CN113331464B - Method for reducing aldehyde compounds in electronic smoke sol - Google Patents
Method for reducing aldehyde compounds in electronic smoke sol Download PDFInfo
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- CN113331464B CN113331464B CN202110559935.3A CN202110559935A CN113331464B CN 113331464 B CN113331464 B CN 113331464B CN 202110559935 A CN202110559935 A CN 202110559935A CN 113331464 B CN113331464 B CN 113331464B
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- Prior art keywords
- aldehyde compounds
- electronic
- nicotine
- electronic smoke
- electronic cigarette
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Classifications
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/10—Chemical features of tobacco products or tobacco substitutes
- A24B15/16—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes
- A24B15/167—Chemical features of tobacco products or tobacco substitutes of tobacco substitutes in liquid or vaporisable form, e.g. liquid compositions for electronic cigarettes
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/24—Treatment of tobacco products or tobacco substitutes by extraction; Tobacco extracts
- A24B15/241—Extraction of specific substances
- A24B15/243—Nicotine
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B15/00—Chemical features or treatment of tobacco; Tobacco substitutes, e.g. in liquid form
- A24B15/18—Treatment of tobacco products or tobacco substitutes
- A24B15/28—Treatment of tobacco products or tobacco substitutes by chemical substances
- A24B15/30—Treatment of tobacco products or tobacco substitutes by chemical substances by organic substances
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to a method for reducing aldehyde compounds in electronic smoke sol, and belongs to the technical field of electronic cigarettes. The invention discloses a method for reducing aldehyde compounds in electronic smoke sol, which comprises the following steps: and adding an alkaline compound into the electronic cigarette liquid. According to the method for reducing the aldehyde compounds in the electronic smoke sol, the alkaline compound is added to improve the pH value of the electronic smoke liquid, so that the pyrolysis of propylene glycol and glycerol to generate aldehyde compounds such as formaldehyde, acetaldehyde and acrolein can be inhibited, and the aldehyde compound content in the electronic smoke sol is reduced, wherein the reduction rate of formaldehyde, acetaldehyde and acrolein can reach more than 20%.
Description
Technical Field
The invention relates to a method for reducing aldehyde compounds in electronic smoke sol, and belongs to the technical field of electronic cigarettes.
Background
An electronic cigarette is also called an electronic nicotine delivery system, and is a product for delivering nicotine and/or other substances to a respiratory system by atomizing electronic cigarette liquid through an atomizer. In recent years, electronic cigarettes have become a focus and growing hotspot of international tobacco interest.
The low molecular aldehyde compounds are harmful substances with strong stimulation effect on human sensory system and respiratory system, in particular formaldehyde, acetaldehyde, acetone, acrolein, o-methylbenzaldehyde and propionaldehyde; wherein formaldehyde and acetaldehyde are respectively listed as 1 and 2B cancerogenic substances by IARC, acrolein is listed as a 'harmful atmospheric pollutant list' by the U.S. environmental protection agency (U.S. EPA, U.S. Environmental Protection Agency), and laws and regulations and standards are issued in all main countries of the world to limit the amounts of formaldehyde, acetaldehyde and acrolein. Aldehyde compounds such as formaldehyde, acetaldehyde, acrolein and the like are main harmful components in the electronic smoke sol. The research on aldehyde compounds in aerosol is more, the detection rate is higher, and the health of human body is endangered.
Disclosure of Invention
The invention aims to provide a method for reducing aldehyde compounds in electronic smoke sol, which can obviously reduce the content of the aldehyde compounds in the electronic smoke sol.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
a method for reducing aldehyde compounds in an electronic smoke sol, comprising the following steps: and adding an alkaline compound into the electronic cigarette liquid.
The acidic environment can reduce the activation energy of aldehyde compounds generated by pyrolysis of propylene glycol and glycerol, catalyze the pyrolysis reaction of the propylene glycol and the glycerol, and the content of formaldehyde and acetaldehyde generated by the pyrolysis reaction increases along with the increase of the concentration of hydrogen ions. According to the method for reducing the aldehyde compounds in the electronic smoke sol, the alkaline compound is added to improve the pH value of the electronic smoke liquid, reduce the concentration of hydrogen ions, inhibit the pyrolysis of propylene glycol and glycerol to generate aldehyde compounds such as formaldehyde, acetaldehyde and acrolein, and further reduce the content of the aldehyde compounds in the electronic smoke sol, wherein the reduction rate of the formaldehyde, the acetaldehyde and the acrolein can reach more than 20%.
The method is suitable for various types of electronic cigarettes such as disposable electronic cigarettes, cigarette-type electronic cigarettes, liquid-continuous electronic cigarettes and the like. The alkaline compound can be added by a manufacturer in the production process of the electronic cigarette liquid, and can also be added by a consumer before smoking.
