{"id":43861,"date":"2024-01-12T10:35:47","date_gmt":"2024-01-12T02:35:47","guid":{"rendered":"https:\/\/www.abesmoke.com\/?p=43861"},"modified":"2024-01-12T12:01:39","modified_gmt":"2024-01-12T04:01:39","slug":"2f61786bf2","status":"publish","type":"post","link":"https:\/\/www.abesmoke.com\/en\/a\/43861","title":{"rendered":"\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5"},"content":{"rendered":"
\n

\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5\u00a0 \u00a0 \u00a0<\/span><\/p>\n

Visual Perception of Electronic Cigarette Smoke and Particle Size Testing Methods<\/p>\n

\u672c\u6587\u8ba8\u8bba\u4e86\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5\u3002\u89c6\u89c9\u4e0a\uff0c\u7535\u5b50\u70df\u70df\u96fe\u7684\u989c\u8272\u548c\u6210\u56e2\u6027\u5f71\u54cd\u7528\u6237\u7684\u89c6\u89c9\u4f53\u9a8c\uff0c\u5176\u80cc\u540e\u7684\u7269\u7406\u539f\u7406\u5206\u522b\u662f\u745e\u5229\u6563\u5c04\u548c\u7c73\u6c0f\u6563\u5c04\u3002\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u6c14\u6eb6\u80f6\u7684\u7c92\u5f84\u5927\u5c0f\u6709\u5173\uff0c\u7c92\u5f84\u5c0f\u5219\u5448\u73b0\u84dd\u8272\uff0c\u7c92\u5f84\u5927\u5219\u5448\u73b0\u767d\u8272\u3002\u7c92\u5f84\u7684\u6d4b\u8bd5\u65b9\u6cd5\u4e3b\u8981\u6709\u6fc0\u5149\u7c92\u5ea6\u4eea\u548c\u626b\u63cf\u7535\u8fc1\u79fb\u7387\u7c92\u5f84\u8c31\u4eea\uff0c\u5404\u6709\u4f18\u7f3a\u70b9\uff0c\u7814\u7a76\u4eba\u5458\u53ef\u6839\u636e\u9700\u8981\u9009\u62e9\u5408\u9002\u7684\u6d4b\u8bd5\u65b9\u6cd5\u3002\u5f53\u524d\u7535\u5b50\u70df\u6c14\u6eb6\u80f6\u6d4b\u8bd5\u9762\u4e34\u7684\u4e3b\u8981\u95ee\u9898\u662f\u7c92\u5f84\u5931\u771f\uff0c\u8fd9\u4e0e\u6c14\u6eb6\u80f6\u6210\u5206\u7684\u6355\u6349\u56f0\u96be\u548c\u5b9e\u9a8c\u73af\u5883\u6761\u4ef6\u7684\u4e0d\u7a33\u5b9a\u6709\u5173\u3002<\/p>\n

This article discusses the visual perception of electronic cigarette smoke and methods for measuring particle size. Visually, the color and clustering of the smoke affect the user's visual experience, which is based on the physical principles of Rayleigh scattering and Mie scattering. The visual perception of the smoke is related to the size of aerosol particles; smaller particles appear blue, while larger particles appear white. The main methods for particle size testing are the laser diffraction particle size analyzer and the scanning mobility particle size spectrometer, each with its advantages and disadvantages. Researchers can choose the appropriate method based on their needs. The main issue currently faced in the testing of electronic cigarette aerosols is particle size distortion, which is related to the difficulty in capturing certain key components of the aerosols and the instability of experimental environmental<\/p>\n

\u7528\u6237\u5728\u4f7f\u7528\u7535\u5b50\u70df\u65f6\uff0c\u975e\u5e38\u5173\u6ce8\u201c\u70df\u96fe\u91cf\u201d\u7684\u591a\u5c11\uff0c\u65e2\u8981\u83b7\u5f97\u89c6\u89c9\u4e0a\u6ee1\u8db3\uff0c\u53c8\u8981\u5f97\u5230\u5b9e\u9645\u62bd\u5438\u65f6\u7684\u6ee1\u8db3\uff0c\u90a3\u4e48\u89c6\u89c9\u548c\u5b9e\u9645\u201c\u70df\u96fe\u91cf\u201d\u5230\u5e95\u6709\u4ec0\u4e48\u533a\u522b\uff0c\u53c8\u5bf9\u5e94\u7740\u54ea\u4e9b\u4e0d\u540c\u7684\u7814\u7a76\u65b9\u6cd5\u5462\uff1f<\/span><\/p>\n

