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Method for detecting cigarette filter tip entrapping ammine with ion chromatograph conductance

A conductivity detection, cigarette filter technology, applied in the direction of measuring devices, material separation, instruments, etc., to achieve the effect of filling the technical gap, improving the recovery rate, and improving the purification effect

Inactive Publication Date: 2008-01-30
CHINA TOBACCO HUNAN INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to establish a fast, reliable, simple and easy new method for detecting ammonia retained by cigarette filters, so as to solve the rapid detection of the ammonia content retained by cigarette filters and fill up the current technology for measuring the ammonia retained by cigarette filters blank

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] According to the regulations of GB / T16447-1996, suck 20 Furong (red soft) cigarettes (1puff / min, 2s / puff, 35mL / puff). After smoking, remove the filter tip, remove the tipping paper, and cut the filter tip with scissors. Cut it longitudinally into 4 equal pieces, place it in a collection bottle, and randomly collect 10 cigarette filter tips from each bottle (filter tips that have been sucked need to be cut into 4 equal pieces longitudinally with scissors, the purpose of which is to extract Sufficient and complete, reduce loss); pipette 25mL of 30mmol / L sulfuric acid solution into the collection bottle, and plug the stopper. After oscillating with a HY-2 oscillator at a speed of 160-180r / min for 40 minutes, pass through a 0.45μm water system to filter the micro-membrane. The filtrate was analyzed by IC chromatography. Chromatographic conditions: chromatographic analysis column is IonPac  CS12A (2mm i.d.×250mm) cation exchange column; guard column is IonPac  CG12A (2m...

Embodiment 2

[0020] With 30mmol / L sulfuric acid solution as solvent, prepare a series of mixed standard sample solutions according to the concentration range of 0, 0.2, 0.4, 0.8, 1.2, 1.6, 5.0μg / mL. Carry out ion chromatographic conductometric analysis detection under above-mentioned experimental condition, take the peak area of ​​component peak on the chromatogram as response signal, according to 3 parallel measurement results of ammonia standard solution, establish the standard curve of ammonia with external standard method, the standard curve of standard curve The linear correlation coefficient is 0.9989, indicating that the response signal is significantly linearly correlated with the concentration; the detection limit of the method is determined by 3 times the standard deviation of the 8 parallel measurement results of the lowest concentration standard solution, and the detection limit is 0.009 μg / mL, indicating that the method detects The limit is low, and the method is sensitive; 8 g...

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Abstract

The invention relates to a method of detecting ammonia cigarette filters intercepted by using ion chromatography conductivity device. The steps of the method: taking down the filter after the cigarette is burned off, shearing the filter into shivers vertically by scissors, putting the shivers into a receiving flask; adding 25-35mmol / L sulphuric acid solution into the receiving flask, plugging the tampon, filtering after vibration; analysising the filtrate by IC chromatograph, adopting CS12A cation exchange column; adopting the flow rate of elutriant 0.20-0.28mL / min, making the elutriant up of deionzied water and 35-45 mmol / L sulphuric acid solution, eluting by the gradient elutriant ; applying the temperature of 28-32 DEG C for the column and the detection cell. Sample size: 10-25 MuL, current flow: 15-32mA. The determination is made by retention time of standard substance while quantitation by peak area. The invention has the advantages of accurately and effectively detecting ammonia cigarette filters intercepted rapidly and reliability, convenient and easy handling. By adopting the gradient elute, the interference of various ions can be eliminated especially sodium ion; the invention solves the problem of rapid detection of ammonia cigarette filters intercepted and fills in the technology blank of detecting ammonia cigarette filters intercepted.

Description

technical field [0001] The invention relates to a method for detecting ammonia retained by cigarette filters. Background technique [0002] Ammonia is a natural component of tobacco that exists in the tobacco plant in the form of protons. In cigarettes, an appropriate amount of ammonia is necessary for cigarettes with more carbohydrates and organic acids, but excessive ammonia will produce strong irritation, causing smokers to constrict their throats, feel coughing, and irritate the nose and tongue. It has an unbearable spicy feeling, and at the same time, it participates in the formation of the taste of smoke with other nitrogen-containing compounds. Ammonia plays an important role in regulating the ratio of protonated / free nicotine in smoke. The higher the ammonia content, the stronger the irritation; if the ammonia content is too low, the strength of the smoke will decrease and the fullness will not be enough. Therefore, the determination of ammonia trapped in cigarett...

Claims

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Application Information

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IPC IPC(8): G01N30/02G01N30/06G01N30/34
Inventor 吴名剑庹苏行李辉韩星
Owner CHINA TOBACCO HUNAN INDAL CORP
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