Nicotine dosimetry and stability in Cambridge Filter PADs (CFPs) following different smoking regimen protocols and condition storage

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Acknowledging CoEHAR in your work

If CoEHAR training and education, events, resources, equipment or staff have helped your project, we appreciate an acknowledgement in your papers, articles, presentations, posters, blog post with a citation and/ or link. It helps us to spread the word about our services and demonstrate our ongoing value to our Funders.

If you wish to cite CoEHAR in a research paper or presentation, use the following sample text:

We wish to thank the Center of Excellence for the Acceleration of Harm Reduction (CoEHAR, University of Catania, Italy- COE01-05) for assisting our project with the resources provided.

Pietro Zuccarello, Sonja Rust, Massimo Caruso, Rosalia Emma, Roberta Pulvirenti, Claudia Favara, Riccardo Polosa, Giovanni Li Volti, Margherita Ferrante


Despite the growing numbers of studies on cigarettes and electronic nicotine delivery products (ENDs), no standard assessment of nicotine stability in various matrix post exposure is currently available. The aim of the present study was to evaluate the optimal standard condition to store Cambridge Filter Pads (CFPs) before chemical analysis in order to guarantee the titer of nicotine.We further performed data normalization according to different smoking or vaping runs. Smoke and vapor generated respectively by a reference tobacco cigarette (1R6F) and ENDs under different exposure regimes (ISO, HCI and CRM81) were collected on CFPs as total particulate matter (TPM) and subsequently analyzed for nicotine content. For each exposure, some CFPs were analyzed at time zero, whereas the others were stored under different conditions for nicotine assessment after 30 days. Principal Component Analysis (PCA) showed the best correlation between nicotine on CFPs and TPM for normalization. This study suggests that different exposure regimes and products can affect the preservation of nicotine titer on CFPs while samples storage at −80 °C may prevent the loss of nicotine. Finally, normalization of nicotine with TPM is strongly recommended for regulatory purpose.