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Static Headspace-Gas Chromatography-Mass Spectrometry Selective Determination of Residual Vinyl Acetate in White Latex for Tobacco

A technology of gas chromatography mass spectrometry and vinyl acetate, which is applied in the field of physical and chemical inspection of cigarette materials, can solve problems such as unsatisfactory analysis needs, precision and accuracy limitations, and achieve avoidance of solvent extraction steps, high accuracy, and repeatability good sex effect

Active Publication Date: 2014-10-29
CHINA TOBACCO GUIZHOU IND
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Problems solved by technology

The traditional analysis methods for vinyl acetate residues in white latex for cigarettes mainly include near-infrared method, titration method, iodometric method, etc., but due to the limitation of precision and accuracy, these methods can no longer meet the needs of analysis

Method used

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  • Static Headspace-Gas Chromatography-Mass Spectrometry Selective Determination of Residual Vinyl Acetate in White Latex for Tobacco
  • Static Headspace-Gas Chromatography-Mass Spectrometry Selective Determination of Residual Vinyl Acetate in White Latex for Tobacco
  • Static Headspace-Gas Chromatography-Mass Spectrometry Selective Determination of Residual Vinyl Acetate in White Latex for Tobacco

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Embodiment 1

[0031] 1 Experimental part

[0032] 1.1 Materials, reagents and instruments

[0033] White latex samples for cigarettes (selected from cigarette companies); glyceryl triacetate (AR, Sinopharm Chemical Reagent Co., Ltd.); cyclohexane, n-hexane (chromatographically pure, Tianjin Damao Chemical Reagent Factory); N, N- Dimethylformamide [AR, Chongqing Chuandong Chemical (Group) Co., Ltd. Chemical Reagent Factory]; 2-hexanone (internal standard, IS; 99%), vinyl acetate (99%, U.S. Sigma Company); HP6890 / Model 5973 gas chromatography / mass spectrometer, 7694 automatic headspace instrument (Agilent, USA); AG104 electronic analytical balance (sensitivity: 0.1 mg, Mettler-Toledo, Switzerland).

[0034] 1.2 Sample processing and analysis

[0035] Accurately weigh 0.25g of vinyl acetate into a 25mL volumetric flask, and dilute to volume with N,N-dimethylformamide to obtain a 10mg / mL standard solution of vinyl acetate. Accurately weigh 0.3g of 2-hexanone (IS) in a 50mL volumetric flask,...

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Abstract

The invention relates to a method for selectively determining residual vinyl acetate in white latex for cigarette through static headspace and gas chromatography mass spectrometry, belonging to the technical field of physical and chemical inspection of materials for the cigarette, and provides a quantitative selected ion determining method through the static headspace and gas chromatography mass spectrometry, aiming at selectively determining the residual vinyl acetate in white latex for the cigarette. A sample of the white latex for the cigarette after static headspace at 80 DEG C for 15 minutes is detected by taking 2-hexanone as an internal standard through HP-INNOWAX column in a GC-MS / SIM (Gas Chromatography Mass Spectrometry / Selected Ion Monitoring) mode, and is quantified through an internal standard method. According to the method for selectively determining the residual vinyl acetate in the white latex for the cigarette through the static headspace gas chromatography mass spectrometry, disclosed by the invention, detection limit, labeling recovery ratio and RSD (Relative Standard Deviation) of the method are respectively 0.63mg / kg, 104-107% and 2.5-4.9%; in addition, the method disclosed by the invention has the characteristics of simpleness, fastness, accuracy, sensitiveness and the like, and is especially suitable for quantitative analysis on the residual vinyl acetate in the white latex for the cigarette.

Description

technical field [0001] The invention relates to a static headspace-gas chromatography mass spectrometry method for selectively measuring residual vinyl acetate in white latex for cigarettes, and belongs to the technical field of physical and chemical testing of cigarette materials. Background technique [0002] At present, most of the adhesives used in domestic cigarette production are a kind of thermoplastic white latex synthesized from vinyl acetate as the main raw material. The residual vinyl acetate monomer is not conducive to the stability of the emulsion, but also brings unpleasantness to the product. The irritating smell of cigarettes can seriously affect the sensory quality of cigarette products, and the International Association for Research on Cancer has listed it as a 2B carcinogen. Therefore, analyzing and monitoring the residual vinyl acetate in white latex for smoking is of great significance to the smoking safety of cigarettes. The traditional analysis method...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N30/02
Inventor 刘剑姬厚伟聂长春叶冲万强韩伟王芳
Owner CHINA TOBACCO GUIZHOU IND
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