Abstract:Summaryα-Tocopherol, a type of vitamin E, has been known to be present in tobacco for many years. The compound is an antioxidant protecting cell membranes from oxidants. α-Tocopherol is transferred from tobacco into cigarette smoke, where it is also present. Analysis of α-tocopherol has been reported in a number of studies and in various matrices including tobacco and tobacco smoke. However, no recent publication describes a method for quantitative analysis of tocopherol in tobacco and in cigarette smoke, and … Show more
“…431.5 ÿ 415.3. The experimental conditions for the MS/MS detection were the same as described in reference (16). Quantitation has been performed using the same procedure as described in reference (16), using a set of 10 standards with concentrations between 98.63 µg/mL and 0.19 µg/mL for α-tocopherol and between 96.47 µg/mL and 0.19 µg/mL for α-tocopheryl acetate.…”
Section: Separation Detection and Quantitationmentioning
confidence: 99%
“…The combination of the two techniques offers both good reproducibility and selectivity of the analysis. A technique for the analysis of α-tocopherol or α-tocopheryl acetate in tobacco and cigarette smoke using both UV and MS/MS detection with the elimination of potential interferences was recently reported in the literature (16). This method has been applied on 37 e-liquids, three of them containing cannabidiol (CBD), and the rest only nicotine.…”
Summary
The presence of α-tocopheryl acetate in e-liquids is linked to EVALI (Electronic Cigarette, or Vaping, product use-Associated Lung Injuries). Typical e-liquids containing flavors and nicotine have a glycerin/propylene glycol carrier and are highly unlikely to contain α-tocopherol or α-tocopheryl acetate. However, the e-liquids containing cannabinoids, most notably tetrahydrocannabinol (THC), may contain α-tocopherol or α-tocopheryl acetate for enhancing the solubility of THC which is a lipophilic compound. For the analysis of α-tocopherol and of α-tocopheryl acetate in e-liquids a new HPLC technique was adopted which has been developed for the analysis of these compounds in tobacco and cigarette smoke and was previously reported. Both UV and MS/MS (MRM mode) were used as detection procedure.
Thirty four e-liquids containing different levels of nicotine were evaluated using this method. None of the e-liquids contained either α-tocopherol or α-tocopheryl acetate. Also, three e-liquids containing cannabidiol (CBD) were analyzed. Two of the CBD containing liquids did not contain α-tocopherol or α-tocopheryl acetate. However, one of these e-liquids did contain α-tocopherol, but the level was low at about 10 μg/g, which is lower than the level of α-tocopherol per smoke of one cigarette (ISO smoking), and significantly lower than the level of α-tocopherol in tobacco.
“…431.5 ÿ 415.3. The experimental conditions for the MS/MS detection were the same as described in reference (16). Quantitation has been performed using the same procedure as described in reference (16), using a set of 10 standards with concentrations between 98.63 µg/mL and 0.19 µg/mL for α-tocopherol and between 96.47 µg/mL and 0.19 µg/mL for α-tocopheryl acetate.…”
Section: Separation Detection and Quantitationmentioning
confidence: 99%
“…The combination of the two techniques offers both good reproducibility and selectivity of the analysis. A technique for the analysis of α-tocopherol or α-tocopheryl acetate in tobacco and cigarette smoke using both UV and MS/MS detection with the elimination of potential interferences was recently reported in the literature (16). This method has been applied on 37 e-liquids, three of them containing cannabidiol (CBD), and the rest only nicotine.…”
Summary
The presence of α-tocopheryl acetate in e-liquids is linked to EVALI (Electronic Cigarette, or Vaping, product use-Associated Lung Injuries). Typical e-liquids containing flavors and nicotine have a glycerin/propylene glycol carrier and are highly unlikely to contain α-tocopherol or α-tocopheryl acetate. However, the e-liquids containing cannabinoids, most notably tetrahydrocannabinol (THC), may contain α-tocopherol or α-tocopheryl acetate for enhancing the solubility of THC which is a lipophilic compound. For the analysis of α-tocopherol and of α-tocopheryl acetate in e-liquids a new HPLC technique was adopted which has been developed for the analysis of these compounds in tobacco and cigarette smoke and was previously reported. Both UV and MS/MS (MRM mode) were used as detection procedure.
Thirty four e-liquids containing different levels of nicotine were evaluated using this method. None of the e-liquids contained either α-tocopherol or α-tocopheryl acetate. Also, three e-liquids containing cannabidiol (CBD) were analyzed. Two of the CBD containing liquids did not contain α-tocopherol or α-tocopheryl acetate. However, one of these e-liquids did contain α-tocopherol, but the level was low at about 10 μg/g, which is lower than the level of α-tocopherol per smoke of one cigarette (ISO smoking), and significantly lower than the level of α-tocopherol in tobacco.
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