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Method for Simultaneous Determination of Vinyl Acetate and Six Benzene Series in Water-based Adhesives

A technology for measuring vinyl acetate and water, which is applied in the detection field of water-based glue for cigarettes, and achieves the effects of simplified pretreatment steps, good reproducibility and simple operation.

Active Publication Date: 2020-05-05
CHINA TOBACCO JIANGSU INDAL
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Among the existing research results, there is currently a lack of related technical research and technical reports that can simultaneously detect the content of vinyl acetate and various benzene series in water-based adhesives in one injection

Method used

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  • Method for Simultaneous Determination of Vinyl Acetate and Six Benzene Series in Water-based Adhesives
  • Method for Simultaneous Determination of Vinyl Acetate and Six Benzene Series in Water-based Adhesives
  • Method for Simultaneous Determination of Vinyl Acetate and Six Benzene Series in Water-based Adhesives

Examples

Experimental program
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Embodiment

[0028] Embodiment: the mensuration of vinyl acetate and benzene series content in 10 water-based glue samples

[0029] (1) Preparation of working extract: Accurately weigh 10mg (accurate to 0.1mg) of 2-hexanone and 1g (accurate to 0.1mg) of isobutanol in a 100mL volumetric flask, and use N,N-dimethylformaldehyde Dilute the amide to the mark, and prepare a stock double internal standard extract with a concentration of 2-hexanone of 0.1 mg / ml and a concentration of isobutanol of 10 mg / ml; accurately pipette 0.5 ml of the prepared stock double internal standard extract into 1000 ml In a volumetric flask, dilute to the mark with N,N-dimethylformamide, mix well as the working extract;

[0030] (2) Preparation of standard working solution: Accurately weigh 0.250 g of vinyl acetate standard substance and 0.1 g of benzene series mixed standard solution with each concentration of 50 μg / g of benzene series in a 25 ml volumetric flask, and use N, N-di Dilute methylformamide to the scale...

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Abstract

The present invention discloses a method for simultaneously measuring acetic acid vinyl ester and 6 benzene series substances in water-based adhesive. The method comprises: dispersing samples by using N-N dimethylformamide, quantifying by using double internal standard methods and simultaneously measuring 7 compounds in cigarette water-based adhesive by using a headspace-gas chromatography-mass spectrometer during one sample injection; under adopted chromatographic conditions, chromatographic peaks of benzene, toluene, ethylbenzene, orthoxylen, m-xylene / p-xylene (m-xylene and p-xylene are not separated due to problems of a chromatographic column, but the calculation results are not influenced), and acetic acid vinyl ester target substance as well as two internal standard substances, namely isobutanol and 2-hexanone, are separated well. Results show that the regression equation correlation coefficient of each component reaches 0.999 or more, the quantitative determination limit of the benzene series substances is 0.01-0.02mg / kg, the quantitative determination limit of acetic acid vinyl ester is 0.10mg / kg, the mean relative standard deviation is 1.15%-3.75%, the adding standard recovery is 88.09%-95.44%; the method is fast, accurate, good in repeatability, high in recovery rate, good in practicability, and the like.

Description

technical field [0001] The invention relates to the technical field of detection of tobacco water-based glue, and more particularly relates to a method for simultaneously measuring the contents of vinyl acetate and six kinds of benzene series in the water-based glue. Background technique [0002] Water-based adhesive is a necessary auxiliary material in the cigarette production process. It is a water-soluble or emulsion-type adhesive with water as the dispersion medium. Cigarette packaging, etc. In the process of producing water-based glue, some vinyl acetate, benzene series and other substances may be introduced due to raw material or operating process problems. Vinyl acetate is a 2B carcinogen, which not only causes harm to the human body and the environment, but also seriously affects the sensory quality of cigarette products. Benzene series are highly toxic and can cause human skin, lung, nervous system and other diseases, endangering the health of consumers. The nati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
CPCG01N30/02
Inventor 徐光忠李青于小红
Owner CHINA TOBACCO JIANGSU INDAL
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