TY - JOUR T1 - Secondhand exposure to aerosol from electronic cigarettes: pilot study of assessment of tobacco-specific nitrosamine (NNAL) in urine JO - Gaceta Sanitaria T2 - AU - Martínez-Sánchez,Jose M. AU - Ballbè,Montse AU - Pérez-Ortuño,Raúl AU - Fu,Marcela AU - Sureda,Xisca AU - Pascual,José A. AU - Peruga,Armando AU - Fernández,Esteve SN - 02139111 M3 - 10.1016/j.gaceta.2018.07.016 DO - 10.1016/j.gaceta.2018.07.016 UR - https://gacetasanitaria.org/es-secondhand-exposure-aerosol-from-electronic-articulo-S0213911118302188 AB - ObjectiveTo assess the levels of a tobacco-specific nitrosamine (NNAL) in non-smokers passively exposed to the second-hand aerosol (SHA) emitted from users of electronic cigarettes (e-cigarettes). MethodWe conducted an observational study involving 55 non-smoking volunteers divided into three groups: 25 living at home with conventional smokers, 6 living with e-cigarette users, and 24 in control homes (smoke-free homes). We obtained urine samples from all volunteers to determine NNAL. ResultsWe detected NNAL in the urine of volunteers exposed to e-cigarettes (median:0.55 pg/mL; interquartile range: 0.26-2.94 pg/mL). The percentage of urine samples with quantifiable NNAL differed significantly among the three groups of homes: 29.2%, 66.7% and 76.0%, respectively (p=0.004). ConclusionsWe found NNAL nitrosamine in urine samples from people exposed to SHA from e-cigarettes. However, these results could be confirmed with more studies with larger sample sizes. ER -