TY - JOUR T1 - Relationship between filter ventilation and Tar, Nicotine and CO emissions of cigarettes JF - European Respiratory Journal JO - Eur Respir J DO - 10.1183/13993003.congress-2021.PA3202 VL - 58 IS - suppl 65 SP - PA3202 AU - Efthimios Zervas AU - Emmanouil Konstantinidis AU - Niki Matsouki AU - Efi Drimili AU - Zoe Gareiou AU - Paraskevi Katsaounou Y1 - 2021/09/05 UR - http://erj.ersjournals.com/content/58/suppl_65/PA3202.abstract N2 - Introduction: Ventilation of cigarette filters is used to artificially reduce TNCO emissions. The scope of this work is to quantify the relationship between filter ventilation and TNCO emissions.Methods: The data published on the internet site of the French Agency ANSES, containing the characteristics of all cigarettes notified in the French market, are used. A model correlating filter ventilation with the emissions of TNCO is constructed.Results: Figure 1 shows the TNCO emissions versus ventilation and pressure drops (open/close vents). There is a decreased trend of TNCO emissions with filter ventilation but there is not any clear trend with close vents and open vents pressures.After analyzing figure 1, a function relating TNCO emissions with ventilation is constructed. This fuction gives very good results, as the estimated values are very close to the measured ones (r2=0.85), with ventilation measured values over 50% (figure 2). After several trials, no such relationship could be found for ventilation values <50%.Conclusions: A function relating quantitively the TNCO emissions of cigarettes and filter ventilation, for ventilation values>50%, is revealed.FootnotesCite this article as: European Respiratory Journal 2021; 58: Suppl. 65, PA3202.This abstract was presented at the 2021 ERS International Congress, in session “Prediction of exacerbations in patients with COPD”.This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only). ER -