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Method for measuring content of benzene and benzene series in hot melt glue

A technology of benzene series and hot melt adhesive, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems such as the lack of national standards or industry standards, the adverse effect of cigarette smell, the effect of cigarette smoking food quality, etc. Optimized, high recovery, effect of eliminating influences and disturbances

Inactive Publication Date: 2012-01-18
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Excessively high content of volatile harmful components such as benzene and benzene series in hot melt adhesives will not only adversely affect the smell of cigarettes, but also have a serious impact on the smoking quality of cigarettes. More importantly, these harmful components May be potentially harmful to the health of smokers
[0003] At present, there are no domestic reports on the method for the content of benzene and benzene series in hot melt adhesives, and there is no corresponding national standard or industry standard.

Method used

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  • Method for measuring content of benzene and benzene series in hot melt glue
  • Method for measuring content of benzene and benzene series in hot melt glue
  • Method for measuring content of benzene and benzene series in hot melt glue

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Experimental program
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Effect test

Embodiment 1

[0032] Determination of the content of benzene and benzene series in hot melt adhesives (the determination process is as follows figure 1 shown)

[0033] 1. Matrix correction agent: glycerol triacetate is used as the matrix correction agent.

[0034] 2. Preparation of standard working solution

[0035] (1) Preparation of mixed standard stock solution Ⅰ: Accurately weigh 125mg of benzene, toluene, ethylbenzene, o-xylene and p-xylene (or m-xylene) in a 25mL volumetric flask, and use glycerol triacetate (Chromatographically pure solvent, purity ≥99%) Dilute to the mark, mix well to obtain mixed standard stock solution I, in which the concentration of each component is 5mg / mL;

[0036] (2) Preparation of mixed standard stock solution II: gradually dilute the mixed standard stock solution I with triacetin solution to obtain mixed standard solution II with a concentration of 0.8-1.2 mg / L;

[0037] (3) Preparation of standard working solution: Accurately pipette 200 μL, 400 μL...

Embodiment 2

[0056] The present embodiment detects the repeatability and standard addition recovery of the inventive method:

[0057] Add 3 different concentrations of standard working solutions to the samples (the concentrations of the corresponding components in the standard solutions are (0.02mg / L, 0.04mg / L, 0.1mg / L), measure each sample 5 times, and the top The condition of empty chromatographic mass spectrometry analysis is the same as the headspace chromatographic mass spectrometry analysis condition of embodiment 1, calculates the relative standard deviation of the standard addition recovery of benzene and benzene series in the hot melt adhesive of this method and the measured value after the standard addition according to the analysis result, the result As shown in Table 4:

[0058] Table 4 The results of the recovery rate and standard deviation of the standard addition

[0059] Compound name Recovery rate(%) RSD (%) benzene 95.4 3.5 toluene 97.9...

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Abstract

The invention discloses a method for measuring the content of benzene and benzene series in hot melt glue. The method comprises the following steps of: selecting benzene, methylbenzene, ethylbenzene, o-xylene, p-xylene or m-xylene as standard substances of the benzene and the benzene series, and gradually diluting to form a standard working solution by taking glyceryl triacetate as a matrix correction fluid; taking a hot melt glue sample and adding the hot melt glue sample into the matrix correction fluid, and detecting and analyzing the standard working solution and the sample by using a headspace gas chromatography mass spectrometry; and finally, drawing a standard curve and calculating a result. In the invention, a complex pretreatment process of the sample, and influences and interference caused by volatile components in the sample are eliminated. According to the method, the recovery rate ranges from 95% to 101%, the average relative standard deviation ranges from 3.04% to 4.14%, and the repeatability is good.

Description

technical field [0001] The invention belongs to the technical field of physical and chemical inspection of cigarette materials, and in particular relates to a method for measuring the content of benzene and benzene series in hot melt adhesives. Background technique [0002] Hot melt adhesive is a kind of smoking material, mainly used for bonding filter rod forming paper. Hot melt adhesives are composed of basic resins, tackifiers, viscosity regulators and antioxidants. Different hot melt adhesive manufacturers have different raw materials and production processes, and there are certain benzene and benzene residues in their hot melt adhesives. Department of things. Excessively high content of volatile harmful components such as benzene and benzene series in hot melt adhesives will not only adversely affect the smell of cigarettes, but also have a serious impact on the smoking quality of cigarettes. More importantly, these harmful components There may be a potential hazard t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/72G01N30/06
Inventor 王庆华范多青者为李响丽高文军王坚邹楠潘家明
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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