WO2016019648A1 - 一种评价电子烟烟雾量的方法 - Google Patents

一种评价电子烟烟雾量的方法 Download PDF

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WO2016019648A1
WO2016019648A1 PCT/CN2014/090730 CN2014090730W WO2016019648A1 WO 2016019648 A1 WO2016019648 A1 WO 2016019648A1 CN 2014090730 W CN2014090730 W CN 2014090730W WO 2016019648 A1 WO2016019648 A1 WO 2016019648A1
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smoke
aerosol particles
aerosol
amount
diameter
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PCT/CN2014/090730
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English (en)
French (fr)
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张霞
韩熠
朱东来
李寿波
巩效伟
雷萍
尚善斋
陈永宽
杨柳
孙志勇
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云南中烟工业有限责任公司
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Priority to US14/784,552 priority Critical patent/US10222311B2/en
Publication of WO2016019648A1 publication Critical patent/WO2016019648A1/zh

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    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/80—Testing
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0266—Investigating particle size or size distribution with electrical classification
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/06—Investigating concentration of particle suspensions
    • G01N15/0656—Investigating concentration of particle suspensions using electric, e.g. electrostatic methods or magnetic methods
    • A—HUMAN NECESSITIES
    • A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
    • A24F—SMOKERS' REQUISITES; MATCH BOXES; SIMULATED SMOKING DEVICES
    • A24F40/00—Electrically operated smoking devices; Component parts thereof; Manufacture thereof; Maintenance or testing thereof; Charging means specially adapted therefor
    • A24F40/10—Devices using liquid inhalable precursors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N2015/0003—Determining electric mobility, velocity profile, average speed or velocity of a plurality of particles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N2015/0023—Investigating dispersion of liquids
    • G01N2015/0026—Investigating dispersion of liquids in gas, e.g. fog

