Method for measuring benzene volatile organic compounds in cigarette filters by using headspace gas chromatograph
A headspace gas chromatography and organic compound technology, which can be used in instruments, measuring devices, scientific instruments, etc., can solve problems such as harming consumers' health and affecting the taste of cigarettes, and achieves a simple and fast method, accurate quantification, and good repeatability. Effect
Inactive Publication Date: 2015-07-01
中国烟草总公司湖北省公司
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During the printing and manufacturing process of these packaging materials, a large amount of chemical substances are used, and these substances may remain in the packaging materials and finally be wrapped in cigarette packs, which may affect the taste of cigarettes in the slightest, and endanger the health of consumers in severe cases.
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[0022] 1) Pre-treatment of the samples to be tested: keep the cigarette samples to be tested in a package at 22°C for more than 48 hours, unpack each sample, take 4 cigarettes, and break the cigarettes from the joint between the filter tip and shredded tobacco Finally, put the filter tip into the headspace bottle, add 0.5mL saturated saline, seal it, and use it as the sample to be tested.
[0023] 2) Preparation of standard solution: Weigh about 20mg (accurate to 0.1mg) of benzene, toluene, ethylbenzene, o-xylene, m-xylene, and p-xylene into a 25mL volumetric flask, and dilute to volume with absolute ethanol as the second For grade 5 standard working solution, dilute the previous standard working solution by 5 times step by step to obtain the next grade of standard working solution until the first grade of standard working solution.
[0024] 3) Preparation of standard samples: Put the cigarette in an oven at 100°C for about 4 hours, take it out, break it off in the same way as...
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The invention discloses a method for measuring benzene volatile organic compounds in cigarette filters by using a headspace gas chromatograph. The method comprises the following steps: putting a filter tip of a cigarette sample into a headspace bottle, and adding 0.5mL of saturated saline solution for sealing to serve as a sample to be measured; putting the cigarette into a drying oven at the temperature of 100 DEG C for about 4 hours, taking the cigarette out, putting the filter tip of the cigarette into the headspace bottle, and adding a standard solution and the 0.5mL of saturated saline solution for sealing to serve as a standard sample; and respectively detecting the sample to be detected and the standard sample by adopting the headspace gas chromatograph, making a standard curve by using an external standard method, and fitting a detection result of the sample to be detected and the standard curve, thus obtaining the content of the benzene volatile organic compounds in the cigarette filters. The method is simple, rapid, high in repeatability and accurate in quantification and is suitable for detection of the content of the benzene volatile organic compounds (VOCs) in the cigarette filters in a large scale, and the VOCs conditions in a pack of cigarettes can be generally measured by measuring the content of the VOCs in the cigarette filters.
Description
technical field [0001] The invention relates to a method for detecting benzene volatile organic compounds in cigarette filters, in particular to a method for measuring benzene volatile organic compounds in cigarette filters by headspace gas chromatography. Background technique [0002] A variety of packaging materials are used in the manufacturing process of cigarettes, including cigarette paper, filter rods, tipping paper, box sheets, inner liners, etc. During the printing and manufacturing process of these packaging materials, a large number of chemical substances are used. These substances may remain in the packaging materials and finally be wrapped in cigarette packs, which may affect the taste of cigarettes in the slightest and endanger the health of consumers in severe cases. [0003] Therefore, many methods have been developed around the detection and control of the content of volatile organic compounds (VOCs) in these cigarette materials. my country has also release...
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IPC IPC(8): G01N30/02
Inventor 肖少红汪宏毅廖晓玲郑玉红李韵
Owner 中国烟草总公司湖北省公司