E-cigs are increasingly popular. At first, we were not sure if electronic cigarettes even contained nicotine. That is not the case anymore, since we know that they do contain nicotine. Now, we want to know more about the smoke that is inhaled from these cigarettes.There are many factors determining how much nicotine one of these smokers inhales.
The aerosol resulted from heating a solution containing nicotine is what an electronic cigarette smoker inhales. Not much is known about a user's puffing behavior nor the amount of nicotine that the mouthpiece allows one to inhale.
According to a study by the Center for the Study of Tobacco Products in the Department of Psychology at Virginia Commonwealth University and the American University of Beirut, the extent to which a mouthpiece influences nicotine delivery and subjective effects in ECIG users is unknown.
A new term has been created to determine the amount of nicotine inhaled and that term is "puff topography".
Depending on puff conditions and product features, 15 puffs from an ECIG can provide far less or far more nicotine than a single tobacco cigarette.
The Onassis Cardiac Surgery Center at Kallithea, Greece sees things a bit differently. Their study uses four-second puffs with 20-30 s interpuff interval, which they say should be used when assessing electronic cigarette effects in laboratory experiments, provided that the equipment used does not get overheated. Based on the characteristics of the device used in this study, a 20 mg/mL nicotine concentration liquid would be needed in order to deliver nicotine at amounts similar to the maximum allowable content of one tobacco cigarette.
It all depends on puff conditions and product features.
Depending on puff conditions and product features, 15 puffs from an ECIG can provide far less or far more nicotine than a single tobacco cigarette. That makes a whole lot of sense. That statement doesn't really mean anything. The Food and Drug Administration has provided a document for reference purposes on two e-cig products, Njoy e-cigarette with various cartridges and Smoking Everywhere Electronic Cigarette also with various cartridges. http://www.fda.gov/downloads/drugs/Scienceresearch/UCM173250.pdf
In this document, levels found were consistent with the labeling (low, medium and high); however, the cartridge labeled “no” still delivered some nicotine. The cartridges labeled “high” delivered more nicotine than the approved Nicotrol product. Repeat testing of 3 different cartridges with the same label (menthol high) gave varying results from 26.8 to 43.2 mcg nicotine/100 mL puff.
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