Definitions

  • the invention relates to a method for evaluating the amount of electronic cigarette smoke.
  • Electronic cigarettes are electron transport devices that use electronic heating to deliver nicotine to the respiratory system by electrically heating a liquid medium containing nicotine to produce smoke.
  • electronic cigarettes have the following advantages: First, the electronic cigarette aerosol does not contain tar, CO, HCN and other harmful components; Second, the nicotine solution of the electronic cigarette is aerosolized to form an aerosol, and the aerosol is in the air. It is quickly diluted and will not form second-hand smoke. Third, the electronic cigarette has no burning process, and will not produce soot and cigarette butts, and there is no fire hazard. This kind of electronic cigarette integrating modern microelectronic technology, biotechnology and healthy living concept firmly grasps the psychological characteristics of consumers and attracts many consumers' eyes in a short time. At present, the research on electronic cigarettes mainly focuses on the design of electronic cigarette smoking, tobacco liquid and accessories.
  • the amount of smoke is an important quality indicator for evaluating the performance of electronic cigarettes.
  • the cigarette smoke of traditional cigarettes is mainly composed of solid particles and a small amount of liquid particles.
  • the volume of particles in the smoke is large.
  • Light scattering is usually used to determine the amount of smoke of traditional cigarettes.
  • Chinese patent CN1113620C the light scattering method.
  • the main principle is to make a certain wavelength of light pass through the aerosol. The more solid particles in the smoke, the stronger the scattering effect on the light, the smaller the transmission intensity of the light. Therefore, by detecting the transmission intensity of light, Quantitatively measure the amount of solid particles in the smoke.
  • the main components of e-cigarette smoke are liquids, such as propylene glycol, glycerin, nicotine and aroma substances, which are volatilized by heat to form small droplets dispersed in the air to form an aerosol.
  • the droplet particles are not only smaller in volume than solid particles, but also What is important is that the droplet itself is transparent and does not have a significant scattering effect on light like solid particles. Therefore, the electronic cigarette is determined by light scattering method. When the amount of smoke is small, the scattering intensity and the test accuracy are low and the reproducibility is poor. Therefore, the amount of smoke of the electronic cigarette is not suitable for the measurement apparatus and method using the traditional cigarette smoke amount.
  • the evaluation of the amount of e-cigarette smoke is mainly based on the human visual perception, which brings a lot of subjective uncertainty. At present, the method for objective evaluation of the amount of electronic cigarette smoke has not been reported.
  • the object of the present invention is to propose a new electronic cigarette smoke quantity evaluation method for the deficiency of the existing evaluation method, and to fill the technical blank in the objective evaluation of the electronic cigarette smoke quantity.
  • the method can accurately and objectively evaluate the amount of electronic cigarette smoke, and avoid the error caused by the individual visual difference of the current sensory evaluation method.
  • the invention relates to a method for evaluating the amount of electronic cigarette smoke, the method comprising the steps of:
  • measuring step aspirating the electronic cigarette, measuring the particle size distribution and number of aerosol particles in the generated smoke; and measuring the aerosol volume flow C and the detection time t;
  • the unit is nm, and calculate the average concentration n of the particles corresponding to each of the classification diameters d i ; the so-called classification diameter d i is Refers to the average value of the air-soluble particle diameter of each stage when the diameter of the aerosol particles is classified according to the size;
  • the average concentration of the aerosol particles corresponding to d i is in units/cm 3 , and the value of n can be calculated from the particle size distribution of the aerosol particles and the number of particles and the number of divisions determined in the measuring step, for example, using the following
  • the assay step and data processing can be accomplished using a combination of a smoking cycle simulator (SCS)-DMS500 fast particle size spectrometer.
  • SCS smoking cycle simulator
  • the whole set of equipment is purchased from the British company CAMBUSTION company, by setting appropriate instrument parameters, including suction capacity, suction curve, suction interval time, sampling head temperature, data acquisition speed, dilution ratio, etc., so that the smoking cycle simulator ( SCS) simulates the smoking of electronic cigarettes.
  • SCS smoking cycle simulator
  • the aerosol smoke generated by suction enters the DMS500 fast particle size spectrometer.