Preferably, the alkaline compound comprises one or any combination of nicotine, nicotine salts, sodium bicarbonate, potassium bicarbonate, diammonium phosphate.
The electronic cigarette liquid comprises propylene glycol, glycerol, ethanol, water, fragrance components and alkaline components.
Preferably, the alkaline compound contains one or both of nicotine and a nicotine salt.
Preferably, the alkaline compound is selected from one or two of nicotine and nicotine salts.
Preferably, the alkaline compound is added to the e-vaping solution to a pH of 6.5-12, e.g. a pH of 7, 7.5, 8.0, 8.5, 9.0, 9.5, 10, 10.5, 11 or 11.5. The nicotine salt is preferably a benzoate salt of nicotine.
Detailed Description
The technical scheme of the invention is further described below with reference to the specific embodiments.
Example 1
The method for reducing aldehyde compounds in the electronic smoke sol in the embodiment comprises the following steps: a certain amount of nicotine is added into the commercial electronic cigarette liquid, and the pH is adjusted to 7.77.
The commercial electronic cigarette liquid adopted in the embodiment has the pH value of 3.46 and comprises the main components of propylene glycol, glycerol, nicotine and water. The mass percent of glycerol in the tobacco juice is 48.6%, the mass percent of glycerol is 44%, the mass percent of nicotine is 0.5%, and the mass percent of water is 2%.
The commercial electronic cigarette liquid and the electronic cigarette liquid with the pH value adjusted are respectively added into the continuous liquid electronic cigarette, and the release amounts of formaldehyde, acetaldehyde and acrolein before and after nicotine addition are compared, so that the results are shown in Table 1.
TABLE 1 content (micrograms/50 mouth) of aldehyde compounds in commercial tobacco liquid aerosols and reduction rates
| pH | Formaldehyde | Acetaldehyde | Acrolein | |
| Front part | 3.46 | 16.32 | 8.05 | 8.55 |
| Rear part (S) | 7.77 | 12.24 | 5.06 | 5.75 |
| Rate of decrease | / | 24.99％ | 29.75％ | 21.02％ |
As can be seen from table 1: the release amount of formaldehyde, acetaldehyde and acrolein in the release material can be reduced by increasing the pH value of the electronic cigarette liquid by adding nicotine, and the reduction rates are 24.99%, 29.75% and 21.02% respectively.
Example 2
The method for reducing aldehyde compounds in the electronic smoke sol in the embodiment comprises the following steps: adding a certain amount of mixture of sodium bicarbonate and diammonium phosphate into the electronic cigarette liquid, and adjusting the pH to 8.59; in the mixture, the mass ratio of sodium bicarbonate to diammonium phosphate is 1:1.
The pH of the e-vaping liquid selected in this example was 4.60, including propylene glycol, glycerol, nicotine, water and other ingredients. In the smoke liquid, the mass percent of propylene glycol is 52.3%, the mass percent of glycerol is 30%, the mass percent of nicotine is 1.4%, the mass percent of water is 3.1%, and the balance is other components.
The electronic cigarette liquid without sodium bicarbonate and disodium hydrogen phosphate and the electronic cigarette liquid with the pH adjusted are respectively added into the same continuous liquid type electronic cigarette, and the release amounts of formaldehyde, acetaldehyde and acrolein before and after the sodium bicarbonate and the disodium hydrogen phosphate are compared, and the results are shown in Table 2.
TABLE 2 content of aldehyde Compounds (micrograms/50 mouth) in E-cigarette liquid aerosol before and after alkali addition and reduction Rate
| pH | Formaldehyde | Acetaldehyde | Acrolein | |
| Front part | 4.57 | 13.84 | 5.85 | 14.17 |
| Rear part (S) | 8.59 | 11.84 | 4.16 | 12.36 |
| Rate of decrease | / | 14.47％ | 28.86％ | 12.80％ |
As can be seen from table 2: the contents of formaldehyde, acetaldehyde and acrolein released by the electronic cigarette liquid after adding the alkaline substances are lower than those of the electronic cigarette liquid without adding the alkaline substances, and the reduction rates are 14.47%, 28.86% and 12.80% respectively.
Example 3
The method for reducing aldehyde compounds in the electronic smoke sol in the embodiment comprises the following steps: adding a certain amount of mixture of nicotine, nicotine salt, sodium bicarbonate and diammonium phosphate into the electronic cigarette liquid to adjust the pH to 7.77; the mass ratio of the nicotine, the nicotine salt, the sodium bicarbonate and the diammonium phosphate in the mixture is 2:2:1:1, and the adopted nicotine salt is nicotine benzoate.
