Martínez Sánchez, Jose M.Ballbè i Gibernau, MontsePérez Ortuño, RaúlFu Balboa, MarcelaSureda, XiscaPascual, José AntonioPeruga, ArmandoFernández Muñoz, Esteve2021-02-192021-02-192019-11-010213-9111https://hdl.handle.net/2445/174098Objective: to 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). Method: we 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. Results: we 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). Conclusions: we 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.4 p.application/pdfengcc-by-nc-nd (c) Sociedad Española de Salud Pública y Administración Sanitaria (SESPAS), 2019http://creativecommons.org/licenses/by-nc-nd/3.0/esCigarretes electròniquesMarcadors bioquímicsNitrosaminesElectronic cigarettesBiochemical markersNitrosoaminesinfo:eu-repo/semantics/article6893062021-02-19info:eu-repo/semantics/openAccess