  • the DMS500 fast particle size spectrometer charges the aerosol particles by discharge and separates the aerosol particles of different particle sizes based on the difference of electromigration of different charged aerosol particles.
  • the particle size distribution and number of aerosol particles were measured in real time online. After the measurement is completed, the raw data of the measurement outputted by the DMS 500 is processed to obtain indexes such as the average number n of aerosol particles, the aerosol flow rate C, and the detection time t of each of the fractional diameters d i . The amount of smoke is then evaluated, combined with the relevant literature and aerosol theory, assuming that the aerosol particles in the e-cigarette smoke are spherical and the particle density is the standard density ⁇ 0 , ie the density of water: 1.0 g/cm 3 .
  • the selection of the particle density is fixed and does not affect the relative value. Therefore, the amount of smoke is compared.
  • the density is actually arbitrarily selected, the total mass of the aerosol particles corresponding to each of the grading diameters is the amount of smoke.
  • the electronic cigarette heats a liquid medium containing nicotine to generate smoke by electrical heating.
  • the diameter of aerosol particulates having a diameter ranging from 4 to 1000 nm is graded using a classifier of the DMS500 Rapid Particle Size Analyzer. This range was chosen because almost all of the aerosol particles were experimentally determined to have a diameter within this range, so that the range selected would cover almost all aerosol particles when determining the total weight of the aerosol particles.
  • W is the amount of smoke
  • the unit is g
  • d i is the fractional diameter corresponding to the aerosol particles, which is divided into 38 grades, the corresponding values are described above, the unit is nm
  • ⁇ 0 is assumed Standard density of particles: 1.0 g/cm 3
  • n is the average concentration of aerosol particles corresponding to each fractional diameter d i in units of cm/cm 3
  • C is the aerosol flow rate in cm 3 /s
  • t 0 is the detection The starting time, t 1 is the detection end time, and the unit is s.
  • v i is the volume of the particles corresponding to each of the classification diameters, and the unit is nm 3 ; in the formula (2), m i is the mass of the particles corresponding to each of the classification diameters, and the unit is g; in the formula (3), C 1 is one.
  • the stage dilution flow rate means the volume of gas mixed into the flue gas per unit time; C 2 is the flue gas flow rate, the unit is cm 3 /s, and the two are mixed to obtain the total aerosol flow rate; in formula (4), V is the determination The actual aerosol volume, in units of cm 3 ; N in equation (5) is the number of particles of each graded particle size measured by the instrument, in units.
  • the actual aerosol volume V in the formula (4) is the integral of the aerosol flow rate C to the detection time t, t 0 is the detection start time, and t 1 is the detection termination time. And due to the instantaneous broadening of the aerosol detection signal, the instrument is automatically averaged so that the actual detection time t is slightly longer than the set suction duration.
  • the detection time is the single-port pumping time
  • the calculated amount of smoke is the amount of single-smoke of the electronic cigarette.
  • the present invention has the following advantages:
  • the objective evaluation method for the amount of electronic cigarette smoke has not been reported yet, and the invention fills a gap in the evaluation of the amount of electronic cigarette smoke.
  • the present invention provides an objective quantitative evaluation method for the amount of electronic cigarette smoke, which is beneficial to Standardize the quality monitoring of electronic cigarettes.
  • the traditional light scattering method is inferior in accuracy and reproducibility when applied to the measurement of electronic cigarette smoke.
  • the method of the present invention can be applied to electronic cigarettes with high sensitivity, precision and reproducibility. Determination of the amount of smoke.
  • the smoking e-cigarette 1 and the electronic cigarette 2 were simulated using a smoking cycle simulator (SCS), respectively, and the generated aerosol smoke was analyzed by a DMS500 fast particle size spectrometer.
  • SCS smoking cycle simulator
  • DMS500 fast particle size spectrometer.
  • the suction capacity set by SCS is 55mL
  • the suction interval is 30s
  • the sampling head temperature is 320K
  • the data acquisition frequency set by DMS is 10Hz
  • the secondary dilution factor is 300.
  • other instrument parameters suitable for operation can also be used.
  • the electronic cigarette is sucked, and each electronic cigarette is sucked by 10 ports.
  • the particle size distribution and number of aerosol particles in the smoke generated by the two electronic cigarettes were measured in real time, and the aerosol flow rate C and the detection time t were measured.
  • the difference in the amount of smoke per mouth of the same electronic cigarette can be compared, and the amount of smoke of different electronic cigarettes can also be compared.
  • the amount of smoke of No. 1 e-cigarette is slightly larger than that of No. 2 e-cigarette.