\u00a0 \u00a0 \u00a0\u8c08\u5230\u5b9e\u9645\u201c\u70df\u96fe\u91cf\u201d\uff0c\u4e0d\u5f97\u4e0d\u63d0\u4e00\u4e2a\u5173\u952e\u6307\u6807\u2014TPM\uff08Total Particulate Matter\uff0c\u6307\u70df\u6c14\u4e2d\u9897\u7c92\u7269\u603b\u542b\u91cf\uff09\uff0c\u9488\u5bf9TPM\u7684\u901a\u7528\u68c0\u6d4b\u65b9\u6cd5\u5c31\u662f\"\u5931\u91cd\u6cd5\"\uff0c\u6d4b\u8bd5\u62bd\u5438\u524d\u540e\u8bbe\u5907\u7684\u8d28\u91cf\u5dee\uff0c\u4f5c\u4e3a\u8be5\u8bbe\u5907\u7684TPM\u503c\u3002TPM\u53d7\u8bbe\u5907\u96fe\u5316\u6548\u7387\u7684\u5f71\u54cd\uff0c\u5177\u4f53\u5f71\u54cd\u673a\u5236\u89c1<\/span>Exploring the Working Principle of Vapor-Type Electronic Cigarettes<\/span><\/a>\uff0c\u540c\u65f6TPM\u5bf9\u62bd\u5438\u65f6\u7684\u53e3\u611f\u5f71\u54cd\u5de8\u5927\uff0c\u5f71\u54cd\u673a\u5236\u8bf7\u53c2\u8003<\/span>Secrets of Electronic Cigarette Flavor: The Aerosol Chapter (Part Three): Movement, Deposition Characteristics of Aerosols and Sensory Experience<\/span><\/a>\u3002<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 \u00a0\u672c\u671f\u4e3b\u8981\u9488\u5bf9\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5\u5c55\u5f00\u8ba8\u8bba\u3002<\/span><\/p>\n

\n

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\uff081\uff09\u6c14\u6eb6\u80f6\u89c6\u89c9\u611f\u53d7<\/strong><\/span><\/p>\n

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\u56fe1\u00a0\u84dd\u8272\u70df\u96fe<\/p>\n

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\u56fe2\u00a0\u767d\u8272\u70df\u96fe<\/p>\n

1 \u84dd\u8272\u70df\u96fe\u7684\u6210\u56e0<\/p>\n

\u745e\u5229\u6563\u5c04<\/span><\/strong>\uff1a<\/span>\u6563\u5c04\u5f3a\u5ea6\u4e0e\u5149\u7ebf\u6ce2\u957f\u7684\u56db\u6b21\u65b9\u6210\u53cd\u6bd4 \uff0c\u6ce2\u957f\u8d8a\u77ed\uff0c\u6563\u5c04\u8d8a\u5f3a\u3002\u901a\u4fd7\u6765\u8bb2<\/span>\u7c92\u5b50\u7684\u76f4\u5f84\u8fdc\u5c0f\u4e8e\u5165\u5c04\u6ce2\u7684\u6ce2\u957f\uff0c\u4e0a\u754c\u5927\u7ea6\u662f\u6ce2\u957f\u76841\/10\uff081-300 nm\uff09\uff0c\u800c<\/span>\u77ed\u6ce2\u4e2d\u53c8\u4ee5\u84dd\u5149\u80fd\u91cf\u6700\u5927\uff0c\u56e0\u6b64\u89c6\u89c9\u4e0a\u70df\u6c14\u4f1a\u5448\u84dd\u8272\uff0c\u9897\u7c92\u7c92\u5f84\u8d8a\u5c0f\uff0c\u84dd\u8272\u8d8a\u660e\u663e\u3002<\/strong><\/span><\/p>\n

2<\/span>\u00a0\u767d\u8272\u70df\u96fe\u7684\u6210\u56e0<\/span><\/span><\/p>\n

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\"\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5\"<\/p>\n

\u56fe3 \u6c14\u6eb6\u80f6\u5206\u7ea7\u548c\u5206\u6790\u8bbe\u5907\uff08Pui: 1996\uff09<\/p>\n

\"\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5\"<\/p>\n

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\u76ee\u524d\u7535\u5b50\u70df\u884c\u4e1a\u91c7\u75282\u79cd\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5<\/p>\n

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2 \u626b\u63cf\u7535\u8fc1\u79fb\u7387\u7c92\u5f84\u8c31\u4eea\uff1a\u5229\u7528\u4e0d\u540c\u5c3a\u5bf8\u7684\u7c92\u5b50\u5728\u7535\u573a\u4e2d\u7684\u8fc1\u79fb\u80fd\u529b\u4e0d\u540c\u8fd9\u4e00\u539f\u7406\uff0c\u5b9e\u73b0\u7c92\u5f84\u6d4b\u8bd5\uff0c\u6d4b\u91cf\u51c6\u786e\u5ea6\u9ad8\uff0c\u4f46\u662f\u53ea\u80fd\u6d4b\u8bd5<\/span>1\u03bcm\u4ee5\u4e0b<\/strong>\u7684\u8d85\u7ec6\u9897\u7c92\u3002
\n<\/span><\/p>\n

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\n

\u00a0 \u00a0<\/span><\/p>\n

When using electronic cigarettes, users pay close attention to the amount of \"smoke\" produced, seeking both visual satisfaction and a satisfying actual inhalation experience. So, what is the difference between visual and actual \"smoke\" volume, and what different research methods correspond to them?<\/p>\n