The commercial electronic cigarette liquid adopted in the embodiment has the pH value of 3.46 and comprises the main components of propylene glycol, glycerol, nicotine and water. The mass percent of glycerol in the tobacco juice is 48.6%, the mass percent of glycerol is 44%, the mass percent of nicotine is 0.5%, and the mass percent of water is 2%.
The commercial electronic cigarette liquid and the electronic cigarette liquid with the pH adjusted are respectively added into the continuous electronic cigarette, and the release amounts of formaldehyde, acetaldehyde and acrolein before and after nicotine addition are compared, and the results are shown in Table 3.
TABLE 3 content of aldehydes in commercial tobacco liquid aerosols (micrograms/50 mouth) and reduction rate
| pH | Formaldehyde | Acetaldehyde | Acrolein | |
| Front part | 6.5 | 3.46 | 16.32 | 8.05 |
| Rear part (S) | 7.77 | 2.76 | 13.18 | 6.65 |
| Rate of decrease | / | 20.25％ | 19.21％ | 17.41％ |
As can be seen from table 3: the release amount of formaldehyde, acetaldehyde and acrolein in the release material can be reduced by increasing the pH value of the electronic cigarette liquid by adding nicotine, and the reduction rates are respectively 20.25%, 19.21% and 17.41%.
Claims (2)
1. A method for reducing aldehyde compounds in an electronic smoke sol is characterized by comprising the following steps of: the method comprises the following steps: and adding an alkaline compound into the electronic cigarette liquid until the pH value of the electronic cigarette liquid is 7.77-8.59, wherein the electronic cigarette liquid comprises propylene glycol, glycerol, ethanol, water, aroma components and alkaline components.
2. The method for reducing aldehyde compounds in an electronic aerosol according to claim 1, wherein: the alkaline compound comprises one or any combination of nicotine, nicotine salt, sodium bicarbonate, potassium bicarbonate and diammonium phosphate.
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| CN202110559935.3A CN113331464B (en) | 2021-05-21 | 2021-05-21 | Method for reducing aldehyde compounds in electronic smoke sol |
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| CN202110559935.3A CN113331464B (en) | 2021-05-21 | 2021-05-21 | Method for reducing aldehyde compounds in electronic smoke sol |
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| CN113331464A CN113331464A (en) | 2021-09-03 |
| CN113331464B true CN113331464B (en) | 2023-06-30 |
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Family Cites Families (12)
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| US2968306A (en) * | 1956-02-29 | 1961-01-17 | Eastman Kodak Co | Tobacco smoke filter capable of selective removal of aldehydes |
| DE2632693A1 (en) * | 1976-07-21 | 1978-02-02 | Bat Cigarettenfab Gmbh | TOBACCO WHICH IS LOW SMOKE IN CONDENSING COMPONENTS AND ALDEHYDE, AND METHOD FOR MANUFACTURING IT |
| CN104256888B (en) * | 2014-08-07 | 2016-06-22 | 江苏中烟工业有限责任公司 | A kind of heat-sensitive electronic tobacco juice and preparation thereof |
| CN104473322A (en) * | 2014-12-02 | 2015-04-01 | 河南中烟工业有限责任公司 | Electronic-cigarette liquid tobacco containing nicotine and organic acid |
| CN105361238A (en) * | 2015-12-16 | 2016-03-02 | 浙江中烟工业有限责任公司 | Electronic cigarette smoke solution containing pH conditioning agent and method for improving smoking feeling of electronic cigarette smoke solution |
| CN105341990A (en) * | 2015-12-16 | 2016-02-24 | 浙江中烟工业有限责任公司 | Electronic cigarette tobacco juice capable of improving physiological satisfaction of electronic cigarettes |
| CN110122919B (en) * | 2018-02-02 | 2023-04-21 | 10150703加拿大有限公司 | Nicotine ion pair formulations neutralized with carbon dioxide and methods thereof |
| CN110150760A (en) * | 2019-05-31 | 2019-08-23 | 钟术光 | A kind of aerosol generation system |
| CN110025057A (en) * | 2019-05-31 | 2019-07-19 | 钟术光 | A kind of method and device improving electronic cigarette safety |
| CN110447948A (en) * | 2019-08-20 | 2019-11-15 | 深圳多客技术有限公司 | The novel acid of electronic cigarette liquid, preparation method and preparation nicotine salt, electronic cigarette |
| CN110506978A (en) * | 2019-09-11 | 2019-11-29 | 深圳多客技术有限公司 | A kind of electronic cigarette oil solvent, electronic cigarette tobacco tar and preparation method comprising it |
| CN110558605B (en) * | 2019-09-27 | 2021-07-06 | 深圳雾芯科技有限公司 | Electronic cigarette liquid |
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