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)

Abstract

一种评价电子烟烟雾量的方法，包括以下步骤：（1）测定步骤：抽吸电子烟，测定产生的烟雾中的气溶胶颗粒粒径分布和数目，并测定气溶胶体积流量C和检测时间t；（2）数据处理：由气溶胶颗粒粒径分布和数目划分出气溶胶颗粒物各分级直径di并计算出各di对应的气溶胶颗粒物的平均数浓度n；（3）按照烟雾量计算公式对产生的烟雾量进行计算：其中，W为烟雾量，ρ 0为假定的颗粒标准密度：1.0g/cm3； t0为检测起始时间，t1为检测终止时间。

Description

一种评价电子烟烟雾量的方法 技术领域
本发明涉及电子烟烟雾量的评价方法。
背景技术
电子烟是利用电子加热手段向呼吸系统传送烟碱的电子传送装置，其采用电加热方式加热含有烟碱的液体介质来产生烟雾。与传统卷烟相比，电子烟具有以下优势：一、电子烟气溶胶中不含焦油、CO、HCN等有害成分；二、电子烟的烟碱溶液经雾化后形成气溶胶，气溶胶在空气中迅速被稀释，不会形成二手烟；三、电子烟无燃烧过程，不会产生烟灰和烟蒂，无火灾隐患。这种集现代微电子技术、生物技术、健康生活理念为一体的电子烟，牢牢把握了消费者的心理特点，在短时间内吸引了众多消费者眼球。目前针对电子烟的研究，主要集中在电子烟烟具、烟液及配件的设计上。
烟雾量是评价电子烟性能的一个重要质量指标。传统卷烟的香烟烟雾的成分主要为固体颗粒，亦有少量液体颗粒，烟雾中的颗粒体积较大，通常采用光散射法来测定传统卷烟的烟雾量，例如参见中国专利CN1113620C，该光散射法的主要原理是使一束特定波长的光穿过烟雾气溶胶，烟雾中的固体颗粒越多，则对光的散射作用越强，则光的透射强度越小，因此通过检测光的透射强度，可以定量检测烟雾中固体颗粒的含量。但是电子烟烟雾的主要成分是液体，例如丙二醇、甘油、烟碱和香味物质等，其受热挥发，形成小液滴分散在空气中形成气溶胶，液滴颗粒不仅体积比固体颗粒更小，更重要的是，液滴本身是透明的，不像固体颗粒那样对光有明显的散射作用，因此，以光散射法测定电子烟 烟雾量时，其散射强度和测试精度很低、重现性差，因此电子烟的烟雾量不适合采用传统卷烟烟雾量的评价设备和方法进行测定。目前，电子烟烟雾量大小的评价主要是以人体视觉感受为判断依据，这带来了很多主观不确定性。目前，针对电子烟烟雾量进行客观评价的方法还未见报道。
发明内容
本发明的目的在于针对现有评价方法的不足，提出一种新的电子烟烟雾量评价方法，填补电子烟烟雾量客观评价方面的技术空白。该方法可对电子烟烟雾量进行精确的客观评价，避免目前感官评价方法因个体视觉差异引起的误差。
本发明涉及一种评价电子烟烟雾量的方法，该方法包括以下步骤：
(1)测定步骤：抽吸电子烟，测定产生的烟雾中的气溶胶颗粒粒径分布和数目；并测定气溶胶体积流量C和检测时间t；
(2)数据处理：对直径范围为4～1000nm的气溶胶颗粒进行分级，划分出气溶胶颗粒各分级直径di，共分为38级，依次定义为d1～d38，数值分别为4.87、5.62、6.49、7.5、8.66、10、11.55、13.34、15.4、17.78、20.54、23.71、27.38、31.62、36.52、42.17、48.7、56.23、64.94、74.99、86.6、100、115.48、133.35、153.99、177.83、205.35、237.14、273.84、316.23、365.17、421.7、486.97、562.34、649.38、749.89、865.96、1000，单位为nm，并计算出各分级直径di对应的颗粒物平均数浓度n；所谓分级直径di是指按照大小对气溶胶颗粒物的直径进行分级时每一级气溶颗粒直径的平均值；
(3)评价方法：假定电子烟烟雾中的气溶胶颗粒为球形且颗粒密度为标准密度ρ0，即水的密度：1.0g/cm3；
按照如下公式计算烟雾量：
烟雾量
Figure PCTCN2014090730-appb-000001
注：上式中W为烟雾量，单位为g；di为气溶胶颗粒物对应的各分级直径，单位为nm；ρ0为假定的颗粒标准密度：1.0g/cm3；n为各分级直径di对应的气溶胶颗粒物的平均数浓度，单位为个/cm3，n值可以由测定步骤中所测定的气溶胶颗粒粒径分布和颗粒数目以及所划分的分级数计算得到，例如利用下文所述的快速粒径谱仪自带的工作软件计算得到；C为气溶胶体积流量，单位为cm3/s；t0为检测起始时间，t1为检测终止时间，单位均为s。在本发明的优选实施方案中，可以采用吸烟循环模拟机(SCS)-DMS500快速粒径谱仪结合来完成测定步骤和数据处理。整套装置是采购自英国CAMBUSTION公司的机器，通过设置合适的仪器参数，包括抽吸容量、抽吸曲线、抽吸间隔时间、采样头温度、数据采集速度、稀释比等，使吸烟循环模拟机(SCS)模拟抽吸电子烟。抽吸产生的气溶胶烟雾进入DMS500快速粒径谱仪，DMS500快速粒径谱仪通过放电使气溶胶颗粒带电并基于不同带电气溶胶颗粒电迁移率的区别，分离不同粒径的气溶胶颗粒并在线实时测定气溶胶颗粒粒径分布和数目。测定完成后，通过对DMS500输出的测定原始数据进行处理，获取各分级直径di对应气溶胶颗粒物的单口平均数浓度n、气溶胶流量C和检测时间t等指标。然后对烟雾量进行评价，结合相关文献及气溶胶理论，假定电子烟烟雾中的气溶胶颗粒为球形且颗粒密度为标准密度ρ0，即水的密度：1.0g/cm3。实质上，在对比同一支电子烟每口烟雾量的差别或者对比不同支电子烟的烟雾量的差别时，颗粒密度的选取只要固定，并不会影响相对值的大小，因此，在对比烟 雾量时，密度的大小实际上可以任意选取，各分级直径对应的气溶胶颗粒物的总质量即为烟雾量。
