Method for measuring nitrogen oxide in cigarette side-stream smoke
A technology of nitrogen oxides and sidestream smoke, which is applied in the direction of chemiluminescence/bioluminescence, and analysis by making materials undergo chemical reactions, can solve the problem of inability to quickly and accurately measure nitrogen oxides in sidestream smoke and large errors , complex equipment and other issues, to achieve the effect of small error, simple measurement method and accurate measurement
Inactive Publication Date: 2011-05-11
CHINA TOBACCO CHUANYU IND
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Problems solved by technology
The equipment used in the prior art is complex and has large errors, and cannot quickly and accurately measure the nitrogen oxides in the sidestream flue gas
Method used
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[0025] The present invention will be further elaborated below in conjunction with the accompanying drawings.
[0026] Such as figure 1 The shown method for measuring nitrogen oxides in cigarette sidestream smoke is carried out according to the following steps:
[0027] (1) Establish calibration working curve equation
[0028] Step 8 prepares 5 standard gas samples of different ratios of nitrogen oxides, and the ratios of nitrogen oxides are shown in Table 1:
[0029]
[0030] Table 1 Standard gas sample nitrogen oxide ratio table
[0031] In step 9, the nitrogen oxide standard gas is measured online, and the signal diagrams of the standard gas with different amounts of nitrogen oxide are obtained.
[0032] Integrate the signal graph in step 10, and the integration results are shown in Table 2.
[0033]
[0034] Table 2 Standard gas sample nitrogen oxide product integration peak area table
[0035] Perform linear regression on the integral result of step 11 and the c...
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The invention discloses a method for measuring the content of nitrogen oxides in the side-stream smoke from a cigarette, which comprises the steps of measuring standard nitrogen oxide gases with different preparation proportions on line, integrating the signal charts of the standard nitrogen oxide gases and obtaining integral results, conducting linear egression to the integral results and the quantity of the standard nitrogen oxide gases, establishing a calibrating working curve equation, measuring a cigarette sample to be measured on line under the standard smoking condition in an environment with a temperature of 22 plus or minus 2 DEG C and a relative humidity of 60 plus or minus 5 percent and figuring out the signal charts of the nitrogen oxide gases in the side-stream smoke from thecigarette sample, and figuring out the signal charts with the calibrating working curve equation so as to obtain the content of the nitrogen oxides in the side-stream smoke from the cigarette sample.Overcoming the defects that the prior equipment has complex structure, big errors and can not rapidly and accurately measure the content of nitrogen oxides, the invention provides a simple method formeasuring the content of nitrogen oxides in side-stream smoke from a cigarette on line, which has small errors and accurate measurement and can be widely applied to the tobacco industry.
Description
technical field [0001] The invention relates to a method for measuring cigarette smoke, in particular to a method for measuring nitrogen oxides in cigarette sidestream smoke. Background technique [0002] Cigarette smoke contains a small amount of nitrogen oxides. In addition to being free radicals, nitrogen oxides can also react with organic molecules such as hydrocarbons or dienes in cigarette smoke to produce a chain reaction of peroxidation or alkane free radicals. It can aggravate the degree of oxidation and peroxidation damage in the human body, which is more harmful to the organs and tissues of the body, and is an important harmful component. In recent years, as people pay more and more attention to smoking and health issues, the level of nitrogen oxides in cigarette smoke has also attracted people's attention. Therefore, rapid and accurate measurement of nitrogen oxides in cigarette smoke is very necessary for exploring the reduction of nitrogen oxides in cigarette ...
Claims
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IPC IPC(8): G01N21/76
Inventor 朱立军施丰成戴亚薛芳
Owner CHINA TOBACCO CHUANYU IND