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It is worth noting that Esteve Fernández' paper "Cigarettes vs. e-cigarettes:Passive exposure at home measured by means of airborne marker and biomarkers," measured the indoor airborne concentration of nicotine using a method that is designed to collect nicotine in the gas phase and NOT the particulate phase.
While nicotine that is emitted into the indoor air from conventional cigarettes, has been determined to reside primarily in the gas phase, nicotine emitted by e-cigarettes is expected to reside primarily in the particulate phase. Thus, the indoor air concentrations of nicotine in the homes with e-cigarettes users is likely to be substantially underestimated in this paper. This is also true for the indoor air nicotine concentrations from e-cigarettes that is reported in the Czogala (2013) paper, which also used a method that is designed to collect nicotine in the gas phase NOT the particulate phase. I raised this issue in a paper delivered in Hong Kong this summer and for which ASHRAE published the following Journal article "The Hazards of E-Cigarettes"" title="";
To better understand the total amount of nicotine emitted into indoor air from e-cigarettes (gas and particulate phase), we have developed a method to simultaneously collect nicotine in both the gas and particulate phases and currently are seeking funding to conduct precision and accuracy tests of this new method.
Bud Offermann PE CIH
Indoor Environmental Engineering
1448 Pine Street, Suite 103
San Francisco, CA 94109
E-mail: mailto:[email protected]";
Web Site:" title="";

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