在本发明的优选实施方案中，所述电子烟采用电加热方式加热含有烟碱的液体介质来产生烟雾。
在本发明的优选实施方案中，用DMS500快速粒径谱仪的分级器对直径范围为4～1000nm的气溶胶颗粒物的直径进行分级。选取该范围是因为经过实验测定几乎所有气溶胶颗粒的直径均处于该范围内，故在测定气溶胶颗粒的总重量时，所选取的该范围能够将几乎所有气溶胶颗粒涵盖在内。
具体计算公式如下：
(1)各分级直径对应的颗粒物体积
Figure PCTCN2014090730-appb-000002
(2)各分级直径对应的颗粒物质量mi＝vi×ρ0×10-21
(3)气溶胶流量C＝C1+C2
(4)气溶胶实际体积
Figure PCTCN2014090730-appb-000003
(5)各分级粒径对应的颗粒数目N＝n×V
(6)烟雾量
Figure PCTCN2014090730-appb-000004
以一定体积的气溶胶质量作为烟雾量W的表征，经计算转换得：
烟雾量
Figure PCTCN2014090730-appb-000005
注：上式中W为烟雾量，单位为g；di为气溶胶颗粒物对应的各分级直径，一共分为38级，对应的值在上文中已有说明，单位为nm；ρ0为假定颗粒标准密度：1.0g/cm3；n为各分级直径di对应气溶胶颗粒物的平均数浓度，单位为个/cm3；C为气溶胶流量，单位为cm3/s；t0为检测起始时间，t1为检测终止时间，单位均为s。式(1)中vi为各分级直径对应的颗粒物体积，单位为 nm3；式(2)中mi为各分级直径对应的颗粒物质量，单位为g；式(3)中C1为一级稀释流量，含义为单位时间内向烟气中混入的气体体积；C2为烟气流量，单位均为cm3/s，二者混合后得到总气溶胶流量；式(4)中V为测定的气溶胶实际体积，单位为cm3；式(5)中N为仪器测得各分级粒径颗粒的数目，单位为个。
由于电子烟抽吸是一个持续的过程，因此式(4)中的气溶胶实际体积V是气溶胶流量C对检测时间t的积分，t0为检测起始时间，t1为检测终止时间，且因气溶胶检测信号的瞬时展宽，仪器经自动平均，使实际检测时间t比设定的抽吸持续时间稍长。当检测时间为单口抽吸时间时，计算得到的烟雾量为电子烟的单口烟雾量。
相对于现有技术，本发明具有以下优点：
1、对于电子烟烟雾量的客观评价方法尚未见报道，本发明填补了电子烟烟雾量评价方面的空白。
2、目前，市面上销售的电子烟的烟雾量均是靠人的视觉感官来评价，会存在较大的人为差异，本发明为电子烟烟雾量提供了一种客观的定量评价方法，有利于规范电子烟的质量监控。
3、传统的光散射法在应用于电子烟烟雾量测定时，精度和重现性都很差；而本发明的方法，则能以很高的灵敏度、精度和重现性，应用于电子烟烟雾量测定。
具体实施方式
下面结合实施例对本发明作进一步的详细说明，但并不意为限制本发明。
实施例1-2
选取两种市售电子烟产品，代号分别为1和2。
使用吸烟循环模拟机(SCS)分别模拟抽吸电子烟1和电子烟 2，将产生的气溶胶烟雾分别通过DMS500快速粒径谱仪进行分析。首先设定好SCS和DMS500的仪器参数：SCS设定的抽吸容量为55mL、抽吸间隔时间为30s、采样头温度为320K，DMS设定的数据采集频率为10Hz、二级稀释倍数为300。当然，也可以采用其它适合工作的仪器参数。参数设定完成后抽吸电子烟，每个电子烟各抽吸10口。在线分别实时测定两种电子烟产生的烟雾中的气溶胶颗粒粒径分布和数目，并测定气溶胶流量C和检测时间t。测定完成后DMS500标准输出数据文件，通过Excel对数据进行查看并进行处理，分别获取以下指标：气溶胶颗粒物对应的各分级直径di、各分级直径di对应的气溶胶颗粒物的平均数浓度n、。然后按照公式：
烟雾量
Figure PCTCN2014090730-appb-000006
进行计算，依次得到每种电子烟每口的烟雾量。实验结果如表1所示。
表1两种电子烟的烟雾量数据
Figure PCTCN2014090730-appb-000007
Figure PCTCN2014090730-appb-000008
通过以上数据可以比较同一支电子烟每口烟雾量的差异，也可以比较不同支电子烟的烟雾量。从表1可以看出，1号电子烟的烟雾量要比2号电子烟的烟雾量稍大。