Talking about the actual \"smoke\" volume, we must mention a key indicator\u2014TPM (Total Particulate Matter), which refers to the total content of particulate matter in the smoke. The universal testing method for TPM is the \"gravimetric method,\" which tests the mass difference of the device before and after inhalation as the TPM value of the device. TPM is influenced by the atomization efficiency of the device, for which the specific influence mechanism is discussed in the exploration of the working principles of vapor-type electronic cigarettes. TPM also has a significant impact on the mouthfeel during inhalation, with the influence mechanism detailed in \"Secrets of Electronic Cigarette Flavor: The Aerosol Chapter (Part Three): Movement, Deposition Characteristics of Aerosols and Sensory Experience.\"<\/p>\n

This issue mainly focuses on the visual perception and particle size testing methods of electronic cigarette smoke.<\/p>\n

Electronic Cigarette Smoke Visual Experience and Particle Size Testing Methods<\/p>\n

(1) Aerosol Visual Perception<\/p>\n

First, let's list two visual representations of electronic cigarette smoke: 1) When we blow from the bottom of the electronic cigarette or gently inhale, the smoke color is lighter, even blue, providing a poor visual experience, as shown in Figure 1; 2) When we exhale the smoke after a complete inhalation, the smoke is better clustered and generally white, providing a good visual experience, as shown in Figure 2. What are the reasons for the different colors, blue or white, presented by different smokes?<\/p>\n

Figure 1 Blue Smoke<\/p>\n

Figure 2 White Smoke<\/p>\n

1 Cause of Blue Smoke<\/p>\n

Rayleigh Scattering: The scattering intensity is inversely proportional to the fourth power of the wavelength of light; the shorter the wavelength, the stronger the scattering. Simply put, the diameter of the particles is much smaller than the wavelength of the incident wave, with the upper limit being about 1\/10 of the wavelength (1-300 nm). Among short waves, blue light has the most energy, so visually, the smoke appears blue. The smaller the particle size, the more apparent the blue color.<\/p>\n

2 Cause of White Smoke<\/p>\n

Mie Scattering: Scattering that occurs when the diameter of particles in the atmosphere is comparable to the wavelength of radiation, the scattering intensity is directly proportional to the square of the frequency. When the particle size is larger than the wavelength of visible light (0.38~0.78\u03bcm), the intensity of scattering is independent of the wavelength, so the smoke visually appears white. The larger the particle size, the more apparent the white color.<\/p>\n

(2) Electronic Cigarette Aerosol Particle Size Testing Methods<\/p>\n

Two commonly used aerosol measurement methods are collection and analysis, and direct-reading sensors. There is no strict distinction between the two methods; the former can perform complete concentration measurements, qualitatively and quantitatively measure aerosols, but takes a longer time; the latter can provide near-real-time particle size distribution information, but is more expensive. Figure 3 shows the particle size range of several common types of instruments, and Figure 4 shows the application flowchart for some instruments.<\/p>\n

Figure 3 Aerosol Grading and Analysis Equipment (Pui: 1996)<\/p>\n

Figure 4 Flowchart for Selecting Aerosol Particle Analysis Direct-Reading Instruments (Pui: 1996)<\/p>\n

Currently, the electronic cigarette industry uses two particle size testing methods:<\/p>\n

1 Laser Particle Size Analyzer: Measures particle size and distribution based on the principle of light scattering. The particle size testing range is wide, but due to the mutual influence between particles, the accuracy is slightly poor.<\/p>\n

2 Scanning Mobility Particle Size Spectrometer: Uses the principle that particles of different sizes have different migration abilities in an electric field to achieve particle size testing. It has high measurement accuracy but can only test ultrafine particles below 1\u03bcm.<\/p>\n

Both measurement methods have their advantages and disadvantages, and researchers can choose according to their needs. The main problem currently faced in electronic cigarette aerosol testing is particle size distortion, due in part to the difficulty of capturing and collecting certain key components of the aerosols, and also to the inability to ensure the stability of aerosols under experimental conditions, such as condensation caused by temperature changes during aerosol transport, and the collision and agglomeration of different particles.<\/p>\n

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\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5\u00a0 \u00a0 \u00a0 Visual Perception of Electronic Cigarette Smoke and Particle Size Testing Methods \u672c\u6587\u8ba8\u8bba\u4e86\u7535\u5b50\u70df\u70df\u96fe\u7684\u89c6\u89c9\u611f\u53d7\u4e0e\u7c92\u5f84\u6d4b\u8bd5\u65b9\u6cd5\u3002\u89c6\u89c9\u4e0a\uff0c\u7535\u5b50\u70df\u70df\u96fe\u7684\u989c …<\/p>","protected":false},"author":2,"featured_media":43862,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[3],"tags":[],"class_list":["post-43861","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-t"],"jetpack_publicize_connections":[],"_links":{"self":[{"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/posts\/43861","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/comments?post=43861"}],"version-history":[{"count":0,"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/posts\/43861\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/media\/43862"}],"wp:attachment":[{"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/media?parent=43861"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/categories?post=43861"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.abesmoke.com\/en\/wp-json\/wp\/v2\/tags?post=43861"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}