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A method for capturing and measuring ammonia in mainstream cigarette smoke and a device for capturing ammonia in the gas phase

A technology for mainstream smoke and gas phase of cigarettes, applied in sampling devices and other directions, can solve the problems of cumbersome capture operation steps, ammonia cannot be completely absorbed, and ammonia capture efficiency is low, and achieves excellent capture effect, easy implementation, and capture. The effect of high collection efficiency

Active Publication Date: 2017-01-04
CHINA TOBACCO SHAANXI IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In actual operation, this method has deficiencies in the capture method of ammonia in the gas phase: (1) Low operating efficiency: the capture operation steps are cumbersome, with many procedures, and time-consuming; (2) Low ammonia capture efficiency: the pipeline is long and the connection There are many places, and it is easy to leak air, so that the ammonia in the gas phase cannot be completely absorbed; (3) Since the trapped hydrazine contains a solution, it is easy to cause the phenomenon of sucking back

Method used

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  • A method for capturing and measuring ammonia in mainstream cigarette smoke and a device for capturing ammonia in the gas phase
  • A method for capturing and measuring ammonia in mainstream cigarette smoke and a device for capturing ammonia in the gas phase
  • A method for capturing and measuring ammonia in mainstream cigarette smoke and a device for capturing ammonia in the gas phase

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Experimental program
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Effect test

Embodiment 1

[0044] Firstly, according to the volume ratio of 4:1:5, accurately pipette ethanol, glycerin and 0.01mol / L hydrochloric acid solution and mix them evenly to form the filter absorption solution; put a 44mm Cambridge filter into the filter with a diameter larger than that of the filter In a glass dish, pipette 2.0mL filter absorbing liquid and drop evenly on the filter, after the filter absorbing liquid is completely absorbed and the filter is completely infiltrated, place the filter in a constant temperature and constant temperature of 22°C and 60% humidity. Treat in a wet box for 2 hours, take out the filter after balancing, and put it into the cavity of the plug-in flue gas capture device for ammonia capture and measurement.

Embodiment 2

[0046] Firstly, according to the volume ratio of 3:1:6, accurately pipette ethanol, glycerin and 0.01mol / L hydrochloric acid solution and mix them evenly to form the filter absorption solution; put a 92mm Cambridge filter into the filter with a diameter larger than that of the filter In a glass dish, pipette 5.0mL filter absorbing liquid and drop evenly on the filter, after the filter absorbing liquid is completely absorbed and the filter is completely infiltrated, place the filter in a constant temperature and constant temperature of 21°C and 63% humidity. Treat in a wet box for 3 hours, take out the filter piece after balancing, and put it into the cavity of the flue gas capture device for ammonia capture and measurement.

Embodiment 3

[0048] Firstly, according to the volume ratio of 5:1:4, accurately pipette ethanol, glycerin and 0.01mol / L hydrochloric acid solution and mix them evenly to form the filter absorption solution; put a 44mm Cambridge filter into the filter with a diameter larger than that of the filter In a glass dish, pipette 4.0mL of the filter absorbing solution and drop it evenly on the filter. After the filter absorbing liquid is completely absorbed and the filter is completely soaked, place the filter in a constant temperature and constant temperature of 23°C and 57% humidity. Treat in a wet box for 3 hours, take out the filter piece after balancing, and put it into the cavity of the flue gas capture device for ammonia capture and measurement.

[0049] The comparative test of the capture efficiency of ammonia in the gas phase of a method for capturing ammonia in the gas phase of mainstream cigarette smoke of the present invention and the method of YC / T377-2010, the repeatability of the pres...

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Abstract

The present invention relates to a method for capturing and measuring ammonia in cigarette mainstream smoke and a device for capturing ammonia in gas phase. Treat for more than 2 hours under the conditions of 21-23°C and 57-63% humidity; then install the treated filter in the flue gas collection device, and collect the flue gas according to the standard suction conditions. After the end, take out the filter piece and use hydrochloric acid solution to extract to prepare the sample to be tested for determination. In the flue gas trapping device instrument used in the present invention, the filter that can absorb ammonia is used to infiltrate the filter, which is easy to implement; the cavity can be engaged, which is convenient for the installation of the filter and is conducive to the full absorption of ammonia; It can capture gaseous ammonia and granular ammonia at the same time, with short pipelines, few joints, good sealing, and high absorption rate of ammonia in flue gas, especially gaseous ammonia. The device of the invention is simple and has good operability.

Description

technical field [0001] The invention belongs to the technical field of tobacco detection, and in particular relates to a method for capturing and measuring ammonia in cigarette mainstream smoke and a device for capturing ammonia in gas phase. Background technique [0002] Ammonia is a naturally occurring component in tobacco, one of the main harmful components recognized in mainstream cigarette smoke, and an important indicator for evaluating the harmfulness of cigarettes in my country. Appropriate content of nitrogen-containing compounds can maintain the appropriate physiological strength and concentration of the smoke. If the ammonia content is too low, the smoke will be weak and full; but excessive ammonia will produce strong irritation, causing the smoker's throat The contraction makes people feel choking and coughing, and the nasal cavity and tongue have acrid and unbearable feeling. Therefore, the accurate determination of the ammonia content in cigarette smoke can no...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/22G01N1/24
Inventor 何育萍黄仲波彭军仓樊亚玲曹洁穹向红何媛王瑶徐磊
Owner CHINA TOBACCO SHAANXI IND
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