Claims (6)

  1. 一种评价电子烟烟雾量的方法，该方法包括以下步骤：
    (1)测定步骤：抽吸电子烟，测定产生的烟雾中的气溶胶颗粒粒径分布和数目；并测定气溶胶体积流量C和检测时间t；
    (2)数据处理：对直径范围为4～1000nm的气溶胶颗粒进行分级，划分出气溶胶颗粒各分级直径di，共分为38级，依次定义为d1～d38，数值分别为4.87、5.62、6.49、7.5、8.66、10、11.55、13.34、15.4、17.78、20.54、23.71、27.38、31.62、36.52、42.17、48.7、56.23、64.94、74.99、86.6、100、115.48、133.35、153.99、177.83、205.35、237.14、273.84、316.23、365.17、421.7、486.97、562.34、649.38、749.89、865.96、1000，单位为nm，并计算出各分级直径di对应的颗粒物平均数浓度n；所述分级直径di是指按照大小对气溶胶颗粒的直径进行分级时每一级气溶胶颗粒直径的平均值；
    (3)评价方法：假定电子烟烟雾中的气溶胶颗粒为球形且颗粒密度为标准密度ρ0，即水的密度：1.0g/cm3；
    按照如下公式计算烟雾量：
    烟雾量
    Figure PCTCN2014090730-appb-100001
    其中：上式中W为烟雾量，单位为g；di为气溶胶颗粒物对应的分级直径，共分为38级，单位为nm；ρ0为假定的颗粒标准密度：1.0g/cm3；n为各分级直径di对应的气溶胶颗粒物的平均数浓度，单位为个/cm3；C为气溶胶体积流量，单位为cm3/s；t0为检测起始时间，t1为检测终止时间，单位均为s。
  2. 根据权利要求1的方法，其中使用吸烟循环模拟机来抽吸所述 电子烟。
  3. 根据权利要求1的方法，其中使用快速粒径谱仪来在线实时测定产生的烟雾中的气溶胶颗粒粒径分布和数目，该快速粒径谱仪通过放电使气溶胶颗粒带电，并基于各气溶胶颗粒电迁移率的不同来测定气溶胶颗粒的粒径分布和数目。
  4. 根据权利要求1的方法，其中根据检测终止时间t1的不同，所述方法用于评价单口抽吸所产生的电子烟烟雾量，或者用于评价多口抽吸所产生的电子烟烟雾量的总和。
  5. 根据权利要求1的方法，其中所述电子烟采用电加热方式加热含有烟碱的液体介质来产生烟雾。
  6. 根据权利要求1的方法，其中使用快速粒径谱仪的分级器对气溶胶颗粒物的直径进行分级。
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