Secondhand smoke levels in public building main entrances: outdoor and indoor PM2.5 assessment
Por:
Sureda, X, Martinez-Sanchez, JM, Lopez, MJ, Fu, M, Aguero, F, Salto, E, Nebot, M, Fernandez, E
Publicada:
1 nov 2012
Resumen:
Background/Objectives To describe secondhand smoke (SHS) levels in halls and main entrances (outdoors) in different buildings by measurement of PM2.5 and airborne nicotine.
Methods Cross-sectional study in a sample of 47 public buildings. The authors studied SHS levels derived from PM2.5 (micrograms per cubic metre) using TSI SidePak Personal Aerosol Monitors. The authors tested four locations within buildings: hall, main entrance (outdoor), control (indoor) and control (outdoor). The authors also measured airborne nicotine concentration (micrograms per cubic metre) in main entrances (outdoor). The authors computed medians and IQRs to describe the data. Spearman correlation coefficient (rsp) was used to explore the association between PM2.5 concentrations simultaneously measured in halls and main entrances as well as between PM2.5 and nicotine concentrations.
Results The authors obtained an overall median PM2.5 concentration of hall 18.20 mg/m(3) (IQR: 10.92-23.92 mu g/m(3)), main entrance (outdoor) 17.16 mu g/m(3) (IQR: 10.92-24.96 mu g/m(3)), control (indoor) 10.40 mu g/m(3) (IQR: 6.76-15.60 mu g/m(3)) and control (outdoor) 13.00 mu g/m(3) (IQR: 8.32-18.72 mu g/m(3)). The PM2.5 concentration in halls was more correlated with concentration in the main entrances (outdoors) (rsp=0.518, 95% CI 0.271 to 0.701) than with the control indoor (rsp=0.316, 95% CI 0.032 to 0.553). The Spearman correlation coefficient between nicotine and PM2.5 concentration was 0.365 (95% CI -0.009 to 0.650).
Conclusions Indoor locations where smoking is banned are not completely free from SHS with levels similar to those obtained in the immediate entrances (outdoors) where smoking is allowed, indicating that SHS from outdoors settings drifts to adjacent indoors. These results warrant a revision of current smoke-free policies in particular outdoor settings.
Filiaciones:
Sureda, X:
Inst Catala Oncol, Tobacco Control Res Unit, Canc Prevent & Control Programme, Barcelona 08908, Spain
IDIBELL, Canc Prevent & Control Grp, Barcelona, Spain
Univ Barcelona, Dept Clin Sci, Barcelona, Spain
Martinez-Sanchez, JM:
Inst Catala Oncol, Tobacco Control Res Unit, Canc Prevent & Control Programme, Barcelona 08908, Spain
IDIBELL, Canc Prevent & Control Grp, Barcelona, Spain
Univ Barcelona, Dept Clin Sci, Barcelona, Spain
Lopez, MJ:
Agencia Salut Publ Barcelona, Barcelona, Spain
CIBER Epidemiol & Salud Publ, Barcelona, Spain
Fu, M:
Inst Catala Oncol, Tobacco Control Res Unit, Canc Prevent & Control Programme, Barcelona 08908, Spain
IDIBELL, Canc Prevent & Control Grp, Barcelona, Spain
Univ Barcelona, Dept Clin Sci, Barcelona, Spain
Aguero, F:
Agencia Salut Publ Barcelona, Barcelona, Spain
IMAS UPF ASPB, Unitat Docent Med Prevent & Salut Publ, Barcelona, Spain
Salto, E:
Dept Hlth Generalitat Catalunya, Barcelona, Spain
Univ Barcelona, Sch Pharm, Dept Publ Hlth, Barcelona, Spain
Nebot, M:
Agencia Salut Publ Barcelona, Barcelona, Spain
CIBER Epidemiol & Salud Publ, Barcelona, Spain
Univ Pompeu Fabra, Dept Expt Sci & Hlth, Barcelona, Spain
Fernandez, E:
Inst Catala Oncol, Tobacco Control Res Unit, Canc Prevent & Control Programme, Barcelona 08908, Spain
IDIBELL, Canc Prevent & Control Grp, Barcelona, Spain
Univ Barcelona, Dept Clin Sci, Barcelona, Spain
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