Method for quantitatively detecting components in glycerol triacetate for tobacco

Abstract

The invention provides a method for quantitatively detecting glycerol triacetate for tobacco. One substance or two substances in trans-anethole and propylene carbonate is / are used as internal standard substances to prepare extraction, and quantitative analysis is carried out on the extraction by an internal standard method. In the preparation process, the detected components and the internal standard substances are mixed together to be injected into a chromatographic column, and the changes of injection volume can not influence quantitative results. The mass percentage content of the detected components in the samples of the glycerol triacetate for tobacco can be detected more accurately, and monoacetin and glycerol diacetate can be distinguished.

Description

technical field [0001] The invention relates to a method for testing components in tobacco, in particular to a method for quantitatively detecting components in triacetin for tobacco. Background technique [0002] Tobacco triacetin is the esterification product of glycerin and glacial acetic acid under catalytic conditions. It is used in tobacco, cosmetics, casting, medicine, dyes and other industries, and is non-toxic and non-irritating. In the tobacco industry, it is used as a plasticizer for forming cigarette filter rods. The main component, glycerol triacetate, can bond and solidify acetate tows, making cigarette filter rods have good elasticity, air permeability and appropriate hardness. , directly and indirectly affect the filter rod molding, cigarette rolling, and even the internal and external quality of finished cigarettes. The tobacco industry standard YC 144-2008 of the People's Republic of China stipulates that triacetin for tobacco with a triacetin content ≥ 99...

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Problems solved by technology

[0004] But there are some problems in this method: the chromatographic peaks of glyceryl monoacetate and glyceryl diacetate in the sample cannot be separated; due to the different response factors of various components in the sample on the hydrogen flame ionization detector, the peak The area percentage example is not the same as the actual content percentage example, and there is an error in estimating its actual content ratio from the peak area percentage example of triacetin by the peak area normalization method; and are equal, but the ratio is different, the actual content of other components is different, which will cause the actual content ratio of triacetin to be different; GC-FID has limited detection ability and cannot produce all components A strong response signal usually contains some substances with a relatively large proportion in the sample, which cannot be detected by GC-FID, and the peak cannot appear, making the total peak area small, and the peak area of ​​triacetin accounts for the total The peak area ratio is too large, resulting in the measured triacetin content being larger than the actual

Due to the above reasons, the existing detection methods have deviations in the detection of the content of triacetin in tobacco triacetin

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