Method for measuring ammonia content in cigarette smoke through ion chromatography

An ion chromatography and cigarette smoke technology, which is applied in the field of using ion chromatography to determine the ammonia content in cigarette smoke, can solve the problems of complicated operation, unstable liquid to be tested, failure to solve the stability of the liquid to be tested of ammonia, etc. Practicality, the effect of improving stability

Active Publication Date: 2013-12-25
CHINA TOBACCO JIANGSU INDAL
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, research work in this area has been carried out in the industry, and some studies mainly focus on the application of new chromatographic analysis columns to improve the separation of ammonia and methylamine to reduce the interference of ammonia detection, such as the application of CS16 chromatographic columns and ammonia and methylamine Methylamine can get a better resolution to meet the quantitative analysis, but the ammonia test solution is still unstable; some studies use flow analyzers to analyze ammonia in mainstream flue gas, but this method also fails to solve the ammonia test solution. Stability; in addition, some studies have also explored the method of stabilizing the ammonia liquid to be tested. For example, Shi Wenzhuang et al. can improve the stability of ammonia in the liquid to be tested by using graphitized carbon black to purify the liquid to be tested, but the operation of this method is relatively cumbersome.

Method used

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  • Method for measuring ammonia content in cigarette smoke through ion chromatography
  • Method for measuring ammonia content in cigarette smoke through ion chromatography

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Commercially available cigarette A was equilibrated at (22±1)°C and relative humidity (60±3)% for 48 hours, then the length of the butt of the smoked cigarette was determined and marked, and 4 cigarettes were smoked.

[0025] The Cambridge filter was used to trap the total particulate matter in the mainstream smoke, and the ammonia in the gas phase was collected in a trap bottle filled with 20 ml of deionized water trapping solution.

[0026] Put the filter piece that has captured the mainstream smoke of 4 cigarettes into a 100mL conical flask, add 20mL of the extract, the concentration of formaldehyde in the extract is 3mmol / L, and the concentration of hydrochloric acid is 100mmol / L, and then put the conical flask into Oscillate for 40 minutes on a speed-regulating oscillator, and the frequency of the oscillator is set at 160r / min. Accurately pipette 5mL of the above-mentioned particle phase extract and gas phase trap into a 25mL volumetric flask, use the extract to ma...

Embodiment 2

[0041] Two kinds of flue-cured cigarettes B and C and one mixed type cigarette D were equilibrated for 48 hours at (22±1)°C and relative humidity (60±3)%, and then the length of the butt of the smoked cigarette was determined and marked. Smoking 4 cigarettes.

[0042] The Cambridge filter was used to trap the total particulate matter in the mainstream smoke, and the ammonia in the gas phase was collected in a trap bottle filled with 20 ml of 5 mmol / L strong acid trapping solution.

[0043] Accurately pipette 20ml of sulfuric acid mixture containing formaldehyde and acetaldehyde (the molar concentrations of formaldehyde, acetaldehyde and sulfuric acid are 1mmol / L, 1mmol / L, and 50mmol / L respectively) to extract the Cambridge filter, ultrasonically extract for 40min, and combine 5ml The gas-phase absorption solution and 5ml particle-phase extraction solution are fixed to 25ml with a mixed solution of formaldehyde and acetaldehyde (the molar concentrations of formaldehyde and acet...

Embodiment 3

[0048] Repeat Example 1, the only difference is that the extract is changed to 20mL concentration of 10% formaldehyde solution.

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Abstract

The invention discloses a method for measuring ammonia content in cigarette smoke through ion chromatography. The method comprises the steps that an F319-04 filter leaf and an absorption bottle gather ammonia in main stream smoke, extract liquor is added to extract particulate matter in the F319-04 filter leaf, moderate extract liquor is mixed with absorption liquid in the absorption bottle, volume metering is conducted, an aqueous phase filter is used for filtering the mixed liquid, and an ion chromatograph is introduced to conduct measuring, wherein the extract liquor is aldehyde with strong acid. Filter leaf extraction is conducted by the aldehyde solvent with the strong acid, and therefore the stability of ammonia detection liquid can be effectively improved. The method for measuring the ammonia content in the cigarette smoke through the ion chromatography can measure the ammonia content in the sample solution accurately and fast through the ion chromatography, and is suitable for measurement of the ammonia content in large numbers of cigarette samples, good in practicability and beneficial to deep harm-reduction and tar-reduction research.

Description

technical field [0001] The invention relates to the technical field of tobacco, in particular to a method for measuring ammonia content in cigarette smoke by using ion chromatography. Background technique [0002] In recent years, with the continuous deepening of research on "Chinese-style cigarettes", the National Bureau has promptly adjusted "reducing tar and reducing harm" to "reducing harm and reducing tar", focusing on reducing harm and steadily reducing tar. At present, there are 5,000 compounds identified in tobacco and smoke, but harmful and carcinogenic components only account for a very small part. [0003] HOFFMANN and HECHT published a list of "43 ingredients" in 1991, and in 2001, HOFFMAN list announced 69 kinds of harmful ingredients. In 1998, the Canadian government published a list of 46 harmful components in mainstream cigarette smoke. On the basis of the "Cigarette Hazard Index System Research", China has determined for the first time 7 harmful component ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 沈晓晨张华庄亚东刘献军曹毅朱怀远朱莹王珂清
Owner CHINA TOBACCO JIANGSU INDAL
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