003] Background technique [0004] As a bridge between the smoker and the mainstream smoke, the filter can effectively filter out some harmful components in the smoke, so it has been widely valued and applied. Determination of the retention of harmful components in cigarette mainstream smoke by filters can provide technical support for scientific design of cigarette filters. [0005] At present, the method for measuring the release of benzo[a]pyrene in mainstream cigarette smoke is relatively mature, and my country already has a related standard method ("GB / T 21130-2007 Benzo[a]pyrene in total particulate matter in cigarette smoke ] Determination of pyrene"). However, there is no standard method for benzo[a]pyrene trapped in filters. Exist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/06G01N30/72
Inventor 彭斌刘克建郭吉兆颜权平秦亚琼李翔聂聪
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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