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Cigarette smoke aerosol real-time testing system

A real-time test, cigarette smoke technology, applied in the preparation of test samples, instruments, analysis materials, etc., can solve the problem of inability to correctly evaluate the real characteristics of fresh aerosol samples, sample concentration, particle size characteristics and other key indicators distortion, mutual Problems such as collision, condensation, side wall adsorption concentration, particle size distribution characteristics, etc., to achieve the effect of highlighting substantive features, compact structure, and small volume

Active Publication Date: 2011-04-06
ZHENGZHOU TOBACCO RES INST OF CNTC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because they all use smoking machines to collect smoke aerosol samples, and then transport them to the detector for detection. When smoking, the smoke aerosol is first collected in the air collection bag through the smoking machine. The aerosol concentration of the internal flue gas is extremely high, and it is very easy to cause changes in the concentration and particle size distribution of aerosol particles due to mutual collision, condensation, and side wall adsorption. After this sample is transported to the detector, it will inevitably Distortion of key indicators such as sample concentration and particle size characteristics, resulting in the inability to correctly evaluate the true characteristics of fresh aerosol samples

Method used

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  • Cigarette smoke aerosol real-time testing system
  • Cigarette smoke aerosol real-time testing system
  • Cigarette smoke aerosol real-time testing system

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[0029] (1) Put a certain brand of cigarettes in a constant temperature and humidity room to balance for 48 hours. Cigarettes of the same specification were selected as experimental cigarettes. Set the suction duration 2s and the suction interval 58s in the air circuit converter.

[0030] (2) Turn on the flue gas dilution system and aerosol particle detection system, then adjust the inlet pressure of the diluted gas to the set pressure, calibrate the suction capacity (35±0.5)ml with a soap film flowmeter, until the system pressure is stable. Then light the cigarette and turn on the gas circuit converter at the same time. When the suction is maintained for 2 seconds, the gas channel leads to the smoke gas circuit A1, and the pure gas gas circuit A2 is closed. At this time, the negative pressure generated by the suction source can make the cigarette be drawn. Suck. After one puff of suction, the gas circuit converter controls the gas circuit to switch instantly, the gas channel...

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Abstract

The invention provides a cigarette smoke aerosol real-time testing system, which is characterized in that the testing system comprises a sample smoke generation device, a smoke dilution device, an aerosol particulate detection device and connecting pipelines. Compared with the prior art, the system has outstanding substantial characteristics and remarkable progress mainly shown in: 1) the real-time measurement of the particles size, particle concentration and distribution states of cigarette smoke aerosol particles can be realized; 2) fresh smoke is produced and then is immediately diluted and detected so as to avoid test errors caused by the intensive interaction of long pipelines, long residence time and high particle concentration when a smoke-sucking machine samples; 3) the connectingpipelines among the sample smoke generation device, the smoke dilution device and an aerosol particulate detection system are short and can adopt pipe material of which lining is anti-adsorption material so as to reduce test errors caused by pipe-wall adsorption; 4) the system is compact in structure, small in volume and convenient to move; and 5) the system can regulate smoke-sampling time, flowand other parameters so as to satisfy the measurement under a standard suction mode and a non-standard suction mode.

Description

technical field [0001] The invention relates to smoke testing in the field of tobacco, in particular to a real-time testing system for cigarette smoke aerosol. Background technique [0002] According to reports, various health indicators of the human body are closely related to the size, concentration and exposure time of particulate matter in the environment. When the aerodynamic diameter of particulate matter is less than 10 μm, it can enter the human respiratory tract through the nose and mouth, causing respiratory diseases; when the aerodynamic diameter of particulate matter is less than 2.5 μm, it can enter the human alveoli and even the blood circulation system, causing cardiovascular and other diseases. [0003] Cigarette smoke is a complex multiphase aerosol in which gas, liquid and solid coexist. The aerosol is dispersed with extremely high concentration of fine particles, and the particle size is between 0.1 and 1.0 μm. The probability of particle capture in filt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/00G01N1/24G01N1/38
Inventor 鲁端峰刘朝贤王兵常纪恒贾伟萍堵劲松
Owner ZHENGZHOU TOBACCO RES INST OF CNTC
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